Spectral Characteristics of Multiple and Cascaded Phase-Shifted Fiber Bragg Grating

Chuan Zhong,Changyu Shen,Ke Li,Xinyong Dong,Yongxin Jin

Photonics and Optoelectronics（2011）

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摘要

Spectral characteristics of multiple and cascaded phase-shifted fiber Bragg grating (FBG) are analyzed based on the coupled-mode theory with the transfer matrix method. It shows that multi-wavelength output (or comb filters) can be obtained by increasing the number of the phase shifts. The peak wavelength of the transmission band of the cascaded phase-shifted FBG will move towards long wavelength direction when compared with one FBG with multiple phase shifts, and the bandwidths become narrower.

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关键词

transfer matrix method,transmission band,bragg gratings,fiber bragg grating,phase-shifted,coupled mode analysis,coupled-mode theory,phase-shifted fiber bragg grating,optical fibres,fbg,spectra characteristics,comb filters,transfer function matrices,phase shift,refractive index,optical fiber

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