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Data-rate dependence of suppression of reflection-induced intensity noise in Fabry-Perot semiconductor lasers

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6 Author(s)
Guan Lim Koay ; Photonics Res. Lab., Melbourne Univ., Vic., Australia ; A. J. Lowery ; R. S. Tucker ; T. Higashi
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We demonstrate experimentally that intensity noise caused by optical feedback to a Fabry-Perot semiconductor laser can be suppressed by digital modulation, and that this suppression is bit-rate dependent. We use a multimode rate equation model of the laser to explain the mechanism for the bit-rate dependence of the suppression. We conclude that, if the delay time of the reflected light is much greater than the modulation bit period, the intensity noise is suppressed

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IEEE Journal of Quantum Electronics  (Volume:31 ,  Issue: 10 )