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Optics Letters

Optics Letters


  • Vol. 24, Iss. 8 — Apr. 15, 1999
  • pp: 525–527

Integrated optical Bragg-grating-based chemical sensor on a curved input edge waveguide structure

Thomas M. Butler, Eishi Igata, Steve J. Sheard, and Neil Blackie  »View Author Affiliations

Optics Letters, Vol. 24, Issue 8, pp. 525-527 (1999)

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A novel integrated optical chemical sensor based on a surface-relief Bragg grating in a waveguide with a curved input edge, and coated with a chemically sensitive polysiloxane cladding, is described. The curved edge provides a mechanism within the device fabrication that allows for alignment of the input beam to the grating to achieve Bragg scattering. As proof of principle, a low-parts-in-106 toluene-vapor sensor with a fast response time is demonstrated.

© 1999 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices
(130.6010) Integrated optics : Sensors
(230.7390) Optical devices : Waveguides, planar

Thomas M. Butler, Eishi Igata, Steve J. Sheard, and Neil Blackie, "Integrated optical Bragg-grating-based chemical sensor on a curved input edge waveguide structure," Opt. Lett. 24, 525-527 (1999)

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