Silver halide planar waveguides and grating couplers for middle infrared integrated optics

B. Dekel; A. Katzir

doi:10.1063/1.3527920

Silver halide planar waveguides and grating couplers for middle infrared integrated optics

B. Dekel^*, A. Katzir

^*Corresponding author for this work

School of Physics and Astronomy

Ruppin Academic Center

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We fabricated silver bromide (AgBr) planar waveguides with a thickness of ≈20 μm and designed reflective grating couplers for coupling the radiation of a tunable CO₂ laser into these waveguides. We found that the attenuation was 6-9 dB/cm. The waveguides were used as attenuated total reflection elements for the sensing of hazardous pesticides in water in concentrations higher than 25 ppm. This work will pave the way for developing integrated optical elements and circuits which are based on silver halides and which operate in a broad spectral range in the mid-IR. These will be useful as chemical sensors and as spatial elements in nulling interferometry.

Original language	English
Article number	241106
Journal	Applied Physics Letters
Volume	97
Issue number	24
DOIs	https://doi.org/10.1063/1.3527920
State	Published - 13 Dec 2010

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Silver halide planar waveguides and grating couplers for middle infrared integrated optics

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