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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 27 — Sep. 20, 2011
  • pp: 5315–5320

Optical stress sensor based on electro-optic compensation for photoelastic birefringence in a single crystal

Changsheng Li  »View Author Affiliations

Applied Optics, Vol. 50, Issue 27, pp. 5315-5320 (2011)

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An optical stress sensor is proposed by using a single crystal with both electro-optic and photoelastic effects. Different from previous crystal-based stress sensors, the proposed sensor is based on electro-optic compensation for stress-induced birefringence and does not need an additional quarter-wave plate or modulator, because the stress-sensing element is simultaneously used as an electro-optic compensator. Candidate sensing materials include electro-optic crystals of the 3 m symmetry group and all glass with large Kerr coefficients. A primary experiment has demonstrated that the stress-induced birefringence in lithium niobate crystal can be compensated by its electro-optic birefringence. The proposed stress sensor is compact and low cost, and it is possible to achieve closed-loop stress measurement.

© 2011 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization
(120.5475) Instrumentation, measurement, and metrology : Pressure measurement

ToC Category:
Optical Devices

Original Manuscript: May 31, 2011
Revised Manuscript: August 11, 2011
Manuscript Accepted: August 11, 2011
Published: September 16, 2011

Changsheng Li, "Optical stress sensor based on electro-optic compensation for photoelastic birefringence in a single crystal," Appl. Opt. 50, 5315-5320 (2011)

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