Demodulation of two time-multiplexed fibre Bragg sensors using source spectral characteristics

• Type: Article in International Scientific Journal
• Date: 1997

Authors

Ferreira, LA (Author) Other; Dias, PC (Author) Other; Santos, JL (Author) FCUP

Journal

Title: Journal of Optics A: Pure and Applied Optics

Vol. 6

Pages: 717-726

ISSN: 1464-4258

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 6 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-001-AE6

DOI: 10.1088/0963-9659/6/6/014

Abstract (EN): A passive all-fibre technique for fibre Bragg grating wavelength shift detection which has been discussed previously is used here for the demodulation of two Bragg sensors placed in a tree topology and addressed in time. The scheme involves a light source with a particular spectral profile that allows the direct tracking of the Bragg wavelength shifts, providing satisfactory resolution over a large dynamic range and a direct application in demultiplexing fibre sensing systems. Experimental results are presented relative to the measurement of static and dynamic strain, as well as temperature.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10