Abstract

A chirped anti-resonant reflecting optical waveguide (ARROW) for the simultaneous measurement of pressure intensity and spatial localization has been proposed and experimentally demonstrated. An etched chirped ARROW was fabricated, which shows a chirped spectral characteristic. Additionally, an in-line Mach–Zehnder interferometer is also formed with the core mode and higher-order modes. The pressure intensity and the spatial localization can be detected by interrogating the wavelength shift of the in-line Mach–Zehnder interferometer and the chirped ARROW, respectively. The experimental results show that the pressure sensitivity of $ - {4.42}\;{\rm nm/MPa}$ and the spatial sensitivity of 0.86 nm/cm can be achieved. The proposed fiber optic sensor can be used for multipoint pressure detection in the fields of security, structure monitoring, and oil exploration, etc.

© 2020 Optical Society of America

High-sensitivity gas pressure sensor based on a multimode interferometer using hollow-core tube lattice fiber

Zhengyong Li, Changrui Liao, Yatao Yang, Ying Wang, and Yiping Wang
Opt. Lett. 45(16) 4571-4574 (2020)

High-sensitivity temperature sensor based on anti-resonance in high-index polymer-coated optical fiber interferometers

Xiaokang Lian, Qiang Wu, Gerald Farrell, and Yuliya Semenova
Opt. Lett. 45(19) 5385-5388 (2020)

Fiber in-line Mach–Zehnder interferometer based on an inner air-cavity for high-pressure sensing

W. Talataisong, D. N. Wang, R. Chitaree, C. R. Liao, and C. Wang
Opt. Lett. 40(7) 1220-1222 (2015)

Phase-shifted fiber Bragg grating modulated by a hollow cavity for measuring gas pressure

Junxian Luo, Shen Liu, Yuanyuan Zhao, Yanping Chen, Kaiming Yang, Kuikui Guo, Jun He, Changrui Liao, and Yiping Wang
Opt. Lett. 45(2) 507-510 (2020)

Distributed time delay sensing in a random fiber grating array based on chirped pulse φ-OTDR

Yuan Wang, Ping Lu, Stephen Mihailov, Liang Chen, and Xiaoyi Bao
Opt. Lett. 45(13) 3423-3426 (2020)