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Optical Engineering • Open Access

Large range linear torsion sensor based on a suspended-core fiber loop mirror

Paper Abstract

A fiber loop mirror containing a section of high-birefringence suspended-core fiber is used for torsion sensing. The suspended-core fiber section has a triangular-shaped core with an in-circle diameter of approximately 1.8 μm. Due to its small dimensions and geometric structure, it presents high birefringence and intermodal interference simultaneously. A torsion sensitivity of 59.0  pm/deg is obtained in a very large linear range of 900 deg with a resolution of 1.2 deg.

Paper Details

Date Published: 21 January 2013
PDF: 4 pages
Opt. Eng. 52(2) 020501 doi: 10.1117/1.OE.52.2.020501
Published in: Optical Engineering Volume 52, Issue 2
Show Author Affiliations
Ricardo M. Andre, INESC Porto (Portugal)
Manuel Marques, INESC Porto (Portugal)
Pawel Mergo, Univ. Marii Curie-Sklodowskiej (Poland)
Orlando Frazão, INESC Porto (Portugal)


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