Highly sensitive digital optical sensor with large measurement range based on the dual-microring resonator with waveguide-coupled feedback

doi:10.1088/1674-1056/23/3/034206

Abstract We propose a novel high-performance digital optical sensor based on the Mach–Zehnder interferential effect and the dual-microring resonators with the waveguide-coupled feedback. The simulation results show that the sensitivity of the sensor can be orders of magnitude higher than that of a conventional sensor, and high quality factor is not critical in it. Moreover, by optimizing the length of the feedback waveguide to be equal to the perimeter of the ring, the measurement range of the proposed sensor is twice as much as that of the conventional sensor in the weak coupling case.

Keywords: optical sensor microring resonator high sensitivity large measurement range

Received: 14 June 2013
Revised: 23 July 2013
Accepted manuscript online:

PACS:	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.79.-e	(Optical elements, devices, and systems)
	42.82.-m	(Integrated optics)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2010CB327601).

Corresponding Authors: Xiang Xing-Ye
E-mail: xiangxingye0409@126.com

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Xiang Xing-Ye (向星烨), Wang Kui-Ru (王葵如), Yuan Jin-Hui (苑金辉), Jin Bo-Yuan (晋博源), Sang Xin-Zhu (桑新柱), Yu Chong-Xiu (余重秀) Highly sensitive digital optical sensor with large measurement range based on the dual-microring resonator with waveguide-coupled feedback 2014 Chin. Phys. B 23 034206

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Highly sensitive digital optical sensor with large measurement range based on the dual-microring resonator with waveguide-coupled feedback

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