Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
733368 | Optics & Laser Technology | 2016 | 4 Pages |
Abstract
•The asymmetric infiltration twin core PCF structure is novel.•The sensor has a high temperature sensitivity of 1.23 nm/°C.•The sensor is capable of measuring temperature and strain simultaneously.•Sensor structure is compact.
We demonstrate a fiber-optic dual parameter sensor based on a water filled Mach–Zehnder interferometer. Such a sensor is fabricated by asymmetrically infiltrating a twin core photonic crystal fiber with water, and splicing it between single mode fibers. Two sets of interference fringes which result from multi-mode interference are obtained by such a structure. By measuring the wavelength shift of the small fringe and the big envelop of the spectrum, strain and temperature can be determined simultaneously.
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Authors
Shuhui Liu, Zhe Wang, Maoxiang Hou, Jie Tian, Jujiang Xia,