Integrated optical filter consisting of micro-ring resonator embedded in Fabry-Perot cavity

Wenting Jiao; Junqiang Sun

doi:10.1117/12.2592271

26 January 2021 Integrated optical filter consisting of micro-ring resonator embedded in Fabry-Perot cavity

Wenting Jiao, Junqiang Sun

Proceedings Volume 11767, 2020 International Conference on Optoelectronic Materials and Devices; 117671G (2021) https://doi.org/10.1117/12.2592271
Event: 2020 International Conference on Optoelectronic Materials and Devices, 2020, Guangzhou, China

Abstract

An optical filter is proposed and demonstrated based on a micro-ring resonator (MRR) embedded in a Fabry-Perot (FP) cavity. By exploiting coherent interference within the FP cavity to reconstruct the transmission spectrum of the MRR, high extinction ratio (ER) and narrow bandwidth for periodic notch filtering is obtained. The FP cavity is composed by two circular Bragg grating (CBG) mirrors, and the two mirrors are well placed so that the light wave can be constantly reflected between the two mirrors to generate resonance. The device is simulated theoretically and fabricated on a silicon-on-insulator (SOI) platform. The proposed optical filter has an ER up to 31dB and a minimum 3dB bandwidth of 10pm according to the simulation result.

Citation Download Citation

Wenting Jiao and Junqiang Sun "Integrated optical filter consisting of micro-ring resonator embedded in Fabry-Perot cavity", Proc. SPIE 11767, 2020 International Conference on Optoelectronic Materials and Devices, 117671G (26 January 2021); https://doi.org/10.1117/12.2592271

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