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Proceedings Paper

Cavity ring-down technique for remote sensing: a proof-of-concept for displacement measurement
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Paper Abstract

This work demonstrates the viability of using a cavity ring-down technique (CRD) for remote sensing. A conventional CRD configuration is used where and optical circulator is added inside the fibre loop to couple 20 km of optical fibre with a gold mirror at its end with the purpose of remote sensing. As a proof-of-concept, an intensity sensor based on an eight-figure configuration is used at the end of the 20 km of fibre for displacement sensing. In this case, a commercial OTDR is used as modulated light source to send impulses down to the fibre ring.

Paper Details

Date Published: 30 May 2016
PDF: 4 pages
Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991615 (30 May 2016); doi: 10.1117/12.2236003
Show Author Affiliations
Susana Silva, INESC TEC (Portugal)
Univ. do Porto (Portugal)
M. B. Marques, INESC TEC (Portugal)
Univ. do Porto (Portugal)
O. Frazão, INESC TEC (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 9916:
Sixth European Workshop on Optical Fibre Sensors
Elfed Lewis, Editor(s)

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