Share and Explore the Tech Inside You!!!
Menu

MapYourTech.com

Optical Standards

 

https://www.itu.int/en/ITU-T/techwatch/Pages/optical-standards.aspx

https://en.wikipedia.org/wiki/ITU-T

ITU-T Handbook

ITU-T Study Group 15 - Networks, Technologies and Infrastructures for Transport, Access and Home

ITU-T Video Tutorial on Optical Fibre Cables and Systems

 

Recommendations for which ITU-T test specifications are available
ITU-T Recommendations specifying test procedures are available for the following Recommendations:

 

Optical fibre cables:

  • G.652 (2009-11) Characteristics of a single-mode optical fibre and cable
  • G.653 (2010-07) Characteristics of a dispertion-shifted, single-mode optical fibre and cable
  • G.654 (2010-07) Characteristics of a cut-off shifted, single-mode optical fibre and cable
  • G.655 (2009-11) Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable
  • G.656 (2010-07) Characteristics of a fibre and cable with non-zero dispersion for wideband optical transport
  • G.657 (2009-11) Characteristics of a bending-loss insensitive single-mode optical fibre and cable for the access network

Characteristics of optical components and subsystems:

  • G.662 (2005-07) Generic characteristics of optical amplifier devices and subsystems
  • G.663 (2011-04) Application related aspects of optical amplifier devices and subsystems
  • G.664 (2006-03) Optical safety procedures and requirements for optical transport systems
  • G.665 (2005-01) Generic characteristics of Raman amplifiers and Raman amplified systems
  • G.666 (2011-02) Characteristics of PMD compensators and PMD compensating receivers
  • G.667 (2006-12) Characteristics of adaptive chromatic dispersion compensators

Optical fibre submarine cable systems:

  • G.973 (2010-07) Characteristics of repeaterless optical fibre submarine cable systems
  • G.974 (2007-07) Characteristics of regenerative optical fibre submarine cable systems
  • G.975.1 (2004-02) Forward error correction for high bit-rate DWDM submarine systems
  • G.977 (2011-04) Characteristics of optically amplified optical fibre submarine cable systems
  • G.978 (2010-07) Characteristics of optical fibre submarine cables

 

ITU-T Recommendations by series

Skip Navigation Links.
Collapse <b>G series</b>: Transmission systems and media, digital systems and networksG series: Transmission systems and media, digital systems and networks
 
  
 
Collapse <b>G.600-G.699</b>: Transmission media and optical systems characteristicsG.600-G.699: Transmission media and optical systems characteristics
 
 
Collapse <b>G.600-G.609</b>: GeneralG.600-G.609: General
 
 
 
G.601Terminology for cables
 
 
 
G.602Reliability and availability of analogue cable transmission systems and associated equipments
 
 
Collapse <b>G.610-G.619</b>: Symmetric cable pairsG.610-G.619: Symmetric cable pairs
 
 
 
G.611Characteristics of symmetric cable pairs for analogue transmission
 
 
 
G.612Characteristics of symmetric cable pairs designed for the transmission of systems with bit rates of the order of 6 to 34 Mbit/s
 
 
 
G.613Characteristics of symmetric cable pairs usable wholly for the transmission of digital systems with a bit rate of up to 2 Mbit/s
 
 
 
G.614Characteristics of symmetric pair star-quad cables designed earlier for analogue transmission systems and being used now for digital system transmission at bit rates of 6 to 34 Mbit/s
 
 
Collapse <b>G.620-G.629</b>: Land coaxial cable pairsG.620-G.629: Land coaxial cable pairs
 
 
 
G.621Characteristics of 0.7/2.9 mm coaxial cable pairs
 
 
 
G.622Characteristics of 1.2/4.4 mm coaxial cable pairs
 
 
 
G.623Characteristics of 2.6/9.5 mm coaxial cable pairs
 
 
Collapse <b>G.630-G.639</b>: Submarine cablesG.630-G.639: Submarine cables
 
 
 
G.631Types of submarine cable to be used for systems with line frequencies of less than about 45 MHz
 
 
Collapse <b>G.640-G.649</b>: Free space optical systemsG.640-G.649: Free space optical systems
 
 
 
G.640Co-location longitudinally compatible interfaces for free space optical systems
 
 
Collapse <b>G.650-G.659</b>: Optical fibre cablesG.650-G.659: Optical fibre cables
 
 
 
G.650.1Definitions and test methods for linear, deterministic attributes of single-mode fibre and cable
 
 
 
G.650.2Definitions and test methods for statistical and non-linear related attributes of single-mode fibre and cable
 
 
 
G.650.3Test methods for installed single-mode optical fibre cable links
 
 
 
G.651.1Characteristics of a 50/125 µm multimode graded index optical fibre cable for the optical access network
 
 
 
G.652Characteristics of a single-mode optical fibre and cable
 
 
 
G.653Characteristics of a dispersion-shifted, single-mode optical fibre and cable
 
 
 
G.654Characteristics of a cut-off shifted single-mode optical fibre and cable
 
 
 
G.655Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable
 
 
 
G.656Characteristics of a fibre and cable with non-zero dispersion for wideband optical transport
 
 
 
G.657Characteristics of a bending-loss insensitive single-mode optical fibre and cable
 
 
Collapse <b>G.660-G.679</b>: Characteristics of optical components and subsystemsG.660-G.679: Characteristics of optical components and subsystems
 
 
 
G.661Definitions and test methods for the relevant generic parameters of optical amplifier devices and subsystems
 
 
 
G.662Generic characteristics of optical amplifier devices and subsystems
 
 
 
G.663Application-related aspects of optical amplifier devices and subsystems
 
 
 
G.664Optical safety procedures and requirements for optical transmission systems
 
 
 
G.665Generic characteristics of Raman amplifiers and Raman amplified subsystems
 
 
 
G.666Characteristics of polarization mode dispersion compensators and of receivers that compensate for polarization mode dispersion
 
 
 
G.667Characteristics of adaptive chromatic dispersion compensators
 
 
 
G.671Transmission characteristics of optical components and subsystems
 
 
 
