Sources and modulators
Transmission systems on optical fibers

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TE7115 V2 Article

Sources and modulators
Transmission systems on optical fibers

Authors : Michel JOINDOT, Irène JOINDOT

Review date: March 21, 2016 | Lire en français

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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...

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