Effective linewidth enhancement factor and spontaneous emissionrate of DFB lasers with gain coupling |
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| Authors: | Pan X Tromborg B Olesen H Lassen HE |
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| Affiliation: | TFL Telecommun. Res. Lab., Horsholm; |
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| Abstract: | A field rate equation governing the noise and dynamic properties of a DFB (distributed feedback) laser with gain coupling is presented. Analytic expressions for the effective linewidth enhancement factor and spontaneous emission rate are derived. It is shown numerically that the linewidth contribution from spontaneous emission can be substantially reduced in DFB lasers with gain coupling |
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