Fiber Optic Electric Field Intensity Sensor Based on Liquid Crystal-Filled Photonic Crystal Fiber Incorporated Ring Laser

Liu Yibin; Weihao Lin; Mang I Vai; Perry Ping Shum; Li-Yang Shao; Wei He; Shuaiqi Liu; Fang Zhao; Weizhi Wang; Liu Yuhui

doi:10.1109/JPHOT.2021.3136879

IEEE Photonics Journal (Jan 2022)

Fiber Optic Electric Field Intensity Sensor Based on Liquid Crystal-Filled Photonic Crystal Fiber Incorporated Ring Laser

Liu Yibin,
Weihao Lin,
Mang I Vai,
Perry Ping Shum,
Li-Yang Shao,
Wei He,
Shuaiqi Liu,
Fang Zhao,
Weizhi Wang,
Liu Yuhui

Affiliations

Liu Yibin: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Weihao Lin: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Mang I Vai: State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, China
Perry Ping Shum: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Li-Yang Shao: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Wei He: Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Shuaiqi Liu: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Fang Zhao: ORCiD; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
Weizhi Wang: Peng Cheng Laboratory, Shenzhen, China
Liu Yuhui: Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China

DOI: https://doi.org/10.1109/JPHOT.2021.3136879
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 5

Abstract

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Optical fiber sensors are of splendid strength for electrical field intensity sensor due to characteristics including the immunity to electromagnetic interference, lightweight, high sensitivity, and large bandwidth. In this paper, we proposed an electric field intensity sensor based on Mach-Zehnder interferometer (MZI) based liquid crystal (LC) filled photonic crystal fiber (PCF) embedded in optical fiber ring laser (FRL). The air hole of PCF combines the LC and fiber core together. When LC is introduced into air holes, it can maintain the waveguide based on external parameters. The photonic bandgap effect significantly improved the sensitivity between light and external electrical field intensity. Thanks to the FRL demodulation, a high signal to noise ratio (SNR) spectrum about 35 dB is obtained. Besides, in comparison with traditional LC-PCF structures, the sensitivity of ours is as high as 1.1 nm/Vrms which is about twice than traditional sensors. At the same time, the stability of proposed sensor was verified which fluctuation was 0.15 nm around 2.5 hours. Therefore, our structure is expected to practical applications in remote electric field monitor and such electric modulate electro-optical devices.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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