Temperature profile measurements within a chirped fiber Bragg grating using a Fourier transform technique

Anbhawa Nand; Daniel J. Kitcher; Scott A. Wade; Stephen F. Collins; Gregory W. Baxter

doi:10.1117/12.624247

23 May 2005 Temperature profile measurements within a chirped fiber Bragg grating using a Fourier transform technique

Anbhawa Nand, Daniel J. Kitcher, Scott A. Wade, Stephen F. Collins, Gregory W. Baxter

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624247
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

The use of reflected power spectra arising from a chirped fiber Bragg grating (CFBG) to extract a nonuniform temperature distribution along the grating has been investigated. The technique uses a discrete Fourier transform (FFT) in which the measured spectrum of the CFBG due to a localised temperature change was simulated using the FFT grating design model. The model operated on the reference spectrum and hypothesis temperature distributions, T(z), to generate a spectrum representative of a localised temperature disturbance. The simulated spectrum was fitted to the measured spectrum using a three-parameter disturbance function operating on position, width and amplitude of temperature change. The rms deviation of the applied value for position of a localised temperature change was 0.14 mm.

Citation Download Citation

Anbhawa Nand, Daniel J. Kitcher, Scott A. Wade, Stephen F. Collins, and Gregory W. Baxter "Temperature profile measurements within a chirped fiber Bragg grating using a Fourier transform technique", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624247

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available