G.672Characteristics of multi-degree reconfigurable optical add/drop multiplexers
 
 
Collapse <b>G.680-G.699</b>: Characteristics of optical systemsG.680-G.699: Characteristics of optical systems
 
 
 
G.680Physical transfer functions of optical network elements
 
 
 
G.691Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers
 
 
 
G.692Optical interfaces for multichannel systems with optical amplifiers
 
 
 
G.693Optical interfaces for intra-office systems
 
 
 
G.694.1Spectral grids for WDM applications: DWDM frequency grid
 
 
 
G.694.2Spectral grids for WDM applications: CWDM wavelength grid
 
 
 
G.695Optical interfaces for coarse wavelength division multiplexing applications
 
 
 
G.696.1Longitudinally compatible intra-domain DWDM applications
 
 
 
G.697Optical monitoring for dense wavelength division multiplexing systems
 
 
 
G.698.1Multichannel DWDM applications with single-channel optical interfaces
 
 
 
G.698.2Amplified multichannel dense wavelength division multiplexing applications with single channel optical interfaces
 
 
 
G.698.3Multichannel seeded DWDM applications with single-channel optical interfaces
 
 
 
G.698.4: Multichannel bi-directional DWDM applications with port agnostic single-channel optical interfaces
 
           Collapse <b>G.700-G.709</b>: General    G.700-G.799: Digital terminal equipments
 
 
Collapse <b>G.700-G.709</b>: GeneralG.700-G.709: General
 
 
 
G.701Vocabulary of digital transmission and multiplexing, and pulse code modulation (PCM) terms
 
 
 
G.702Digital hierarchy bit rates
 
 
 
G.703Physical/electrical characteristics of hierarchical digital interfaces
 
 
 
G.704Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels
 
 
 
G.705Characteristics of plesiochronous digital hierarchy (PDH) equipment functional blocks
 
 
 
G.706Frame alignment and cyclic redundancy check (CRC) procedures relating to basic frame structures defined in Recommendation G.704
 
 
 
G.707/Y.1322Network node interface for the synchronous digital hierarchy (SDH)
 
 
 
G.708Sub STM-0 network node interface for the synchronous digital hierarchy (SDH)
 
 
 
G.709/Y.1331Interfaces for the optical transport network
 
 
 
G.709.1/Y.1331.1Flexible OTN short-reach interfaces
 
 
 
G.709.2/Y.1331.2OTU4 long-reach interface
 
 
 
G.709.3/Y.1331.3Flexible OTN long-reach interfaces
    
 
 
Collapse <b>G.740-G.749</b>: Principal characteristics of second order multiplex equipmentG.740-G.749: Principal characteristics of second order multiplex equipment
 
 
 
G.741General considerations on second order multiplex equipments
 
 
 
G.742Second order digital multiplex equipment operating at 8448 kbit/s and using positive justification
 
 
 
G.743Second order digital multiplex equipment operating at 6312 kbit/s and using positive justification
 
 
 
G.744Second order PCM multiplex equipment operating at 8448 kbit/s
 
 
 
G.745Second order digital multiplex equipment operating at 8448 kbit/s and using positive/zero/negative justification
 
 
 
G.746Characteristics of second order PCM multiplex equipment operating at 6312 kbit/s
 
 
 
G.747Second order digital multiplex equipment operating at 6312 kbit/s and multiplexing three tributaries at 2048 kbit/s
 
 
 
G.773Protocol suites for Q-interfaces for management of transmission systems
 
 
Collapse <b>G.770-G.779</b>: Operations, administration and maintenance features of transmission equipmentG.770-G.779: Operations, administration and maintenance features of transmission equipment
 
 
 
G.772Protected monitoring points provided on digital transmission systems
 
 
 
 
G.774Synchronous digital hierarchy (SDH) – Management information model for the network element view
 
 
 
G.774.1Synchronous digital hierarchy (SDH) – Bidirectional performance monitoring for the network element view
 
 
 
G.774.2Synchronous digital hierarchy (SDH) – Configuration of the payload structure for the network element view
 
 
 
G.774.3Synchronous digital hierarchy (SDH) – Management of multiplex-section protection for the network element view
 
 
 
G.774.4Synchronous digital hierarchy (SDH) – Management of the subnetwork connection protection for the network element view
 
 
 
G.774.5Synchronous digital hierarchy (SDH) – Management of connection supervision functionality (HCS/LCS) for the network element view
 
 
 
G.774.6Synchronous digital hierarchy (SDH) – Unidirectional performance monitoring for the network element view
 
 
 
G.774.7Synchronous digital hierarchy (SDH) – Management of lower order path trace and interface labelling for the network element view
 
 
 
G.774.8Synchronous digital hierarchy (SDH) – Management of radio-relay systems for the network element view
 
 
 
G.774.9Synchronous digital hierarchy (SDH) – Configuration of linear multiplex-section protection for the network element view
 
 
 
G.774.10Synchronous digital hierarchy (SDH) – Multiplex Section (MS) shared protection ring management for the network element view
 
 
 
G.775Loss of Signal (LOS), Alarm Indication Signal (AIS) and Remote Defect Indication (RDI) defect detection and clearance criteria for PDH signals
 
 
 
G.776.1Managed objects for signal processing network elements
 
 
 
G.776.2SPNE mechanisms/auxiliary functions
 
 
 
G.776.3ADPCM DCME configuration map report
 
 
 
G.776.4Signal processing network equipment
 
 
Collapse <b>G.780-G.789</b>: Principal characteristics of multiplexing equipment for the synchronous digital hierarchyG.780-G.789: Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
 
 
 
G.780/Y.1351Terms and definitions for synchronous digital hierarchy (SDH) networks
 
 
 
G.781Synchronization layer functions for frequency synchronization based on the physical layer
 
 
 
G.783Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
 
 
 
G.784Management aspects of synchronous digital hierarchy (SDH) transport network elements
 
 
 
G.785Characteristics of a flexible multiplexer in a synchronous digital hierarchy environment
 
