Strain and temperature discrimination technique by use of A FBG written in erbium doped fiber

Tiwari, Umesh and Thyagarajan, Krishna and Shenoy, M.R. (2014) Strain and temperature discrimination technique by use of A FBG written in erbium doped fiber. Optik - International Journal for Light and Electron Optics, 125 (1). pp. 235-237. ISSN 0030-4026

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

We propose and demonstrate strain and temperature discrimination technique using a single fiber Bragg grating (FBG) written in the core of an erbium doped fiber. We observed that amplified spontaneous emission power varying linearly from the erbium doped fiber with temperature which determines temperature changes and strain is estimated by subtracting the wavelength shift due to temperature change, from the measured shift corresponding to the dip in the transmission spectrum of the FBG. A simple and compact FBG sensor is presented with improved rms errors of 21.2 μɛ and 1 °C over ranges of 0–800 μɛ and 40–95 °C, respectively. The sensor is shown to have strain and temperature sensitivity of 0.8 pm/μɛ and 12 pm/°C.

Item Type: Article
Uncontrolled Keywords: Fiber Bragg gratings; Fiber optics components; Erbium doped fiber; Sensors
Subjects: CSIO > Photonics Instrumentation
Divisions: Photonics Instrumentation
Depositing User: Ms. Jyotsana
Date Deposited: 26 Jun 2015 10:30
Last Modified: 26 Jun 2015 10:30
URI: http://csioir.csio.res.in/id/eprint/563

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