Title :
In-Line Abrupt Taper Optical Fiber Mach–Zehnder Interferometric Strain Sensor
Author :
Tian, Zhaobing ; Yam, Scott S H
Author_Institution :
Dept. of Phys., Queen´´s Univ., Kingston, ON
Abstract :
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.
Keywords :
Mach-Zehnder interferometers; fibre optic sensors; strain sensors; Mach-Zehnder interferometric strain sensor; beam propagation method; in-line abrupt taper optical fiber sensor; long-period-grating-type sensor; loss 5 dB; single-mode fiber; Abrupt taper; Mach–Zehnder interferometer; beam propagation method (BPM); strain sensor;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2009360
