Sensitivity-enhanced microring resonator with partial intermediate refractive index cladding

Ping Zhang; Youlei Ding; Yufei Wang

doi:10.1117/1.OE.57.9.097103

24 September 2018 Sensitivity-enhanced microring resonator with partial intermediate refractive index cladding

Ping Zhang, Youlei Ding, Yufei Wang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 9, 097103 (September 2018). https://doi.org/10.1117/1.OE.57.9.097103

Abstract

In this report, a microring structure with partial intermediate refractive index cladding is proposed and simulated using finite-difference time-domain. The introduced intermediate refractive index cladding is a transitional layer between the ring waveguide and the environment to achieve a greater detection range of evanescent wave, which is of great benefit to the light–matter interaction. The sensitivity of the modified microring resonator is obtained up to 480 nm / RIU, which is eight times the microring resonator without partial intermediate refractive index cladding. This scheme can offer a way to improve the sensitivity of optical microcavity biosensors.

Citation Download Citation

Ping Zhang, Youlei Ding, and Yufei Wang "Sensitivity-enhanced microring resonator with partial intermediate refractive index cladding," Optical Engineering 57(9), 097103 (24 September 2018). https://doi.org/10.1117/1.OE.57.9.097103

Received: 3 June 2018; Accepted: 6 September 2018; Published: 24 September 2018

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