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Throughput-Behaviour-Under-FEC-Degradation_14_08_2026_11_46_48

Throughput Behaviour Under FEC Degradation

Mapping pre-FEC bit error ratio onto frame loss, error marking and delivered goodput on a coherent optical link. Coherent Transmission...
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  • August 14, 2026
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Nominal-port-rate-against-delivered-client-throughput_14_08_2026_11_44_23

Nominal Port Rate Against Delivered Client Throughput

Every overhead layer between a customer frame and a 400 Gb/s port, computed once and resolved to a delivered payload...
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  • August 14, 2026
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Client-Configuration-and-Partial-Fill-on-ZR-Class-Modules_14_08_2026_11_42_00

Client Configuration and Partial Fill on ZR-Class Modules

Which client combinations OIF 400ZR, OpenZR+ and OIF 800ZR accept, how those clients land in tributary slots, and why a......
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  • August 14, 2026
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Rate-Adaptation-Across-Clock-Domains-in-OTN_14_08_2026_11_39_48

Rate Adaptation Across Clock Domains in OTN

How AMP, BMP and GMP absorb the frequency difference between a client and an independently clocked line container,... …
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  • August 14, 2026
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400ZR-versus-OpenZR-mode-differences_13_08_2026_20_04_04

400ZR Versus OpenZR+: Mode, FEC and Reach Differences

How the OIF baseline and the MSA extension diverge on forward error correction, frame containers, symbol …
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  • August 13, 2026
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Host-Electrical-Interface-Compliance-for-Pluggable-Coherent-Optics_13_08_2026_18_45_41

Host Electrical Interface Compliance for Pluggable Coherent Optics

Test points, insertion loss allocation, eye limits, link training and client mapping across the short electrical channel …
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  • August 13, 2026
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Host-Power-and-Thermal-Design-for-Coherent-Pluggables_13_08_2026_18_42_55

Host Power and Thermal Design for Coherent Pluggables

An application note on the power and thermal contract a line card owes a high-power coherent …
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  • August 13, 2026
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Turn-Up-Retune-and-Reacquisition-Timing-in-Coherent-Interfaces_13_08_2026_18_39_43

Turn-Up, Retune, and Reacquisition Timing in Coherent Interfaces

Four timing cases separate a 40 ms recovery from a 200 s one, and the difference …
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  • August 13, 2026
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Span-Loss-Capability-and-GOSNR-Margin-Two-Separate-Ceilings_12_08_2026_22_08_48

Span Loss Capability and GOSNR Margin: Two Separate Ceilings in Long-Span Design

A long span fails in one of two distinct ways: the amplifier …
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  • August 12, 2026
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First-Second-and-Third-Order-Raman-Pumping_12_08_2026_21_53_58

First, Second, and Third Order Raman Pumping

Why cascaded pumping moves the gain region rather than simply adding gain, and what that buys on spans …
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  • August 12, 2026
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