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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 6 — Mar. 15, 1980
  • pp: 937–943

Light deflector using a chalcogenide amorphous loaded LiNbO3 waveguide

Sakae Zembutsu, Juichi Noda, and Hiroshi Iwasaki  »View Author Affiliations


Applied Optics, Vol. 19, Issue 6, pp. 937-943 (1980)
http://dx.doi.org/10.1364/AO.19.000937


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Abstract

A large-angle Bragg deflector has been demonstrated, utilizing the photoinduced refractive-index change in an As-Se-S-Ge amorphous film loaded on a Ti-diffused LiNbO3 waveguide. Modal analysis shows that optical fields and effective indices in a LiNbO3 wavelength are affected strongly through the index change in the amorphous overlayer. Coupling coefficient and interaction length of the deflector are derived analytically by the coupled wave theory. Interaction length becomes short rapidly with increasing the refractive-index change of the grating or the loaded film thickness. An almost 40° deflection has been achieved experimentally with a 0.7-μm grating pitch and 1-mm interaction length.

© 1980 Optical Society of America

History
Original Manuscript: October 6, 1979
Published: March 15, 1980

Citation
Sakae Zembutsu, Juichi Noda, and Hiroshi Iwasaki, "Light deflector using a chalcogenide amorphous loaded LiNbO3 waveguide," Appl. Opt. 19, 937-943 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-6-937

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