Edge Based Fiber Bragg Grating Interrogator

Shrivastava, Deepa and Bhatngar, Randhir and Kumar, Asha and Tiwari, Umesh and Jain, S.C. and Kapur, Pawan (2012) Edge Based Fiber Bragg Grating Interrogator. Journal of the Instrument Society of India, 42 (4). pp. 217-219. ISSN 0970-9983

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Fiber Bragg Grating (FBG) interrogation system based on spectral edge characteristics of Chirped Fiber Bragg Grating (CFBG) is reported to measure temperature of hot water bath. We use in-house fabricated FBG and CFBG as an edge filter in developing FBG interrogator. The CFBG transmission profile at rising and falling edge varies linearly with wavelength. The Bragg wavelength of FBG as a function of temperature forms the basis of temperature measurement. The ratio of optical intensity of Bragg wavelength due to edge slope of CFBG and intensity of the Bragg wavelength vs. temperature of water bath observed is linear. Using the slope of linear curve, the temperature measurement resolution of 0.30C with temperature range of 300C was achieved.

Item Type: Article
Uncontrolled Keywords: ASE; CFBG; FBG; Interrogation Techniques
Subjects: CSIO > Photonics Instrumentation
Divisions: Photonics Instrumentation
Depositing User: Ms. J Shrivastav
Date Deposited: 16 Dec 2013 12:43
Last Modified: 16 Dec 2013 12:43
URI: http://csioir.csio.res.in/id/eprint/372

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