Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62061
Title: Highly-sensitive gas pressure sensor using twin-core fiber based in-line mach-zehnder interferometer
Authors: Li, Z
Liao, C
Wang, Y
Xu, L
Wang, D 
Dong, X
Liu, S
Wang, Q
Yang, K
Zhou, J
Issue Date: 2015
Publisher: Optical Society of America
Source: Optics express, 2015, v. 23, no. 5, p. 6673-6678 How to cite?
Journal: Optics express 
Abstract: A Mach-Zehnder interferometer based on a twin-core fiber was proposed and experimentally demonstrated for gas pressure measurements. The in-line Mach-Zehnder interferometer was fabricated by splicing a short section of twin-core fiber between two single mode fibers. A micro-channel was created to form an interferometer arm by use of a femtosecond laser to drill through one core of the twin-core fiber. The other core of the fiber was remained as the reference arm. Such a Mach-Zehnder interferometer exhibited a high gas pressure sensitivity of -9.6 nm/MPa and a low temperature cross-sensitivity of 4.4 KPa/°C. Moreover, ultra-compact device size and all-fiber configuration make it very suitable for highly-sensitive gas pressure sensing in harsh environments.
URI: http://hdl.handle.net/10397/62061
EISSN: 1094-4087
DOI: 10.1364/OE.23.006673
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