Referenced Items are not available for this document.
The performance of a fiber grating interrogation system using an acousto-optic tunable filter (AOTF) is analyzed. An equivalent linear circuit is presented to describe the system, which tracks the wavelength of a fiber Bragg grating (FBG) sensor in a FBG sensor array. From the model, the tracking resolution of a shot-noise-limited system has been determined for both transmissive and reflective interrogation of FBGs. An optimum ratio between the bandwidths of the FBG and the AOTF has been derived. Experimental results of a tracking system are presented to validate the theoretical predictions. The theory should also be suitable for interrogation systems using other forms of tunable bandpass filters for tracking the FBG wavelength
Published in:
Lightwave Technology, Journal of
(Volume:14
,
Issue:
3
)
Date of Publication: Mar 1996
- Page(s):
- 391 - 396
- ISSN :
- 0733-8724
- INSPEC Accession Number:
- 5244622
- Digital Object Identifier :
- 10.1109/50.485598
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Mar 1996
- Sponsored by :
- IEEE Aerospace and Electronic Systems Society
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