Gain and index saturation in circular-grating distributed-feedback semiconductor lasers

Keith J. Kasunic; Mahmoud Fallahi

doi:10.1117/12.275563

6 June 1997 Gain and index saturation in circular-grating distributed-feedback semiconductor lasers

Keith J. Kasunic, Mahmoud Fallahi

Proceedings Volume 2994, Physics and Simulation of Optoelectronic Devices V; (1997) https://doi.org/10.1117/12.275563
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

We report numerical results for the above-threshold spectral properties of circular-grating distributed-feedback semiconductor lasers. Our model includes a radially-varying gain and index saturation, as well as a uniformly- distributed grating loss, in the solution of the coupled- mode equations. Our results show a multi-mode spectrum for large coupling strengths, a consequence of mode competition induced by the spatially-varying gain distribution associated with the grating losses. We also find that a single-mode spectrum is possible over a limited power range.

Citation Download Citation

Keith J. Kasunic and Mahmoud Fallahi "Gain and index saturation in circular-grating distributed-feedback semiconductor lasers", Proc. SPIE 2994, Physics and Simulation of Optoelectronic Devices V, (6 June 1997); https://doi.org/10.1117/12.275563

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