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Oscillation wavelength of fiber Bragg grating semiconductor lasers

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Based on the physical fact that a laser containing a gain medium with homogenous line broadening oscillates at the wavelength which requires the smallest threshold gain due to the mode competition effect, after taking into account the wavelength-depended reflectivity distribution profile of a fiber Bragg grating, the oscillation wavelength λ l of fiber Bragg grating semiconductor lasers has been investigated theoretically. The results show that the laser oscillation wavelength λ B is not fixed at the Bragg reflection wavelength λ l of fiber Bragg grating, and the offset between λ B and λ l depends on the reflectivity distribution profile of fiber Bragg grating and the gain profile of semiconductor gain medium.

Keywords: Semiconductor laser; fiber Bragg grating; oscillation wavelength

Document Type: Original Article


Affiliations: Department of Physics, Southwest Normal University, Chongqing 400715, P.R. China

Publication date: October 1, 2002


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