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

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2 Author(s)
Zhaobing Tian ; Dept. of Phys., Queen's Univ., Kingston, ON ; Scott S. -H. Yam

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.

Published in:

IEEE Photonics Technology Letters  (Volume:21 ,  Issue: 3 )