Strain and temperature characterisation of sensing head based on suspended-core fibre in Sagnac interferometer

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Frazao, O (Author) Other; Baptista, JM (Author) Other; Santos, JL (Author) FCUP; Kobelke, J (Author) Other; Schuster, K (Author) Other

Journal

Title: Electronics Letters

Vol. 44

Pages: 1455-U117

ISSN: 0013-5194

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 22 Citations

Other information

Authenticus ID: P-003-T9N

DOI: 10.1049/e1:20081431

Abstract (EN): The study of the strain and temperature characteristics of a sensing head based on a four-hole suspended-core fibre in a Sagnac interferometric configuration is reported. It is shown that, for the case of using an uncoated suspended-core fibre, a relatively large strain sensitivity is obtained (similar or equal to 1.94 pm/mu epsilon), while the temperature sensitivity is small (similar or equal to 0.29 pm/degrees C), pointing to a temperature-independent strain sensor. When the fibre is coated, the strain sensitivity remains essentially the same, while the temperature sensitivity becomes much larger and with a value that changes with the localisation of the temperature variation range.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2