Passive, light intensity-independent interferometric method for fibre Bragg grating interrogation

Authors
Todd, MD Johnson, GA Chang, CC
Citation
Md. Todd et al., Passive, light intensity-independent interferometric method for fibre Bragg grating interrogation, ELECTR LETT, 35(22), 1999, pp. 1970-1971
Citations number
5
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
35
Issue
22
Year of publication
1999
Pages
1970 - 1971
Database
ISI
SICI code
0013-5194(19991028)35:22<1970:PLIIMF>2.0.ZU;2-3
Abstract
The authors describe a passive technique for sensing the strain-induced wav elength shift of a fibre Bragg grating (FBG) using a Mach-Zehnder interfero meter that utilises a 3 x 3 coupler. Laboratory data show that a resolution of similar to 10n epsilon/root Hz RMS is achievable with inherent insensit ivity to sourer intensity variations.