A research on the characteristics of an interleaver with a symmetrical resonator

LU Huai-wei; WEI Yun; WU Kai-jun1; WANG Chun-li; JIANG Zhan-jun; LUO Guan-wei

doi:doi:10.1007/s11801-013-2362-6

光电子快报（英文版）, 2013, 9 (1): 21, Published Online: Oct. 12, 2017

A research on the characteristics of an interleaver with a symmetrical resonator

论文大纲

LU Huai-wei ^1,*WEI Yun ¹WU Kai-jun1 ¹WANG Chun-li ²JIANG Zhan-jun ²LUO Guan-wei ¹

Author Affiliations

¹ School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, China

² School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Abstract

In order to improve the transmission performance of the conventional Mach-Zehnder interferometer (MZI), a novel interleaver combining an “8” form ring resonator with a planar 3×3 single fiber coupler is proposed. Based on the phase modulation provided by the ring resonator, a flat filtering response is obtained by optimizing the coupling angle of resonator. The output expression is derived and numerical simulation is performed. The simulation indicates that the 0.5 dB passband and 25 dB stopband of the proposed interleaver are simultaneously improved remarkably, which are much wider than those of the single-stage MZI and the two-stage MZI interleavers, and the filtering performance of the proposed interleaver, which achieves a nearly square spectrum response, is also much better. Compared with the interleaver based on an asymmetrical MZI with a resonator in one arm, there is no difference between the intensities of two coherent beams in the condition of considering the influence of the propagation loss. Theoretical analysis shows that the influence of the propagation loss on extinction ratio can be effectively reduced.

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LU Huai-wei, WEI Yun, WU Kai-jun1, WANG Chun-li, JIANG Zhan-jun, LUO Guan-wei. A research on the characteristics of an interleaver with a symmetrical resonator[J]. 光电子快报（英文版）, 2013, 9(1): 21.

A research on the characteristics of an interleaver with a symmetrical resonator

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