Coupled optical microcavities: an enhanced refractometric sensing configuration

Optics Express
Yun-Feng XiaoLan Yang

Abstract

We theoretically investigate the application of coupled optical microcavities as refractive index sensors. Coupled microcavities support a very sharp asymmetrical Fano resonance, which gives rise to faster changes in output transmission than the changes from a single cavity. With the output transmission at a fixed wavelength that varies much faster than it does in a single-cavity resonance, the result is enhanced sensitivity of the device to the changes in refractive index. In addition, it is observed that both thermal and optical Kerr effects can be utilized to improve the sensitivity.

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Citations

Apr 16, 2009·Journal of Biophotonics·Nan JokerstTalmage Tyler
Nov 22, 2018·Applied Optics·Ye QuJiahua Li
Dec 6, 2011·Optics Letters·Qingzhong HuangJinzhong Yu
Dec 25, 2013·Optics Letters·Chao Wang, Christopher P Search
Sep 9, 2016·Optics Express·Linhua XuLan Yang
Aug 19, 2009·Optics Express·P PrabhathanPamidighantam V Ramana
Mar 19, 2009·Optics Express·Alexander C Ruege, Ronald M Reano
May 15, 2021·Optics Letters·Farhan AzeemHarald G L Schwefel

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