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A simple technique to multiply the lasing wavelength in a semiconductor optical amplifier (SOA)-based fiber ring laser is proposed and demonstrated, which is based on the utilization of a multiple phase-shifts inserted multichannel fiber Bragg grating(FBG).
In this paper, a novel continuous phase-only sampling function is introduced, in which optimization for an 81-channel phase-only sampling function with excellent channel uniformity and high in-band energy efficiency is obtained by using the simulated annealing algorithm. Compared to the numerical results, an 81-channel (spacing 50 GHz) phase-only sampled linearly chirped FBG are successfully demonstrated
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