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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 19 — Sep. 13, 2010
  • pp: 19860–19866

Direct light-coupling to thin-film waveguides using a grating-structured GRIN lens

Thomas Fricke-Begemann and Jürgen Ihlemann  »View Author Affiliations

Optics Express, Vol. 18, Issue 19, pp. 19860-19866 (2010)

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We present a novel coupling scheme using a collimating gradient-index (GRIN) element provided with a high frequency grating to couple light from a single mode optical fiber directly to planar thin-film waveguides. The waveguide devices are used, for example, for an efficient fluorescence excitation in biosensor applications. The external coupler can be multiply reused and supersedes the conventional internal gratings. FEM simulations and experimental results show that the new technique can provide similar coupling efficiencies as common internal grating couplers.

© 2010 OSA

OCIS Codes
(230.7390) Optical devices : Waveguides, planar
(350.2770) Other areas of optics : Gratings
(280.1415) Remote sensing and sensors : Biological sensing and sensors

ToC Category:
Optical Devices

Original Manuscript: June 23, 2010
Revised Manuscript: August 3, 2010
Manuscript Accepted: August 5, 2010
Published: September 2, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Thomas Fricke-Begemann and Jürgen Ihlemann, "Direct light-coupling to thin-film waveguides using a grating-structured GRIN lens," Opt. Express 18, 19860-19866 (2010)

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