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Techniques/technologies to mitigate compensation in long haul submarine optical networks

Map of transmission impairments in long-haul submarine systems and some techniques/technologies for their mitigation or compensation.  ... Membership Required You...
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  • March 26, 2025
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A short discussion on 980nm and 1480nm pump based Erbium Doped Fiber Amplifiers (EDFA)

The 980nm pump needs three energy level for radiation while 1480nm pumps can excite the ions directly to the metastable...
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  • March 26, 2025
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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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  • March 26, 2025
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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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  • March 26, 2025
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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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  • March 26, 2025
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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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  • March 26, 2025
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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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  • March 26, 2025
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