High channel-count comb filter based on multi-concatenated sampled chirped fiber Bragg gratings |
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| Authors: | Hongwei Yuan Jun Zhou Weitao Ma Yongtang Sun Tiefeng Xu |
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| Institution: | Hongwei Yuan,Jun Zhou,Weitao Ma,Yongtang Sun,and Tiefeng Xu 1Department of Optical Engineering,School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China 2Institute of Photonics,Faculty of Science,Ningbo University,Ningbo 315211,China |
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| Abstract: | A high channel-count comb filter based on multi-concatenated sampled chirped fiber Bragg gratings(MC-SCFBGs) is proposed and optimally designed by using several chirped gratings with different fundamental grating periods,instead of non-grating sections of SCFBGs.The numerical simulations of the reflection spectra show that the channel spacing and the channel bandwidth in MC-SCFBGs are smaller than those in multi-concatenated chirped fiber Bragg gratings(MC-CFBGs) and that the spectral bandwidth of MC-SCFBGs... |
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