Intensity-modulated abrupt tapered Fiber Mach-Zehnder Interferometer for the simultaneous sensing of temperature and curvature

Raji, Y. M. and Lin, H. S. and Ibrahim@Ghazali, Siti Azlida and Mokhtar, Mohd Ridzuan and Yusoff, Zulfadzli (2016) Intensity-modulated abrupt tapered Fiber Mach-Zehnder Interferometer for the simultaneous sensing of temperature and curvature. Optics & Laser Technology, 86. pp. 8-13. ISSN 00303992

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Official URL: http://doi.org/10.1016/j.optlastec.2016.06.006

Abstract

An abrupt tapered fiber In-Line Mach-Zehnder Interferometer sensor for simultaneous measurement of temperature and curvature is proposed and experimentally demonstrated. The sensor head is fabricated by arcing Corning SMF-28 using a commercial arc fusion splicer. The individual parameters discrimination was achieved by manipulating the unequal sensitivities of optical power to temperature and curvature obtained at two wavelengths within the sensing spectrum. The curvature and temperature sensitivities at λ1 (1537 nm) and λ2 (1568.7 nm) were found to be 11.8264 dBm/m−1, 12.4885 dBm/m−1 and 0.0829 dBm/°C, 0.0833 dBm/°C, respectively. The experimental results show unperturbed readings with rms deviation of ±0.1801 m−1 and ±0.0826 °C, for curvature and temperature measurements, respectively, through measurement of optical power response of the sensor. With this simultaneous sensing technique, the proposed sensor can be deployed for many field applications such as nondestructive structural health monitoring of civil infrastructure.

Item Type: Article
Uncontrolled Keywords: Fiber-optic sensors, Mach-Zehnder Interferometer, Temperature sensor, Curvature sensor, Abrupt taper
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 01 Feb 2017 04:42
Last Modified: 01 Feb 2017 04:42
URI: http://shdl.mmu.edu.my/id/eprint/6384

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