supported by the National Natural Science Foundation of China (No.60777035);Scientific Research Key Project Fundof Ministry of Education (No.208040);Research Project of Education Committee of Shanghai (No.07ZZ87);Shanghai Leading Academic Discipline Project (No.T0501)
The transmission spectrum of the coated phase-shifted long-period fiber gratings(LPFGs) with single and multiple phase shifts is analyzed by the coupled-mode theory and the transfer matrix method,and the influences of...