 
Collapse <b>G.790-G.799</b>: Other terminal equipmentG.790-G.799: Other terminal equipment
 
 
 
G.791General considerations on transmultiplexing equipments
 
 
 
G.792Characteristics common to all transmultiplexing equipments
 
 
 
G.793Characteristics of 60-channel transmultiplexing equipments
 
 
 
G.794Characteristics of 24-channel transmultiplexing equipments
 
 
 
G.795Characteristics of codecs for FDM assemblies
 
 
 
G.796Characteristics of a 64 kbit/s cross-connect equipment with 2048 kbit/s access ports
 
 
 
G.797Characteristics of a flexible multiplexer in a plesiochronous digital hierarchy environment
 
 
 
G.798Characteristics of optical transport network hierarchy equipment functional blocks
 
 
 
G.798.1Types and characteristics of optical transport network equipment
 
 
 
G.799.1/Y.1451.1Functionality and interface specifications for GSTN transport network equipment for interconnecting GSTN and IP networks
 
 
 
G.799.2Mechanism for dynamic coordination of signal processing functions
 
 
 
G.799.3Signal processing functionality and performance of an IP-to-IP voice gateway optimized for the transport of voice and voiceband data
 
 
 
G.799.4Procedures for the control of de-jitter buffers used in PSTN-IP gateways carrying voiceband data
 
Collapse <b>G.800-G.899</b>: Digital networksG.800-G.899: Digital networks
 
 
Collapse <b>G.800-G.809</b>: General aspectsG.800-G.809: General aspects
 
 
 
G.800Unified functional architecture of transport networks
 
 
 
G.801Digital transmission models
 
 
 
G.802Interworking between networks based on different digital hierarchies and speech encoding laws
 
 
 
G.803Architecture of transport networks based on the synchronous digital hierarchy (SDH)
 
 
 
G.804ATM cell mapping into plesiochronous digital hierarchy (PDH)
 
 
 
G.805Generic functional architecture of transport networks
 
 
 
G.806Characteristics of transport equipment – Description methodology and generic functionality
 
 
 
G.807Generic functional architecture of the optical media network
 
 
 
G.808Terms and definitions for network protection and restoration
 
 
 
G.808.1Generic protection switching – Linear trail and subnetwork protection
 
 
 
G.808.2Generic protection switching – Ring protection
 
 
 
G.808.3Generic protection switching – Shared mesh protection
 
 
 
G.809Functional architecture of connectionless layer networks
 
 
Collapse <b>G.810-G.819</b>: Design objectives for digital networksG.810-G.819: Design objectives for digital networks
 
 
 
G.810Definitions and terminology for synchronization networks
 
 
 
G.811Timing characteristics of primary reference clocks
 
 
 
G.811.1Timing characteristics of enhanced primary reference clocks
 
 
 
G.812Timing requirements of slave clocks suitable for use as node clocks in synchronization networks
 
 
 
G.813Timing characteristics of SDH equipment slave clocks (SEC)
 
 
Collapse <b>G.820-G.829</b>: Synchronization, quality and availability targetsG.820-G.829: Synchronization, quality and availability targets
 
 
 
G.820/I.351/Y.1501Relationships among ISDN, IP-based network and physical layer performance Recommendations
 
 
 
G.821Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Services Digital Network
 
 
 
G.822Controlled slip rate objectives on an international digital connection
 
 
 
G.823The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy
 
 
 
G.824The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy
 
 
 
G.825The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)
 
 
 
G.826End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections
 
 
 
G.827Availability performance parameters and objectives for end-to-end international constant bit-rate digital paths
 
 
 
G.828Error performance parameters and objectives for international, constant bit-rate synchronous digital paths
 
 
 
G.829Error performance events for SDH multiplex and regenerator sections
 
 
Collapse <b>G.830-G.839</b>: Network capabilities and functionsG.830-G.839: Network capabilities and functions
 
 
 
G.831Management capabilities of transport networks based on the synchronous digital hierarchy (SDH)
 
 
 
G.832Transport of SDH elements on PDH networks – Frame and multiplexing structures
 
 
Collapse <b>G.840-G.849</b>: SDH network characteristicsG.840-G.849: SDH network characteristics
 
 
 
G.841Types and characteristics of SDH network protection architectures
 
 
 
G.842Interworking of SDH network protection architectures
 
 
Collapse <b>G.850-G.859</b>: Management of transport networkG.850-G.859: Management of transport network
 
 
 
G.851.1Management of the transport network – Application of the RM-ODP framework
 
 
 
G.852.1Enterprise viewpoint for simple subnetwork connection management
 
 
 
G.852.2Enterprise viewpoint description of transport network resource model
 
 
 
G.852.3Enterprise viewpoint for topology management
 
 
 
G.852.6Enterprise viewpoint for trail management
 
 
 
G.852.8Enterprise viewpoint for pre-provisioned adaptation management
 
 
 
G.852.10Enterprise viewpoint for pre-provisioned link connection management
 
 
 
G.852.12Enterprise viewpoint for pre-provisioned link management
 
 
 
G.852.16Enterprise viewpoint for pre-provisioned route discovery
 
 
 
G.853.1Common elements of the information viewpoint for the management of a transport network
 
 
 
G.853.2Subnetwork connection management information viewpoint
 
 
 
G.853.3Information viewpoint for topology management
 
 
 
G.853.6Information viewpoint for trail management
 
 
 
G.853.8Information viewpoint for pre-provisioned adaptation management
 
 
 
G.853.10Information viewpoint for pre-provisioned link connection management
 
 
 
G.853.12Information viewpoint for pre-provisioned link management
 
 
 
G.853.16Information viewpoint for pre-provisioned route discovery
 
 
 
G.854.1Computational interfaces for basic transport network model
 
 
 
G.854.3Computational viewpoint for topology management
 
 
 
G.854.6Computational viewpoint for trail management
 
 
 
G.854.8Computational viewpoint for pre-provisioned adaptation management
 
 
 
G.854.10Computational viewpoint for pre-provisioned link connection management
 
 
 
G.854.12Computational viewpoint for pre-provisioned link management
 
 
 
