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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 9 — Sep. 4, 2009

Birefringent waveguide sensor using a polarizer rotating technique

Geun-Sik Son, Woo-Kyung Kim, Woo-Seok Yang, Hyung-Man Lee, Han-Young Lee, Sung-Dong Lee, Woo-Jin Jeong, Soon-Woo Kwon, Ye-na Kim, and Sang-Shin Lee  »View Author Affiliations


Optics Letters, Vol. 34, Issue 13, pp. 2045-2047 (2009)
http://dx.doi.org/10.1364/OL.34.002045


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Abstract

A birefringence measurement system is introduced to get high phase resolution for detection of low contents of biochemicals. By using a fixed quarter-wave plate and a rotating polarizer, the phase difference between two orthogonal polarizations is transformed into phase delay of output sinusoidal signal. Analyzing the output phase, birefringence change could be detected with a phase noise of 0.14°. As well as the birefringence measurement system, an optical evanescent waveguide sensor was developed. A rib-type silica waveguide overlaid with TiO2 film was fabricated, and a developed birefringence measurement technique was employed in evaluating a refractive index change on waveguide surface. For the fabricated waveguide with a 40-nm-thick TiO2 film, experiment results showed that the minimum detectable index change was 5.9×10−7.

© 2009 Optical Society of America

OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: February 25, 2009
Manuscript Accepted: May 18, 2009
Published: June 29, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Geun-Sik Son, Woo-Kyung Kim, Woo-Seok Yang, Hyung-Man Lee, Han-Young Lee, Sung-Dong Lee, Woo-Jin Jeong, Soon-Woo Kwon, Ye-na Kim, and Sang-Shin Lee, "Birefringent waveguide sensor using a polarizer rotating technique," Opt. Lett. 34, 2045-2047 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-34-13-2045

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