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Abstract
A multi-wavelength single-longitudinal-mode optical fiber laser using fiber Bragg grating (FBG) as wavelength selector and FBG based Fabry-Perot filters as frequency selector is studied. The optical fiber laser includes several fiber laser resonators and there is a length of erbium-doped fiber used as gain medium in each resonator. Each of the laser resonators uses a FBG as wavelength selector and there are two FBG based Fabry-Perot filters used as frequency selectors in each resonator and thus each resonator can emit single longitudinal mode laser. Experiments show that the fiber laser can emit multiple wavelengths simultaneously, and each wavelength is single longitudinal mode. The stability of each wavelength can reach 10−6.
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