G.854.16Computational viewpoint for pre-provisioned route discovery
 
 
 
G.855.1GDMO engineering viewpoint for the generic network level model
 
 
Collapse <b>G.860-G.869</b>: SDH radio and satellite systems integrationG.860-G.869: SDH radio and satellite systems integration
 
 
 
G.861Principles and guidelines for the integration of satellite and radio systems in SDH transport networks
 
 
Collapse <b>G.870-G.879</b>: Optical transport networksG.870-G.879: Optical transport networks
 
 
 
G.870/Y.1352Terms and definitions for optical transport networks
 
 
 
G.872Architecture of optical transport networks
 
 
 
G.873.1Optical transport network: Linear protection
 
 
 
G.873.2ODUk shared ring protection
 
 
 
G.873.3Optical transport network - Shared mesh protection
 
 
 
G.874Management aspects of optical transport network elements
 
 
 
G.875Optical transport network: Protocol-neutral management information model for the network element view
 
Collapse <b>G.900-G.999</b>: Digital sections and digital line systemG.900-G.999: Digital sections and digital line system
 
 
Collapse <b>G.900-G.909</b>: GeneralG.900-G.909: General
 
 
 
G.901General considerations on digital sections and digital line systems
 
 
 
G.902Framework Recommendation on functional access networks (AN) – Architecture and functions, access types, management and service node aspects
 
 
Collapse <b>G.910-G.919</b>: Parameters for optical fibre cable systemsG.910-G.919: Parameters for optical fibre cable systems
 
 
 
G.911Parameters and calculation methodologies for reliability and availability of fibre optic systems
 
 
Collapse <b>G.920-G.929</b>: Digital sections at hierarchical bit rates based on a bit rate of 2048 kbit/sG.920-G.929: Digital sections at hierarchical bit rates based on a bit rate of 2048 kbit/s
 
 
 
G.921Digital sections based on the 2048 kbit/s hierarchy
 
 
G.930-G.939: Digital line transmission systems on cable at non-hierarchical bit rates [Empty]
 
 
Collapse <b>G.940-G.949</b>: Digital line systems provided by FDM transmission bearersG.940-G.949: Digital line systems provided by FDM transmission bearers
 
 
 
G.941Digital line systems provided by FDM transmission bearers
 
 
Collapse <b>G.950-G.959</b>: Digital line systemsG.950-G.959: Digital line systems
 
 
 
G.950General considerations on digital line systems
 
 
 
G.951Digital line systems based on the 1544 kbit/s hierarchy on symmetric pair cables
 
 
 
G.952Digital line systems based on the 2048 kbit/s hierarchy on symmetric pair cables
 
 
 
G.953Digital line systems based on the 1544 kbit/s hierarchy on coaxial pair cables
 
 
 
G.954Digital line systems based on the 2048 kbit/s hierarchy on coaxial pair cables
 
 
 
G.955Digital line systems based on the 1544 kbit/s and the 2048 kbit/s hierarchy on optical fibre cables
 
 
 
G.957Optical interfaces for equipments and systems relating to the synchronous digital hierarchy
 
 
 
G.959.1Optical transport network physical layer interfaces
 
 
  
 
 
Collapse <b>G.970-G.979</b>: Optical fibre submarine cable systemsG.970-G.979: Optical fibre submarine cable systems
 
 
 
G.971General features of optical fibre submarine cable systems
 
 
 
G.972Definition of terms relevant to optical fibre submarine cable systems
 
 
 
G.973Characteristics of repeaterless optical fibre submarine cable systems
 
 
 
G.973.1Longitudinally compatible DWDM applications for repeaterless optical fibre submarine cable systems
 
 
 
G.973.2Multichannel DWDM applications with single channel optical interfaces for repeaterless optical fibre submarine cable systems
 
 
 
G.974Characteristics of regenerative optical fibre submarine cable systems
 
 
 
G.975Forward error correction for submarine systems
 
 
 
G.975.1Forward error correction for high bit-rate DWDM submarine systems
 
 
 
G.976Test methods applicable to optical fibre submarine cable systems
 
 
 
G.977Characteristics of optically amplified optical fibre submarine cable systems
 
 
 
G.978Characteristics of optical fibre submarine cables
 
 
 
G.979Characteristics of monitoring systems for optical submarine cable systems
 
 
Collapse <b>G.980-G.989</b>: Optical line systems for local and access networksG.980-G.989: Optical line systems for local and access networks
 
 
 
G.981PDH optical line systems for the local network
 
 
 
G.982Optical access networks to support services up to the ISDN primary rate or equivalent bit rates
 
 
 
G.983.1Broadband optical access systems based on Passive Optical Networks (PON)
 
 
 
G.983.2ONT management and control interface specification for B-PON
 
 
 
G.983.3A broadband optical access system with increased service capability by wavelength allocation
 
 
 
G.983.4A broadband optical access system with increased service capability using dynamic bandwidth assignment
 
 
 
G.983.5A broadband optical access system with enhanced survivability
 
 
 
G.984.1Gigabit-capable passive optical networks (GPON): General characteristics
 
 
 
G.984.2Gigabit-capable Passive Optical Networks (G-PON): Physical Media Dependent (PMD) layer specification
 
 
 
G.984.3Gigabit-capable passive optical networks (G-PON): Transmission convergence layer specification
 
 
 
G.984.4Gigabit-capable passive optical networks (G-PON): ONT management and control interface specification
 
 
 
G.984.5Gigabit-capable passive optical networks (G-PON): Enhancement band
 
 
 
G.984.6Gigabit-capable passive optical networks (GPON): Reach extension
 
 
 
G.984.7Gigabit-capable passive optical networks (GPON): Long reach
 
 
 
G.985100 Mbit/s point-to-point Ethernet based optical access system
 
 
 
G.9861 Gbit/s point-to-point Ethernet-based optical access system
 
 
 
G.98710-Gigabit-capable passive optical network (XG-PON) systems: Definitions, abbreviations and acronyms
 
 
 
