MULTIPLEXED OPTICAL-FIBER STRAIN SENSING USING CROSS-CORRELATION OF SUBCARRIER INTERFEROMETRIC SPECTRA

Authors
VOLANTHEN M GEIGER H DAKIN JP
Citation
M. Volanthen et al., MULTIPLEXED OPTICAL-FIBER STRAIN SENSING USING CROSS-CORRELATION OF SUBCARRIER INTERFEROMETRIC SPECTRA, Electronics Letters, 32(3), 1996, pp. 243-244
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
32
Issue
3
Year of publication
1996
Pages
243 - 244
Database
ISI
SICI code
0013-5194(1996)32:3<243:MOSSUC>2.0.ZU;2-K
Abstract
A novel technique for evaluating strain in multiple long-length sectio ns of optical fibre is described. Sections defined by reflective marke rs are interrogated with subcarrier interferometry. Pathlength changes are monitored using cross-correlation. A resolution of 35 mu m has be en obtained over 5m sensing sections, together with inter-section cros stalk levels below -45dB.