Integrated Multi-Functional Optical Filter Based on a Self-Coupled Microring Resonator Assisted MZI Structure

In general, to fit various application scenarios, different types of optical filters are needed and designed individually, which leads to high cost and long development times. Here we proposed a reconfigurable multi-functional optical filter based on self-coupled microring assisted MZI structure, wh...

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Bibliographic Details
Published in:Journal of lightwave technology 2021-03, Vol.39 (5), p.1429-1437
Main Authors: Zheng, Pengfei, Xu, Xuemeng, Hu, Guohua, Zhang, Ruohu, Yun, Binfeng, Cui, Yiping
Format: Article
Language:English
Subjects:
Couplers
Integrated optical filter
Microwave filters
Microwave photonics
Optical communication
Optical coupling
Optical filters
Optical ring resonators
Optical switching
Optical waveguides
Phase shifters
Reconfiguration
Resonator filters
Resonators
self-coupled microring resonator
Signal processing
silicon photonics
Transfer matrices
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Summary:In general, to fit various application scenarios, different types of optical filters are needed and designed individually, which leads to high cost and long development times. Here we proposed a reconfigurable multi-functional optical filter based on self-coupled microring assisted MZI structure, which can be reconfigured into five different kinds of devices, including the optical switch, asymmetric MZI filter, ring assisted MZI filter, double injection microring resonator and self-coupled micro-ring assisted MZI filter. An analytical model was established based on the transfer matrix method to investigate the function reconfigurations, which were then verified experimentally by simply controlling the six thermo-optical phase shifters in the structure. Furthermore, our proposed reconfigurable multi-functional optical filter provides performances that are comparable to the individual devices or even better, which has the potential to be applied in the integrated optical signal processing and microwave photonics systems.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2020.3037709