TY - GEN
T1 - Gain and index saturation in circular-grating distributed-feedback semiconductor lasers
AU - Kasunic, Keith J.
AU - Fallahi, Mahmoud
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:0031372861
SN - 0819424056
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 205
EP - 214
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Society of Photo-Optical Instrumentation Engineers
T2 - Physics and Simulation of Optoelectronic Devices V
Y2 - 10 February 1997 through 14 February 1997
ER -