G.987.110-Gigabit-capable passive optical networks (XG-PON): General requirements
 
 
 
G.987.210-Gigabit-capable passive optical networks (XG-PON): Physical media dependent (PMD) layer specification
 
 
 
G.987.310-Gigabit-capable passive optical networks (XG-PON): Transmission convergence (TC) layer specification
 
 
 
G.987.410-Gigabit-capable passive optical networks (XG-PON): Reach extension
 
 
 
G.988ONU management and control interface (OMCI) specification
 
 
 
G.98940-Gigabit-capable passive optical networks (NG-PON2): Definitions, abbreviations and acronyms
 
 
 
G.989.140-Gigabit-capable passive optical networks (NG-PON2): General requirements
 
 
 
G.989.240-Gigabit-capable passive optical networks 2 (NG-PON2): Physical media dependent (PMD) layer specification
 
 
 
G.989.340-Gigabit-capable passive optical networks (NG-PON2): Transmission convergence layer specification
 
  
 
Collapse <b>G.7000-G.7999</b>: Data over Transport – Generic aspectsG.7000-G.7999: Data over Transport – Generic aspects
 
 
Collapse <b>G.7000-G.7099</b>: GeneralG.7000-G.7099: General
 
 
 
G.7041/Y.1303Generic framing procedure
 
 
 
G.7042/Y.1305Link capacity adjustment scheme (LCAS) for virtual concatenated signals
 
 
 
G.7043/Y.1343Virtual concatenation of plesiochronous digital hierarchy (PDH) signals
 
 
 
G.7044/Y.1347Hitless adjustment of ODUflex(GFP)
 
 
Collapse <b>G.7700-G.7799</b>: Transport network control aspectsG.7700-G.7799: Transport network control aspects
 
 
 
G.7701Common control aspects
 
 
 
G.7702Architecture for SDN control of transport networks
 
 
 
G.7710/Y.1701Common equipment management function requirements
 
 
 
G.7711/Y.1702Generic protocol-neutral management Information Model for Transport Resources
 
 
 
G.7712/Y.1703Architecture and specification of data communication network
 
 
 
G.7713/Y.1704Distributed call and connection management (DCM)
 
 
 
G.7713.1/Y.1704.1Distributed Call and Connection Management (DCM) based on PNNI
 
 
 
G.7713.2/Y.1704.2Distributed Call and Connection Management: Signalling mechanism using GMPLS RSVP-TE
 
 
 
G.7713.3/Y.1704.3Distributed Call and Connection Management: Signalling mechanism using GMPLS CR-LDP
 
 
 
G.7714/Y.1705Generalized automatic discovery for transport entities
 
 
 
G.7714.1/Y.1705.1Protocol for automatic discovery in transport networks
 
 
 
G.7715/Y.1706Architecture and requirements for routing in the automatically switched optical networks
 
 
 
G.7715.1/Y.1706.1ASON routing architecture and requirements for link state protocols
 
 
 
G.7715.2/Y.1706.2ASON routing architecture and requirements for remote route query
 
 
 
G.7716/Y.1707Architecture of control plane operations
 
 
 
G.7718/Y.1709Framework for ASON management
 
 
 
G.7718.1/Y.1709.1Protocol-neutral management information model for the control plane view
 
 
 
G.7721Management requirement and information model for synchronization
 
Collapse <b>G.8000-G.8999</b>: Packet over Transport aspectsG.8000-G.8999: Packet over Transport aspects
 
 
Collapse <b>G.8000-G.8099</b>: Ethernet over Transport aspectsG.8000-G.8099: Ethernet over Transport aspects
 
 
 
G.8001/Y.1354Terms and definitions for Ethernet frames over transport
 
 
 
G.8010/Y.1306Architecture of Ethernet layer networks
 
 
 
G.8011/Y.1307Ethernet service characteristics
 
 
 
G.8012/Y.1308Ethernet UNI and Ethernet NNI
 
 
 
G.8012.1/Y.1308.1Interfaces for the Ethernet transport network
 
 
 
G.8013/Y.1731Operations, administration and maintenance (OAM) functions and mechanisms for Ethernet-based networks
 
 
 
G.8021/Y.1341Characteristics of Ethernet transport network equipment functional blocks
 
 
 
G.8021.1/Y.1341.1Types and characteristics of Ethernet transport network equipment
 
 
 
G.8023Characteristics of equipment functional blocks supporting Ethernet physical layer and Flex Ethernet interfaces
 
 
 
G.8031/Y.1342Ethernet linear protection switching
 
 
 
G.8032/Y.1344Ethernet ring protection switching
 
 
 
G.8040/Y.1340GFP frame mapping into Plesiochronous Digital Hierarchy (PDH)
 
 
 
G.8051/Y.1345Management aspects of the Ethernet transport (ET) capable network element
 
 
 
G.8052/Y.1346Protocol-neutral management information model for the Ethernet transport capable network element
 
 
 
G.8080/Y.1304Architecture for the automatically switched optical network
 
 
 
G.8081/Y.1353Terms and definitions for automatically switched optical networks
 
 
Collapse <b>G.8100-G.8199</b>: MPLS over Transport aspectsG.8100-G.8199: MPLS over Transport aspects
 
 
 
G.8101/Y.1355Terms and definitions for MPLS transport profile
 
 
 
G.8110/Y.1370MPLS layer network architecture
 
 
 
G.8110.1/Y.1370.1Architecture of the Multi-Protocol Label Switching transport profile layer network
 
 
 
G.8112/Y.1371Interfaces for the MPLS transport profile layer network
 
 
 
G.8113.1/Y.1372.1Operations, administration and maintenance mechanisms for MPLS-TP in packet transport networks
 
 
 
G.8113.2/Y.1372.2Operations, administration and maintenance mechanisms for MPLS-TP networks using the tools defined for MPLS
 
 
 
G.8121/Y.1381Characteristics of MPLS-TP equipment functional blocks
 
 
 
G.8121.1/Y.1381.1Characteristics of MPLS-TP equipment functional blocks supporting ITU-T G.8113.1/Y.1372.1 OAM mechanisms
 
