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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. 3, Iss. 11 — Oct. 22, 2008

Optofluidic 1×4 switch

Alex Groisman, Steve Zamek, Kyle Campbell, Lin Pang, Uriel Levy, and Yeshaiahu Fainman  »View Author Affiliations


Optics Express, Vol. 16, Issue 18, pp. 13499-13508 (2008)
http://dx.doi.org/10.1364/OE.16.013499


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Abstract

An optofluidic 1×4 switch is designed, fabricated, and tested. The switch is based on a blazed diffraction grating imprinted onto silicone elastomer at the bottom of a microfluidic channel that is filled with liquids with different refractive indices. When the condition of a diffraction maximum is met, the laser beam incident on the grating is deflected by an angle proportional to the refractive index mismatch between the elastomer and the liquid in the channel. The switch was tested using four different aqueous salt solutions generating 0th to 3rd orders of diffraction. The insertion loss was <2.5dB, the extinction ratio was >9.8dB, and the response time was 55 ms. The same basic design can be used to build optofluidic switches with more than 4 outputs.

© 2008 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(220.4880) Optical design and fabrication : Optomechanics
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: June 25, 2008
Revised Manuscript: August 5, 2008
Manuscript Accepted: August 8, 2008
Published: August 18, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Alex Groisman, Steve Zamek, Kyle Campbell, Lin Pang, Uriel Levy, and Yeshaiahu Fainman, "Optofluidic 1x4 Switch," Opt. Express 16, 13499-13508 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-18-13499


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