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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

Integrated Young interferometer sensor with a channel-planar composite waveguide sensing arm

Zhi-mei Qi, Shukai Zhao, Fang Chen, and Shanhong Xia  »View Author Affiliations


Optics Letters, Vol. 34, Issue 14, pp. 2213-2215 (2009)
http://dx.doi.org/10.1364/OL.34.002213


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Abstract

A simple integrated Young interferometer sensor was prepared on a glass substrate with a pair of single-mode straight channel waveguides 75 μ m apart. A tapered thin film of TiO 2 was locally deposited on one channel to form a composite waveguide sensing arm with a greatly enhanced evanescent field. With the prism-coupling method a single beam of laser light was simultaneously launched into the two channels to yield a high-contrast interference pattern. Refractive-index sensitivity of the interferometer and its response to protein adsorption were investigated by using a slit-photodetector assembly to interrogate the sensor signal. The factors affecting the fringe contrast were analyzed.

© 2009 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.6010) Integrated optics : Sensors
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: April 13, 2009
Revised Manuscript: June 10, 2009
Manuscript Accepted: June 11, 2009
Published: July 14, 2009

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

Citation
Zhi-mei Qi, Shukai Zhao, Fang Chen, and Shanhong Xia, "Integrated Young interferometer sensor with a channel-planar composite waveguide sensing arm," Opt. Lett. 34, 2213-2215 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-34-14-2213

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