Static frequency chirping in λ/4-phase-shifteddistributed-feedback semiconductor lasers: influence of carrier-densitynonuniformity due to spatial hole burning |
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| Authors: | Kikuchi K. |
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| Affiliation: | Dept. of Electron. Eng., Tokyo Univ.; |
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| Abstract: | An experimental and theoretical study of the effect of carrier-density nonuniformity on frequency modulation (FM) characteristics of 1.3-μm λ/4-phase-shifted distributed-feedback (DFB) lasers is discussed. The static frequency chirping is measured using a recently developed method that is free from dynamical chirping as well as thermal frequency shift. The amount of chirping shows a strong dependence on the bias current level. This is explained theoretically by considering the nonuniform carrier-density distribution due to the spatial hole burning effect |
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