Shift of the Oscillation wavelength of fiber Bragg grating semiconductor lasers from the bragg reflection wavelength of fiber grating

摘要

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_l is not fixed at the Bragg reflection wavelength λ_B of fiber Bragg grating, and the offset betweenλ_B and λ_l depends on the reflectivity distribution profile of fiber Bragg grating and the gain profile of semiconductor gain medium.