 
 
G.8121.2/Y.1381.2Characteristics of MPLS-TP equipment functional blocks supporting ITU-T G.8113.2/Y.1372.2 OAM mechanisms
 
 
 
G.8131/Y.1382Linear protection switching for MPLS transport profile
 
 
 
G.8132/Y.1383MPLS-TP shared ring protection
 
 
 
G.8133Dual-homing protection for multi-protocol label switching -transport profile pseudowires
 
 
 
G.8151/Y.1374Management aspects of the MPLS-TP network element
 
 
 
G.8152/Y.1375Protocol-neutral management information model for the MPLS-TP network element
 
 
Collapse <b>G.8200-G.8299</b>: Synchronization, quality and availability targetsG.8200-G.8299: Synchronization, quality and availability targets
 
 
 
G.8201Error performance parameters and objectives for multi-operator international paths within optical transport networks
 
 
 
G.8251The control of jitter and wander within the optical transport network (OTN)
 
 
 
G.8260Definitions and terminology for synchronization in packet networks
 
 
 
G.8261/Y.1361Timing and synchronization aspects in packet networks
 
 
 
G.8261.1/Y.1361.1Packet delay variation network limits applicable to packet-based methods (Frequency synchronization)
 
 
 
G.8262/Y.1362Timing characteristics of a synchronous equipment slave clock
 
 
 
G.8262.1Timing characteristics of an enhanced synchronous equipment slave clock
 
 
 
G.8263/Y.1363Timing characteristics of packet-based equipment clocks
 
 
 
G.8264/Y.1364Distribution of timing information through packet networks
 
 
 
G.8265Architecture and requirements for packet-based frequency delivery
 
 
 
G.8265.1Precision time protocol telecom profile for frequency synchronization
 
 
 
G.8266/Y.1376Timing characteristics of telecom grandmaster clocks for frequency synchronization
 
 
 
G.8271/Y.1366Time and phase synchronization aspects of telecommunication networks
 
 
 
G.8271.1/Y.1366.1Network limits for time synchronization in packet networks
 
 
 
G.8271.2/Y.1366.2Network limits for time synchronization in packet networks with partial timing support from the network
 
 
 
G.8272/Y.1367Timing characteristics of primary reference time clocks
 
 
 
G.8272.1Timing characteristics of enhanced primary reference time clocks
 
 
 
G.8273/Y.1368Framework of phase and time clocks
 
 
 
G.8273.2/Y.1368.2Timing characteristics of telecom boundary clocks and telecom time slave clocks
 
 
 
G.8273.3/Y.1368.3Timing characteristics of telecom transparent clocks
 
 
 
G.8273.4Timing characteristics of telecom boundary clocks and telecom time slave clocks for use with partial timing support from the network
 
 
 
G.8275/Y.1369Architecture and requirements for packet-based time and phase distribution
 
 
 
G.8275.1/Y.1369.1Precision time protocol telecom profile for phase/time synchronization with full timing support from the network
 
 
 
G.8275.2/Y.1369.2Precision time protocol telecom profile for time/phase synchronization with partial timing support from the network
 
 
G.8300-G.8399: Mobile network transport aspects
 
 
Collapse <b>G.8600-G.8699</b>: Service ManagementG.8600-G.8699: Service Management
 
 
 
G.8601/Y.1391Architecture of service management in multi-bearer, multi-carrier environment
 
Collapse <b>G.9000-G.9999</b>: Access networksG.9000-G.9999: Access networks
 
 
Collapse <b>G.9700-G.9799</b>: Metallic access networks                                      G.9700-G.9799: Metallic access networks
 
 
 
G.9700Fast access to subscriber terminals (G.fast) - Power spectral density specification
 
 
 
G.9701Fast access to subscriber terminals (G.fast) – Physical layer specification
 
 
 
G.9710Multi-gigabit fast access to subscriber terminals (MGfast) - Power spectral density specification
 
 
Collapse <b>G.9800-G.9899</b>: Optical line systems for local and access networks   G.9800-G.9899: Optical line systems for local and access networks
 
 
 
G.9801Ethernet passive optical networks using OMCI
 
 
 
G.9802Multiple-wavelength passive optical networks (MW-PONs)
 
 
 
G.9803Radio over fibre systems
 
 
 
G.9804.1Higher speed passive optical networks – Requirements
 
 
 
G.9807.110-Gigabit-capable symmetric passive optical network (XGS-PON)
 
 
 
G.9807.210 Gigabit-capable passive optical networks (XG(S)-PON): Reach extension
 
 
  
 
Collapse <b>G supplements</b>: Supplements to ITU-T G-series RecommendationsG supplements: Supplements to ITU-T G-series Recommendations
 
 
G Suppl. 4Certain methods of avoiding the transmission of excessive noise between interconnected systems
 
 
G Suppl. 5Measurement of the load of telephone circuits under field conditions
 
 
G Suppl. 7Loss-frequency response of channel-translating equipment used in some countries for international circuits
 
 
G Suppl. 8Method proposed by the Belgian telephone administration for interconnection between coaxial and symmetric pair systems
 
 
G Suppl. 17Group-delay distortion performance of terminal equipment
 
 
G Suppl. 19Digital crosstalk measurement (method used by the Administrations of France, the Netherlands and Spain)
 
 
G Suppl. 22Mathematical models of multiplex signals
 
 
G Suppl. 26Estimating the signal load margin of FDM wideband amplifier equipment and transmission systems
 
 
G Suppl. 27Interference from external sources
 
 
G Suppl. 28Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) systems during the transition from an analogue to a digital network
 
 
G Suppl. 29Planning of mixed analogue-digital circuits (chains, connections)
 
 
G Suppl. 32Transfer of alarm information on 60-channel transmultiplexing equipment
 
 
G Suppl. 34Temperature in underground containers for the installation of repeaters
 
 
G Suppl. 35Guidelines concerning the measurement of wander
 
 
G Suppl. 36Jitter and wander accumulation in digital networks
 
 
G Suppl. 37ITU-T Recommendation G.763 digital circuit multiplication equipment (DCME) tutorial and dimensioning
 
