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

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

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 w...

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Veröffentlicht in:IEEE photonics technology letters 2009-02, Vol.21 (3), p.161-163
Hauptverfasser: Zhaobing Tian, Yam, S.S.-H.
Format: Artikel
Sprache:eng
Schlagworte:
Abrupt taper
beam propagation method (BPM)
Capacitive sensors
Extinction ratio
Insertion loss
Mach-Zehnder interferometer
Optical attenuators
Optical fiber sensors
Optical fiber testing
Optical fibers
Optical interferometry
Optical losses
Optical sensors
strain sensor
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Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.2009360