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 α0MN 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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Szczepa%nski, P., Sikorski, D. & Woli%nski, W. Influence of end reflectivity on gain saturation in a planar distributed feedback laser. Appl. Phys. B 49, 565–570 (1989). https://doi.org/10.1007/BF00324958
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DOI: https://doi.org/10.1007/BF00324958