Fluctuations in semiconductor laser emissions

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Abstract
Fluctuations in the optical power emitted by a semiconductor laser into various spectral lines is due to the large fluctuations in the size of the coherent photon packets started by individual spontaneous-emission photons. These fluctuations persist for nanoseconds and create the partition noise effect observed in high bit-rate optical-fiber systems. Representative output fluctuations in mode power have been obtained by a Monte Carlo technique which simulates the stochastic nature of photon emission. The results give a physical basis for recent experimental observations.

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