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Threshold gain and threshold current analysis of circular grating DFB and DBR lasers

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7 Author(s)
Wu, C. ; Bell-Northern Res., Ottawa, Ont., Canada ; Makino, T. ; Najafi, S.I. ; Maciejko, Romain
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A TE-cylindrical wave threshold gain and threshold current analysis is presented for circular grating distributed feedback (CG-DFB) and circular grating distributed-Bragg-reflector (CG-DBR) lasers. Mode properties of CG-DFB/DBR lasers are discussed. It is found that the threshold gain, threshold current density and threshold current of CG-DBR lasers can be much lower than those of CG-DFB lasers

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Quantum Electronics, IEEE Journal of  (Volume:29 ,  Issue: 10 )