Multistage second-order microring-resonator filters with box-like spectral responses and relaxed fabrication tolerances

We demonstrate an optical filter based on multistage second-order microring resonators（MRs） with box-like spectral responses. Compared with single-stage high-order optical filters with the same number of MRs,the demonstrated structure has comparable performances in the aspects of passband flatness,...

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Bibliographic Details
Published inJournal of semiconductors Vol. 38; no. 11; pp. 86 - 90
Main Authors Zhao, Haiyang, Zhang, Lei, Shao, Sizhu, Ding, Jianfeng, Fu, Xin, Yang, Lin
Format Journal Article
LanguageEnglish
Published 01.11.2017
Subjects
二阶
光谱响应
制造公差
多级
微环
插入损耗
松
谐振滤波器
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Summary:We demonstrate an optical filter based on multistage second-order microring resonators（MRs） with box-like spectral responses. Compared with single-stage high-order optical filters with the same number of MRs,the demonstrated structure has comparable performances in the aspects of passband flatness, rolling-off slope and insertion loss. Moreover, the architecture relaxes the fabrication tolerance, electrical wiring and tuning difficulty since there are only two MRs in each stage. We experimentally demonstrate this kind of optical filter with five stages, which shows a 3-dB bandwidth of ~17 GHz, a rolling-off slope of ~5 dB/GHz and an on-chip insertion loss of ~6 dB.
Bibliography:11-5781/TN
wavelength division multiplexing optical filter microring resonator
We demonstrate an optical filter based on multistage second-order microring resonators（MRs） with box-like spectral responses. Compared with single-stage high-order optical filters with the same number of MRs,the demonstrated structure has comparable performances in the aspects of passband flatness, rolling-off slope and insertion loss. Moreover, the architecture relaxes the fabrication tolerance, electrical wiring and tuning difficulty since there are only two MRs in each stage. We experimentally demonstrate this kind of optical filter with five stages, which shows a 3-dB bandwidth of ~17 GHz, a rolling-off slope of ~5 dB/GHz and an on-chip insertion loss of ~6 dB.
ISSN:1674-4926
DOI:10.1088/1674-4926/38/11/114009