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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 31 — Nov. 1, 1990
  • pp: 4583–4589

Miniaturized spectrometer employing planar waveguides and grating couplers for chemical analysis

Don S. Goldman, P. L. White, and N. C. Anheier  »View Author Affiliations


Applied Optics, Vol. 29, Issue 31, pp. 4583-4589 (1990)
http://dx.doi.org/10.1364/AO.29.004583


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Abstract

Polymeric and metal oxide planar waveguides were used to demonstrate the potential of a miniature spectrometer. Multiwavelength light was transmitted through the substrate and coupled into the waveguide through a diffraction grating located at the substrate/waveguide interface. A second diffraction grating spatially dispersed the light propagated through the waveguide into component wavelengths for rapid analysis with a photodiode array detector. These results suggest that planar waveguides can be used to perform attenuated total internal reflection measurements in the visible and near-IR regions for chemical analysis of weak vibrational overtones and combination modes with effective path lengths of several millimeters.

© 1990 Optical Society of America

History
Original Manuscript: February 20, 1990
Published: November 1, 1990

Citation
Don S. Goldman, P. L. White, and N. C. Anheier, "Miniaturized spectrometer employing planar waveguides and grating couplers for chemical analysis," Appl. Opt. 29, 4583-4589 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-31-4583

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