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Equivalent circuit theory of spontaneous emission power in semiconductor laser optical amplifiers

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2 Author(s)
Chu, C.-Y.J. ; FinaTech Ltd., Hong Kong ; Ghafouri-Shiraz, H.

An equivalent circuit model for a semiconductor laser amplifier (SLA) has been developed. This model can be used with a transfer matrix method (TMM) to analyze the performance of a SLA. The validity of the model is explored in this paper by analyzing the spontaneous emission noise power in a Fabry-Perot SLA with a uniform distribution of material gain coefficient. The result is found to be identical with that derived by the Green function approach. The physical reasons for the validity of the equivalent circuit model are also discussed, and possible further applications of the model are suggested

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 5 )