 
G Suppl. 38Variable bit rate calculations for the ITU-T Recommendation G.767 Digital Circuit Multiplication Equipment (DCME)
 
 
G Suppl. 39Optical system design and engineering considerations
 
 
G Suppl. 40Optical fibre and cable Recommendations and standards guideline
 
 
G Suppl. 41Design guidelines for optical fibre submarine cable systems
 
 
G Suppl. 42Guide on the use of the ITU-T Recommendations related to optical fibres and systems technology
 
 
G Suppl. 43Transport of IEEE 10GBASE-R in optical transport networks (OTN)
 
 
G Suppl. 44Test plan to verify B-PON interoperability
 
 
G Suppl. 45GPON power conservation
 
 
G Suppl. 46G-PON interoperability test plan between optical line terminations and optical network units
 
 
G Suppl. 47General aspects of optical fibres and cables
 
 
G Suppl. 4810-Gigabit-capable passive optical networks: Interface between media access control with serializer/deserializer and physical medium dependent sublayers
 
 
G Suppl. 49Rogue optical network unit (ONU) considerations
 
 
G Suppl. 50Overview of digital subscriber line Recommendations
 
 
G Suppl. 51Passive optical network protection considerations
 
 
G Suppl. 52Ethernet ring protection switching
 
 
G Suppl. 53Guidance for Ethernet OAM performance monitoring
 
 
G Suppl. 54Ethernet linear protection switching
 
 
G Suppl. 55Radio-over-fibre (RoF) technologies and their applications
 
 
G Suppl. 56OTN transport of CPRI signals
 
 
G Suppl. 57Smart home profiles for 6LoWPAN devices
 
 
G Suppl. 58Optical transport network module framer interfaces
 
 
G Suppl. 59Guidance on optical fibre and cable reliability
 
 
G Suppl. 60Ethernet linear protection switching with dual node interconnection
 
 
G Suppl. 61ITU-T G.1020 – Internet protocol aware quality of service management
 
 
G Suppl. 62Gfast certification
 
 
G Suppl. 63ITU-T G.989.3 TC layer operating in ITU T G.987.3 or ITU-T G.9807.1 TC layer mode
 
 
G Suppl. 64PON transmission technologies above 10 Gb/s per wavelength
 
 
G Suppl. 65Simulations of transport of time over packet networks
 
 
G Suppl. 665G wireless fronthaul requirements in a passive optical network context
 
 
G Suppl. 67Application of optical transport network Recommendations to 5G transport
 
 
G Suppl. 68Synchronization OAM requirements
 
 
G-100 series Suppl. 31Principles of determining an impedance strategy for the local network
 
 
G-100 series Suppl. 32Transmission aspects of digital mobile radio systems

ITU STANDARD FIBER CATEGORIES

<p style="><p style=" class=" "="">

ITU has categorized single mode fibers to assist suppliers and their customers to meet specific telecom applications. This is under ITU-T Study Group 15.

Note:

  • Many fiber properties are actually specified in cable, since that is usually the way fiber is used. Also many fiber properties can change once the fiber has been cabled. Some other statistically based properties are specified on a link basis.
  • ITU standards are developed that sometimes prefers weakening requirements in order to gain broad consensus. They should be viewed as necessary but not sufficient conditions for an optical fiber to enable a particular application.

Optical fiber designs are characterized based on their dispersion curve. The following figure shows some of the historically significant dispersion curves labeled by ITU categories.

 

The three most important criteria are:

  1. Zero-dispersion wavelength (ZDW) λ0 where the dispersion is zero
  2. The value of dispersion in the transmission band
  3. The slope of dispersion across a band

 

ITU G.651.1 - CHARACTERISTICS OF A 50/125 ΜM MULTIMODE GRADED INDEX OPTICAL FIBRE CABLE FOR THE OPTICAL ACCESS NETWORK

ITU G.651.1 Recommendation link

Worldwide, various technologies for broadband access networks are advancing rapidly to provide the high capacity needed for the increasing customer demands with respect to new services. Apart from the technologies, also the network structure and customer densities vary considerably.

A specific segment, which is the main focus of ITU-T G.651.1, is the network in a multi-tenant building. Quite a large percentage of all customers in the world are living in these buildings.

Due to the high connection density and the short distribution cable lengths, cost-effective high capacity optical networks can be designed and installed by making use of 50/125µm graded-index multimode fibers.

The effective use of this network type has been shown by its extended and experienced use for datacom systems in enterprise buildings with system bit rates ranging from 10 Mbit/s up to 10 Gbit/s.

This fibers are 50/125µm graded-index multimode optical fibers which are suitable to be used in the 850nm or 1300nm region, or alternatively may be used in both wavelength regions simultaneously.

ITU G.652 - CHARACTERISTICS OF A SINGLE-MODE OPTICAL FIBRE AND CABLE

ITU G.652 Recommendation link

The original standard single mode fiber is specified in ITU G.652. This fiber has a Mode Field Diameter (MFD) in the range 8.6~9.5µm, a maximum cable cutoff wavelength of 1260nm and Zero Dispersion Window (ZDW) in the range of 1300~1324nm.

This fiber typically has a chromatic dispersion of 17 ps/nm-km at 1550nm (this can be excessive for dispersion sensitive applications).

Although there are several categories within G.652, the most modern is G.625D fiber that has low attenuation in cable (maximum of 0.3 dB/km at 1550nm), good Polarization Mode Dispersion (PMD) performance (better than 0.2 ps/km1/2 link design value), and low water peak (LWP) attenuation at 1383nm.

The LWP designation requires that loss at 1383nm be less than the maximum loss at other wavelengths from 1310 to 1625nm. Based on 1310-nm specifications, LWP generally means 1383nm loss < 0.35 dB/km. However, some manufacturers have virtually eliminated the water peak by careful processing.

Because the E-band is available on account of the LWP loss, the G.652D fiber is optimized for full spectrum use at data rates up to 10 Gbps (STM-64).

