Polarimetric Er3+-doped fiber DFB laser sensor for differential pressure and force measurements

Kringlebotn, J.T., Loh, W.H. and Laming, R.I. (1996) Polarimetric Er3+-doped fiber DFB laser sensor for differential pressure and force measurements. Optics Letters, 21, (22), 1869-1871. (doi:10.1364/OL.21.001869).


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We propose and demonstrate a polarimetric Er3+-doped fiber DFB laser sensor where a transversely applied force along the fiber laser induces a birefringence giving rise to a change in the beat-frequency between the two orthogonally-polarized laser modes. We measure a sensitivity of approximately 9.6GHz(N/mm), a wide dynamic range with stable two-mode operation for frequency separations up to 50GHz, and very high sensor resolution owing to the narrow beat frequency bandwidth of <10kHz. The temperature sensitivity is primarily dominated by the temperature dependence of the inherent birefringence, which was measured to be -130kHz/°C. The sensor allows independent pressure/force and temperature measurements.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1364/OL.21.001869
ISSNs: 0146-9592 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78069
Accepted Date and Publication Date:
Date Deposited: 11 Mar 2010
Last Modified: 31 Mar 2016 13:12
URI: http://eprints.soton.ac.uk/id/eprint/78069

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