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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 20, Iss. 13 — Jul. 1, 1981
  • pp: 2284–2290

Design calculations for directional couplers fabricated by Ti-diffused LiNbO3 waveguides

Juichi Noda, Masaharu Fukuma, and Osamu Mikami  »View Author Affiliations


Applied Optics, Vol. 20, Issue 13, pp. 2284-2290 (1981)
http://dx.doi.org/10.1364/AO.20.002284


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Abstract

Coupling characteristics for designing a LiNbO3 directional coupler fabricated by Ti diffusion have been investigated with a modified WKB method. The present analysis is verified by comparing the refractive-index change in the Ti-diffused LiNbCO3 waveguide derived from direct measurement and coupling length calculation. Coupling length variations due to refractive-index change, diffusion length waveguide spacing, and wavelength are described. Tolerances in coupling length mismatch and propagation constant differences affecting cross talk of the directional coupler are discussed.

© 1981 Optical Society of America

History
Original Manuscript: May 31, 1980
Published: July 1, 1981

Citation
Juichi Noda, Masaharu Fukuma, and Osamu Mikami, "Design calculations for directional couplers fabricated by Ti-diffused LiNbO3 waveguides," Appl. Opt. 20, 2284-2290 (1981)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-13-2284


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