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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 18 — Sep. 15, 2009
  • pp: 2733–2735

Compact optical curvature sensor with a flexible microdisk laser on a polymer substrate

M. H. Shih, K. S. Hsu, Wan Kunag, Y. C. Yang, Y. C. Wang, S. K. Tsai, Y. C. Liu, Z. C. Chang, and M. C. Wu  »View Author Affiliations

Optics Letters, Vol. 34, Issue 18, pp. 2733-2735 (2009)

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We demonstrate a chip-scale compact optical curvature sensor. It consists of a low threshold InGaAsP microdisk laser on a flexible polydimethylsiloxane polymer substrate. The curvature dependence of lasing wavelength was characterized by bending the cavity at different bending radii. The measurements showed that the lasing wavelength decreases monotonously with an increasing bending curvature. A good agreement between experiment and three-dimensional finite-difference time-domain simulation was also obtained. The sensitivity of the compact device to the bending curvature is −23.7 nm/mm from the experiment.

© 2009 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.2080) Optoelectronics : Polymer active devices
(140.3948) Lasers and laser optics : Microcavity devices
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 10, 2009
Revised Manuscript: August 4, 2009
Manuscript Accepted: August 6, 2009
Published: September 8, 2009

M. H. Shih, K. S. Hsu, Wan Kunag, Y. C. Yang, Y. C. Wang, S. K. Tsai, Y. C. Liu, Z. C. Chang, and M. C. Wu, "Compact optical curvature sensor with a flexible microdisk laser on a polymer substrate," Opt. Lett. 34, 2733-2735 (2009)

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