FIBER LASER SOURCE ANALYZER FOR BRAGG GRATING SENSOR ARRAY INTERROGATION

Citation
Ga. Ball et al., FIBER LASER SOURCE ANALYZER FOR BRAGG GRATING SENSOR ARRAY INTERROGATION, Journal of lightwave technology, 12(4), 1994, pp. 700-703
Citations number
10
Categorie Soggetti
Optics
ISSN journal
07338724
Volume
12
Issue
4
Year of publication
1994
Pages
700 - 703
Database
ISI
SICI code
0733-8724(1994)12:4<700:FLSAFB>2.0.ZU;2-1
Abstract
This paper reports on the application of a calibrated, narrow-linewidt h, single-frequency, continuously wavelength-tunable erbium fiber lase r to the interrogation of a multipoint Bragg grating temperature senso r. The fiber laser was wavelength-tuned, through an array of three fib er Bragg grating sensors, to determine the temperature of each individ ual grating. The temperatures of the three gratings were measured as a function of grating Bragg wavelength. The minimum wavelength resoluti on, due to electro-mechanical repeatability, of the fiber laser source /analyzer was determined to be approximately 2.3 picometers. This corr esponds to a frequency resolution of approximately 300 MHz.