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

被引：3
|
作者：
Xiang Xing-Ye [1 ]
Wang Kui-Ru [1 ]
Yuan Jin-Hui [1 ]
Jin Bo-Yuan [1 ]
Sang Xin-Zhu [1 ]
Yu Chong-Xiu [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 03期
关键词：
optical sensor; microring resonator; high sensitivity; large measurement range; SILICON-ON-INSULATOR; RING-RESONATORS; LABEL-FREE; BIOSENSOR;
D O I：
10.1088/1674-1056/23/3/034206
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：5
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