Quasi-distributed displacement sensor for structural monitoring using a commercial OTDR

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Pinto, NMP (Author) Other; Frazao, O (Author) Other; Baptista, JM (Author) Other; Santos, JL (Author) FCUP

Journal

Title: Optics and Lasers in Engineering

Vol. 44

Pages: 771-778

ISSN: 0143-8166

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 32 Citations

Scopus - 35 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-JB2

DOI: 10.1016/j.optlaseng.2005.07.009

Abstract (EN): A quasi-distributed displacement sensor for structural monitoring using an optical time domain reflectometer is demonstrated. Four displacement sensing heads are placed along a standard single mode optical fibre in several locations with different intervals. Their configurations introduce power loss through the decrease of their fibre loop radius when displacement is applied. The decrease of the light intensity with displacement variation is reported. Losses of 9 dB for a similar to 120 mm displacement with a sensitivity of similar to 0.027 dB/mm are reported. The quasi-distributed configuration is able to address sensors with similar to 1 m distance resolution between them.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8