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Proceedings Paper

Ring resonator coupled Mach-Zehnder interferometer for sensing application
Author(s): Jing Zhang; Zhongfan Liu; Yundong Zhang
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Paper Abstract

We investigate the light propagation characteristics that depend on strong dispersion response in two-ring resonant structure. Strong dispersion response brings obvious effective phase shift change in resonant arm of Mach-Zehnder interferometer. We propose that two-ring coupled Mach-Zehnder interferometer exhibits sharp asymmetric Fano line shape. It mainly decided by the combined action of a π/2 phase bias in reference arm and effective phase shift in resonant arm. It can greatly enhance the sensitivity of sensor. It allows for measuring effective refractive index change down to 10-9 refractive index units.

Paper Details

Date Published: 21 August 2014
PDF: 5 pages
Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 923329 (21 August 2014); doi: 10.1117/12.2068433
Show Author Affiliations
Jing Zhang, Dalian Nationalities Univ. (China)
Zhongfan Liu, Dalian Nationalities Univ. (China)
Yundong Zhang, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 9233:
International Symposium on Photonics and Optoelectronics 2014
Zhiping Zhou, Editor(s)

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