Chinese Optics Letters, Volume. 15, Issue 2, 020603(2017)
Temperature-insensitive refractive index sensor based on Mach–Zehnder interferometer with two microcavities
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Fig. 2. Microscopic image of (a) the PCF cross-section, (b) microcavity 1 of sensor 2, (c) microcavity 1 of sensor 3, (d) microcavity 1 of sensor 4, and (e) microcavity and collapse area.
Fig. 4. Wavelength shifts of interference spectrum of (a) sensor 1, (b) sensor 2, (c) sensor 3, and (d) sensor 4.
Fig. 5. Relations between wavelength shifts and the surrounding RI of different sensors.
Fig. 7. Wavelength shifts with the increase of the temperatures for sensor 4.
Table 1. Microcavity Sizes and Related Arc Powera
View tableView in ArticleTable 1. Microcavity Sizes and Related Arc Powera
Parameters Sensor 2 Sensor 3 Sensor 4 Arc power (%) 70% 60% 50% ED 1 (μm) 33.1 38.3 44.6 PD 1 (μm) 14.3 12.0 10.6 ED 2 (μm) 30.9 36.6 42.9 PD 2 (μm) 15.1 13.1 10.0
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Yinfeng Wang, Sumei Wang, Lan Jiang, Hua Huang, Liuchao Zhang, Peng Wang, Lingya Lv, Zhitao Cao. Temperature-insensitive refractive index sensor based on Mach–Zehnder interferometer with two microcavities[J]. Chinese Optics Letters, 2017, 15(2): 020603
Paper Information
Category: Fiber Optics and Optical Communications
Received: Oct. 19, 2016
Accepted: Dec. 6, 2016
Published Online: Jul. 26, 2018
The Author Email: Sumei Wang (wangsumei@bit.edu.cn)
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