Share Email Print

Proceedings Paper

Polarization-switching FBG interrogator for wavelength-encoded polarization-sensitive measurements
Author(s): Philip Orr; Pawel Niewczas
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We present an FBG interrogation system incorporating a fast polarization selection mechanism that enables the independent detection of sensor responses to orthogonal polarizations. By configuring the polarization-switching subsystem in two example schemes - switching between either orthogonal linearly or circularly polarized FBG reflections - we demonstrate the system's capability to interrogate single transducers for both fiber bend and longitudinal strain, or for both magnetic field strength and temperature. With each embodiment the capability for serial multiplexing of sensors is retained. The technique allows magnetic field or bend to be measured using intrinsic multiplexable wavelength-encoded sensors, and will be applicable to a number of other polarization-dependent measurements such as electric field or transverse strain.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77537J (17 May 2011); doi: 10.1117/12.884582
Show Author Affiliations
Philip Orr, Univ. of Strathclyde (United Kingdom)
Pawel Niewczas, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?