Article | REF: TE7115 V2

Transmission systems on optical fibers

Authors: Michel JOINDOT, Irène JOINDOT

Publication date: January 10, 2013, Review date: March 21, 2016

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2. Sources and modulators

2.1 Sources and source noise

Like any electromagnetic oscillator, a laser never delivers a perfect sine wave. This is affected by amplitude and phase noise, which can degrade the performance of communication systems . Amplitude fluctuations are usually characterized by Relative Intensity Noise (RIN), defined as the ratio of the power spectral density of normalized power fluctuations to the average transmitted power. If the transmitted power is expressed as < P > + ΔP where < P > is the average power and ΔP the random fluctuation around...

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Sources and modulators