Influence of end reflectivity on gain saturation in a planar distributed feedback laser |
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Authors: | P Szczepa%nski D Sikorski W Woli%nski |
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Institution: | (1) Institute of Microelectronics and Optoelectronics, Technical University ul., Koszykowa 75, PL-00-662 Warsaw, Poland |
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Abstract: | An approximate method for the analysis of planar-waveguide distributed-feedback lasers is extended to include a nonvanishing reflectivity at the ends of the structure. An index grating structure with parasitic losses is investigated. An expression for the small-signal gain coefficient 0MN as a function of the output power P
MNout normalized to the saturation power P
s
, coupling coefficient K, complex reflectivity R of end reflectors, and waveguide parameters is presented. |
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Keywords: | 42 60B 42 60D 42 80F 42 80L |
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