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Infographics

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  • March 26, 2025
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Utilities

Quick Optical Converter Power(mW);  ↔  Power(dBm); Coupling ratio (%);  ↔  Insertion Loss(dB); Frequency(THz);  ↔  λ (nm); Δƒ(GHz)  ↔  Δλ(nm) Q-factor;...
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Optical Fiber Standards

  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...
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Brief introduction on Interviewing at Amazon Web Services (AWS)

    AWS Network Development Engineer Interview Guide Amazon Web Services (AWS) is a subsidiary of Amazon providing on-demand cloud...
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  • March 26, 2025
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Calculating Transponder bandwidth

Transponder bandwidth is the product of Modulation , Baud Rate and the Polarisation. BW=Modulation x Baud x Polarisation Following table...
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Understanding Optical Return Loss (ORL) in Optical Fiber system

Understanding Optical Return Loss Optical fiber communication professionals might have heard  about ORL (Optical Return Loss ) during design and operation...
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  • March 26, 2025
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Animated map shows the undersea cables that power the internet

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What is the reason behind most of the EDFAs (Erbium Doped Fiber Amplifier) using only 980nm and 1480nm as their pumping wavelengths and not any other wavelengths?

The pump wavelength used is either 980nm or 1480 nm due to the availability of these laser sources.  In the...
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Do we still need 50 ms(milliseconds) restoration for running telecom services?

It was always exciting discussing 50ms switching/restoration time perspective for telecom circuits for every engineer who belongs to some part...
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Simplifying what and why of Raman Amplifier

Background Information The Raman amplifier is typically much more costly and has less gain than an Erbium Doped Fiber Amplifier (EDFA)...
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amplifier automation ber Bit Error Ratio Chromatic Dispersion Communication technology Data transmission DWDM edfa EDFAs Erbium-Doped Fiber Amplifiers Error correction fec Fiber optics Fiber optic technology Forward Error Correction Latency modulation network automation Network Design network management Network performance noise figure optical optical amplifiers Optical communication Optical fiber Optical network optical networking Optical networks Optical signal-to-noise ratio Optical transmission OSNR OTN Q-factor raman Raman Amplifier SDH Signal amplification Signal distortion Signal integrity Signal quality Slider Telecommunications Ticker

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