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Maximum number of erbium-doped fiber amplifiers in a DWDM lin

The maximum number of erbium-doped fiber amplifiers (EDFAs) in a fiber chain is about four to  six.   Explanation  The rule is based on...
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  • March 26, 2025
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How and where do we get pre and post FEC BER?

The first thing to note is that for each frame there are two sets of 20 parity bits. One set...
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  • March 26, 2025
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Optical Fiber Link Design requirements

Optical Fiber Link Design requirements The optical link design essentially is putting the various optical components, so that information can...
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  • March 26, 2025
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Temperature dependency of EDFA Gain for various channels

Here the results are after evaluating the effect of a thermal variation on the output tilt. In this particular set-up the...
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  • March 26, 2025
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Difference between EDFAs requirements for Terrestrial(Land) Systems and Submarine Systems.

Compared with requirements for EDFAs for terrestrial applications and for Submarine applications, there are major important differences making the two...
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  • March 26, 2025
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Spectral Hole Burning (SHB) phenomenon in Optical Networks

Spectral Hole Burning (SHB) Spectral hole burning (SHB) is a major limitation of amplified WDM systems with high channel count. The...
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  • March 26, 2025
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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.  
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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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