Temperature independent torsion sensor using a high-birefringent Sagnac loop interferometer

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Silva, RM (Author) Other; Ferreira, MS (Author) Other; Frazao, O (Author) FCUP

Journal

Title: Optics Communications

Vol. 285

Pages: 1167-1170

ISSN: 0030-4018

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 30 Citations

Scopus - 32 Citations

Other information

Authenticus ID: P-002-C39

DOI: 10.1016/j.optcom.2011.11.119

Abstract (EN): A high-birefringent (Hi-Bi) Sagnac loop interferometer for torsion measurement is demonstrated. The sensing head is formed by a section of standard single mode fiber spliced between the output ports of a Hi-Bi coupler at 3 dB. The sensing configuration is characterized in torsion, temperature and strain. The results obtained indicate the viability of a torsion sensor independent of the temperature and strain cross-sensitivity effects. Additionally, in the proposed configuration all measurements are performed without the need of a polarization controller, a device most often required in standard Sagnac loops applied for sensing.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4