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Proceedings Paper

Characterization of proton-exchanged planar waveguides on z-cut lithium tantalate
Author(s): Dennis K. Kan; Gar Lam Yip
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Paper Abstract

We have characterized proton-exchanged z-cut LiTaO3 planar waveguides fabricated with pyrophosphoric acid. A step index profile was assumed. Following proton-exchange the waveguides were annealed at temperatures from 300 degree(s)C to 500 degree(s)C. Interestingly, the surface index n, increased instead of decreasing. The waveguide depth d, (Delta) ns, and shape of the index profile were closely monitored throughout annealing, and the results are presented. The mechanism of the surface index increase with annealing is explained and the results support this theory.

Paper Details

Date Published: 6 April 1993
PDF: 9 pages
Proc. SPIE 1794, Integrated Optical Circuits II, (6 April 1993); doi: 10.1117/12.141883
Show Author Affiliations
Dennis K. Kan, McGill Univ. (Canada)
Gar Lam Yip, McGill Univ. (Canada)

Published in SPIE Proceedings Vol. 1794:
Integrated Optical Circuits II
Ka-Kha Wong, Editor(s)

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