Silicon-nanowire-based optical sensor with high sensitivity and large measurement range by using Mach-Zehnder interferometer-coupled microring

Jianwei Wang; Sailing He; Daoxin Dai

doi:10.1364/ACP.2010.79900V

Optical Sensors and Biophotonics II
Proceedings of SPIE-OSA (Optica Publishing Group, 2010),
paper 79900V
•https://doi.org/10.1364/ACP.2010.79900V

Silicon-nanowire-based optical sensor with high sensitivity and large measurement range by using Mach-Zehnder interferometer-coupled microring

Jianwei Wang, Sailing He, and Daoxin Dai

Asia Communications and Photonics Conference and Exhibition 2010

Shanghai China
8–12 December 2010
ISBN: 9780819485588

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J. Wang, S. He, and D. Dai, "Silicon-nanowire-based optical sensor with high sensitivity and large measurement range by using Mach-Zehnder interferometer-coupled microring," in Optical Sensors and Biophotonics II, Q. Luo, F. Chuang, S. Haacke, and C. Yang, eds., Vol. 7990 of Proceedings of SPIE-OSA (Optica Publishing Group, 2010), paper 79900V.

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Abstract

A Mach–Zehnder interferometer-coupled microring is experimentally demonstrated for optical sensing with a high sensitivity (~111 nm /RIU), a high extinction ratio (>26dB), and a very large quasi free-spectral-range (>100 nm), which helps to obtain a large measurement range. The MZI-coupled microring sensor still has good performance when the reflective index of the ambient materials largely changes (1<n<1.538).

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