Abstract
The intensity noise level of laser light is an important consideration for many optical communications systems. At moderate power, a semiconductor laser enters the shot noise regime in which the noise level increases with output power, but the noise level is enhanced over the true shot noise floor in relation to the spontaneous noise enhancement factor (nsp), carrier spontaneous lifetime, and other fundamental parameters. The shot noise floor thus provides a useful reference from which to study the behavior of laser intensity noise.
© 1991 Optical Society of America
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