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Relative intensity noise for laser diodes with arbitrary amounts of optical feedback

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2 Author(s)
K. I. Kallimani ; Sch. of Electron. & Electr. Eng., Bath Univ., UK ; M. J. O'Mahony

A unified study of the noise characteristics of semiconductor lasers with optical feedback and short external cavity length is presented. A new set of nonlinear rate equations that can describe a laser diode with any amount of optical feedback is proposed. The relative intensity noise (RIN) is calculated by using a numerical solution of these equations. This paper concentrates mainly on the moderate and strong feedback regimes. The spectral phenomena observed during the transition from the weak feedback to the “coherence collapse” regime and then to the strong feedback regime are studied and explained. The effect of the variation of some of the laser diode parameters on the RIN characteristics is also investigated

Published in:

IEEE Journal of Quantum Electronics  (Volume:34 ,  Issue: 8 )