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Optics Letters

Optics Letters


  • Vol. 26, Iss. 20 — Oct. 15, 2001
  • pp: 1553–1555

Graded-index mid-infrared planar optical waveguides made from silver halides

B. Dekel and A. Katzir  »View Author Affiliations

Optics Letters, Vol. 26, Issue 20, pp. 1553-1555 (2001)

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Since the index of refraction of AgClxBr1-x (x<1) is higher than that of AgCl, by diffusing Br- ions into AgCl it was possible to control the index and thus obtain planar waveguides made from silver chlorobromide (AgClBr) on a AgCl substrate. Silver halides are transparent in the mid IR, and it was therefore possible to characterize the waveguides by transmission of 10.6–μm CO2-laser radiation through them. In a typical case, the thickness was optically measured and was found to be 65μm , and the propagation loss was 16 dB/cm. The output-beam profile distribution was determined experimentally and found to be well correlated with a numerical analysis simulation based on a ray-tracing model of the eikonal equation. Planar waveguides that are transparent in the mid IR will likely be useful in numerous applications.

© 2001 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(160.3220) Materials : Ionic crystals
(230.7390) Optical devices : Waveguides, planar

B. Dekel and A. Katzir, "Graded-index mid-infrared planar optical waveguides made from silver halides," Opt. Lett. 26, 1553-1555 (2001)

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