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Open AccessArticle

Liquid-Filled Highly Asymmetric Photonic Crystal Fiber Sagnac Interferometer Temperature Sensor

1
Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
2
Department of Electrical and Computer Engineering, Science and Research Branch, Azad University, Tehran 147789385, Iran
3
Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
4
Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
5
Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
*
Authors to whom correspondence should be addressed.
Photonics 2020, 7(2), 33; https://doi.org/10.3390/photonics7020033
Received: 26 March 2020 / Revised: 13 May 2020 / Accepted: 15 May 2020 / Published: 19 May 2020
In this paper, we theoretically designed and numerically studied a high-resolution and ultrasensitive photonic crystal fiber temperature sensor by selective filling of a liquid with high thermo-optic coefficient in one of the airholes of the fiber. The finite element method was utilized to study the propagation characteristics and the modal birefringence of the fiber under different ambient temperatures. A large base birefringence value of 7.7 × 10−4 as well as a large birefringence sensitivity of almost 29% to a 10 °C temperature variation was achieved for the optimized fiber design with liquid chloroform between 15 °C and 35 °C. We also studied the performance of the proposed optical fiber in a temperature sensing Sagnac interferometer. An average linear temperature sensitivity of 17.53 nm/°C with an average resolution of 5.7 × 10−4 °C was achieved over a temperature range of 20 °C (15 °C to 35 °C). View Full-Text
Keywords: fiber-optic temperature sensor; chloroform fiber; Sagnac interferometer fiber-optic temperature sensor; chloroform fiber; Sagnac interferometer
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MDPI and ACS Style

Monfared, Y.E.; Ahmadian, A.; Dhasarathan, V.; Liang, C. Liquid-Filled Highly Asymmetric Photonic Crystal Fiber Sagnac Interferometer Temperature Sensor. Photonics 2020, 7, 33. https://doi.org/10.3390/photonics7020033

AMA Style

Monfared YE, Ahmadian A, Dhasarathan V, Liang C. Liquid-Filled Highly Asymmetric Photonic Crystal Fiber Sagnac Interferometer Temperature Sensor. Photonics. 2020; 7(2):33. https://doi.org/10.3390/photonics7020033

Chicago/Turabian Style

Monfared, Yashar E.; Ahmadian, Amir; Dhasarathan, Vigneswaran; Liang, Chunhao. 2020. "Liquid-Filled Highly Asymmetric Photonic Crystal Fiber Sagnac Interferometer Temperature Sensor" Photonics 7, no. 2: 33. https://doi.org/10.3390/photonics7020033

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