Embedded dual fiber Bragg grating sensor for simultaneous measurement of temperature and load (strain) with enhanced sensitivity.

Mondal, S.K. and Mishra, Vandana and Tiwari, Umesh and Poddar, G.C. and Singh, Nahar and Jain, S.C. and Sarkar, S.N. and Kapur, Pawan (2009) Embedded dual fiber Bragg grating sensor for simultaneous measurement of temperature and load (strain) with enhanced sensitivity. Microwave and Optical Technology Letters, 51 (7). pp. 1621-1624. ISSN ISSN: 0895-2477 ISSN (Online): 1098-2760

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Abstract

An embedded dual fiber Bragg gratings sensor for simultaneous measurement of temperature and load (strain) is proposed and experimentally demonstrated. Two nearly identical gratings are mounted on opposite side of an arch-shaped steel strip. The grating in concave and convex position experiences equal blue and red shift, respectively, due to bending of the strip which is exploited in temperature and load (strain) discrimination. The temperature and load (strain) sensitivity of the sensor improves to 28.5 pm/°C and 2.8 pm/g (2.6 pm/με). The sensor can measure temperature and load (strain) accurately with small error of ±1°C and ±1 g, respectively. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1621–1624, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24439 Poddar,1 Nahar Singh,1 ,1 ,1,2 and

Item Type: Article
Uncontrolled Keywords: Fiber Bragg grating (FBG);sensor;strain and temperature discrimination; embedded FBG; grating sensitivity
Subjects: CSIO > Photonics Instrumentation
Divisions: Photonics Instrumentation
Depositing User: Ms T Kaur
Date Deposited: 22 Jan 2012 14:35
Last Modified: 16 Apr 2012 10:08
URI: http://csioir.csio.res.in/id/eprint/227

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