Cavity ring-down technique for remote sensing A proof-of-concept for displacement measurement

• Type: Article in International Conference Proceedings Book
• Date: 2016

Authors

Susana Silva (Author) FCUP; marques, mb (Author) FCUP; Frazao, O (Author) FCUP

Conference proceedings International

Title: SIXTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

6th European Workshop on Optical Fibre Sensors

Univ Limerick, Limerick, IRELAND, MAY 31-JUN 03, 2016

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Other information

Authenticus ID: P-00K-KZF

DOI: 10.1117/12.2236003

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4