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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 27 — Sep. 20, 1998
  • pp: 6463–6467

Spectral measurement of the film–substrate index difference in proton-exchanged LiNbO3 waveguides

Kacem El Hadi, Vipul Rastogi, Mangalpady R. Shenoy, Krishna Thyagarajan, Marc De Micheli, and Daniel B. Ostrowsky  »View Author Affiliations


Applied Optics, Vol. 37, Issue 27, pp. 6463-6467 (1998)
http://dx.doi.org/10.1364/AO.37.006463


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Abstract

We report the spectral characterization of proton-exchanged lithium niobate (PE:LiNbO3) waveguides in terms of the variation of the refractive-index difference between the waveguiding layer and the substrate. The dispersion of the extraordinary refractive-index increase (δn e ) is measured from 405 to 1319 nm with several light sources. Two types of proton-exchanged waveguide, prepared under different conditions, are studied. These measurements should be of use in the optimization of PE:LiNbO3 waveguides for nonlinear optical applications, particularly in second-harmonic generation in the blue-green wavelength region.

© 1998 Optical Society of America

OCIS Codes
(160.3130) Materials : Integrated optics materials
(160.3730) Materials : Lithium niobate
(160.4330) Materials : Nonlinear optical materials
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(230.7390) Optical devices : Waveguides, planar
(310.2790) Thin films : Guided waves

History
Original Manuscript: September 15, 1997
Revised Manuscript: April 14, 1998
Published: September 20, 1998

Citation
Kacem El Hadi, Vipul Rastogi, Mangalpady R. Shenoy, Krishna Thyagarajan, Marc De Micheli, and Daniel B. Ostrowsky, "Spectral measurement of the film–substrate index difference in proton-exchanged LiNbO3 waveguides," Appl. Opt. 37, 6463-6467 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-27-6463

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