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In-Line Abrupt Taper Optical Fiber Mach–Zehnder Interferometric Strain Sensor

2008; Institute of Electrical and Electronics Engineers; Volume: 21; Issue: 3 Linguagem: Inglês

10.1109/lpt.2008.2009360

1941-0174

Zhaobing Tian, Scott S.-H. Yam,

Advanced Fiber Laser Technologies

A Mach-Zehnder interferometer with two abrupt single-mode fiber tapers is simulated, constructed, and demonstrated. The interferometer has an insertion loss of 5 dB and an extinction ratio over 15 dB. The interferometer is tested as a strain sensor based on the maximum attenuation wavelength shift with a comparable sensitivity (slope: 2000 nm/ epsiv, R 2 = 0.996) with long-period-grating-type sensor and promises low fabrication cost.