It is important to note that some manufacturers routinely offer G.652 fibers with a PMD specification three to four times tighter than required by the standard. Low PMD is critical for future upgrades to a fiber network.

ITU G.653 - CHARACTERISTICS OF A DISPERSION-SHIFTED, SINGLE-MODE OPTICAL FIBRE AND CABLE

ITU G.653 Recommendation link

The dispersion-shifted fiber (DSF) was developed in the late 1980s to support transmission in the low-loss 1550nm window. These systems transmitted a single channel in the vicinity of the loss minimum at 1550nm where Zero Dispersion Window (ZDW) was located. This allowed increasing the loss limited transmission distance.

DSF was standardized in ITU G.653 with a ZDW in the range 1500~1600nm. Today, this fiber has limited application because of nonlinearities that occur between WDM optical channels when they are close to the ZDW.

The embedded base of DSF in some countries has been upgraded by moving to L-band systems for DWDM.

ITU G.654 - CHARACTERISTICS OF A CUT-OFF SHIFTED SINGLE-MODE OPTICAL FIBRE AND CABLE

ITU G.654 Recommendation link

Cutoff-Shifted fiber was standardized in ITU G.654 to provide lower loss and allow higher Mode Field Diameter (MFD) than G.652 (some categories go as high as 13µm), a cutoff wavelength as high as 1530nm, with low attenuation limits (0.22 dB/km at 1550nm) and a tight PMD specification (as low as 0.2 ps/km1/2 ).

The chromatic dispersion is specified at 1550nm and is similar in size to that of G.652 fiber. This fiber has been applied in submarine systems, in combination with a cabled inverse dispersion fiber, as well as long un-amplified links.

ITU G.655 - CHARACTERISTICS OF A NON-ZERO DISPERSION-SHIFTED SINGLE-MODE OPTICAL FIBRE AND CABLE

ITU G.655 Recommendation link

As high bit rate transmission systems were designed using wideband EDFAs and the low fiber loss in the C-band, it became clear that the high chromatic dispersion of G.652 fiber at 1550nm would limit transmission capacity because of dispersion-related signal impairment, and that the zero dispersion of DSF near 1550nm would result in signal impairment related to nonlinear propagation effects. A better soluton was found by shifting the ZDW away from the C-band.

A balance of fiber properties for long-haul applications is found in the Non-Zero Dispersion Shifted Fibers (NZDSF) that are standardized in ITU G.655.

These fibers support transmission rates of 40 Gbps (STM-256) over long distances. The key features are low (but nonzero) chromatic dispersion in the C-band and low PMD (< 0.2 ps/km1/2). Cable cutoff wavelength is held below 1450nm. A classification groups G.655 fibers according to "low" or "medium" dispersion.

In addition, limitations to the dispersion over the entire 1460- to 1625-nm range will be specified.

ITU G.656 - CHARACTERISTICS OF A FIBRE AND CABLE WITH NON-ZERO DISPERSION FOR WIDEBAND OPTICAL TRANSPORT

ITU G.656 Recommendation link

This category is the CWDM/DWDM optimized fibers. The original purpose of this category was to have low dispersion from 1460 to 1625nm to decrease Inter-Symbol Interference (ISI) that limits uncompensated CWDM transmission. However, the requirements evolved substantially during consideration and debate.

In the final analysis, G.656 can be considered to be the wideband Raman-enabled fiber standard. These fibers have specified performance over the 1460- to 1625-nm wavelength range (similar to the newer G.655 table).

In fact, fibers in the proposed medium dispersion category of G.655 also fulfill the requirements for G.656. The key feature of G.656 fiber is that there is a minimum chromatic dispersion of 2 ps/nm-km at 1460nm, which enables good performance (free from nonlinearities) for signal channels, as well as Raman pumps at short wavelengths. Some G.655 fiber are lacking in this regard.

Fibers according to G.656 allow highest performance with optical channels spaced over a wide band at 40 Gbps and over long distances.

ITU G.657 - CHARACTERISTICS OF A BENDING-LOSS INSENSITIVE SINGLE-MODE OPTICAL FIBRE AND CABLE FOR THE ACCESS NETWORK

ITU G.657 Recommendation link

Worldwide, technologies for broadband access networks are advancing rapidly. Among these, the technology applying single-mode fiber provides for a high-capacity transmission medium which can answer the growing demand for broadband services.

The experience with the installation and operation of single mode fiber and cable-based networks is huge, and ITU G.652 fiber have been adapted to this experience.

Nevertheless, the specific use in an optical access network puts different demands on the fiber and cable which impacts its optimal performance characteristics.

Differences with respect to the use in general transport network are mainly due to the high density network of distribution and drop cables in the access network. The limited space and the many manipulations ask for operator-friendly fiber performance and low bending sensitivity. In addition, the cabling in the crowded telecom offices where space is a limiting factor has to be improved accordingly.

So ITU G.657 is standardized to support this optimization by recommending strongly improved bending performance compared with the existing G.652 single mode fiber and cables. This is done by means of two categories of single mode fibers.

Category A is fully compliant with the ITU-T G.652 single mode fibers and can be deployed throughout the access network.

Category B, is not necessarily compliant with ITU-T G.652 but is capable of low values of macrobending losses at very low bend radii and is intended for use inside buildings or near buildings (e.g. outside building riser cabling). These category B fibers are system compatible with ITU-T G.657.A (and ITU-T G.652D) fibers in access networks.

Optical Fiber Standards

SignificanceITU-T StandardsCharacteristicsWavelength CoverageApplications
50/125µm Graded-Index Multimode Fiber for FTTH SystemsG.651.1 Cladding Diameter & Core Diameter:
125 ±2 µm; 50 ±3 µm
Macrobend loss: 15mm
Attenuation:
"Max at 850 nm: 1 dB
Max at 1300 nm: 1 dB
Max at 850 nm: 3.5 dB/km
Max at 1300 nm: 1.0 dB/km"


 
850 nm;
1300 nm
Support FTTH and FTTZ architectures; Recommend the use of quartz multimode fiber for access networks in specific environments.