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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 17 — Jun. 10, 1999
  • pp: 3714–3719

Narrow-band Resonant Grating Waveguide Filters Constructed with Azobenzene Polymers

Raymond J. Stockermans and Paul L. Rochon  »View Author Affiliations


Applied Optics, Vol. 38, Issue 17, pp. 3714-3719 (1999)
http://dx.doi.org/10.1364/AO.38.003714


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Abstract

Resonant grating waveguide structures were used to fabricate narrow-bandwidth optical filters. Azopolymer films were deposited on top of slab waveguides, and surface relief gratings were optically inscribed on them to be used as couplers. This technique is a simple one-step process and produces efficient gratings with high accuracy. Sharp resonant peaks are observed in the transmission and the reflection spectra of these structures. The thickness and the index of refraction of the waveguide can be accurately determined from these resonances by use of modal theory. These parameters are then used in the design of an optical filter. Bandwidths of less than 1 nm and a decrease in transmitted signal of 60% are reported. Measurement of these values was limited by the divergence of the probe beam.

© 1999 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(130.2790) Integrated optics : Guided waves
(230.3120) Optical devices : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar

Citation
Raymond J. Stockermans and Paul L. Rochon, "Narrow-band Resonant Grating Waveguide Filters Constructed with Azobenzene Polymers," Appl. Opt. 38, 3714-3719 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-17-3714

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