A method used to introduce an arbitrary equivalent-phase-shift(EPS)into an asymmetric sampled Bragg grating(SBG)is reported.Under the same structural parameters except for the sampling pattern,the asymmetric SBG offer...A method used to introduce an arbitrary equivalent-phase-shift(EPS)into an asymmetric sampled Bragg grating(SBG)is reported.Under the same structural parameters except for the sampling pattern,the asymmetric SBG offers better performance than that of a normal SBG structure for keeping single-longitudinal-mode(SLM)operation.This is because the proposed sampling pattern can suppress the 0th-order light resonance due to the mismatch between the two different grating sections along the whole SBG.This method can be used to design and fabricate semiconductor lasers and multiwavelength laser arrays(MLAs)with the required EPS at high yield and low cost.展开更多
基金the National Natural Science Foundation of China under Grant No 60877043the Natural Science Foundation of Changzhou Institute of Technology under Grant No YN1008the New Century Excellent Talents in University.
文摘A method used to introduce an arbitrary equivalent-phase-shift(EPS)into an asymmetric sampled Bragg grating(SBG)is reported.Under the same structural parameters except for the sampling pattern,the asymmetric SBG offers better performance than that of a normal SBG structure for keeping single-longitudinal-mode(SLM)operation.This is because the proposed sampling pattern can suppress the 0th-order light resonance due to the mismatch between the two different grating sections along the whole SBG.This method can be used to design and fabricate semiconductor lasers and multiwavelength laser arrays(MLAs)with the required EPS at high yield and low cost.
