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《Journal of Optoelectronics·Laser》 2018-06
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Theoretical analysis of a novel all-fiber interleaver by using improved Maeh-Zehnder interferometer

LU Yan;WEI Xiao-meng;GAO Min;LU Huai-wei;LUO Guan-wei;School of Mathematics and Physics,Lanzhou Jiaotong University;Gansu Institute of Architectural Design and Research;School of Electronic and Information Engineering,Lanzhou Jiaotong University;  
According to the phase modification provided by the fiber ring resonator,a novel all-fiber MachZehnder interferometer(MZI)is proposed.This improved MZI is composed of a fiber ring resonator and a 2×2 single fiber coupler.The fiber ring resonator with 2×2 input and output ports with a self-feedback loop is based on a collinear 3×3 fiber coupler,and it is used as input device of the MZI.The transfer function of the MZI is derived.The filter characteristics of the MZI,which is used as all-fiber MZI-interleaver,are analyzed by numerical simulation.The analysis results show that,compared with conventional all-fiber MZI-interleavers,the output waveforms of proposed interleaver are more close to a nearly square spectrum response,the isolation in stopband,the rolloff in transition band,the bandwidth of passband and stopband of proposed interleaver are simultaneously improved remarkably.
【Fund】: 国家自然科学基金(11161027 11172119)资助项目
【CateGory Index】: TN253;TN713
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