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Index profile of proton-exchanged waveguides in lithium niobate using cinnamic acid

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3 Author(s)
Pun, E.Y.B. ; Dept. of Electr. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong ; Loi, K.K. ; Chung, P.S.

Proton-exchanged optical waveguides have been fabricated in z-cut LiNbO3 using cinnamic acid. The index profiles of these waveguides were found to be different from those obtained using other organic acids, and could be modelled accurately by a truncated-parabolic function. The maximum surface index increase is 0.141 and is the largest value reported for proton exchange process using organic acids.

Published in:
Electronics Letters  (Volume:27 ,  Issue: 14 )

Date of Publication: 4 July 1991

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