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Proceedings Paper

Experimental studies of proton-exchanged waveguides in lithium niobate using toluic acid
Author(s): Edwin Y. B. Pun; Kwok Kwong Loi; Po Sheun Chung
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Paper Abstract

Low-loss proton-exchanged planar waveguides have been fabricated in z-cut LiNb03 using a new organic proton source: toluic acid. These waveguides exhibit a step refractive index profile with a surface index increase of 0.124 measured at 0.633/mm. The propagation loss was typically around 1 dB/cm. The diffusion constant D0 and the activation energy Q for the proton exchange process were found to be 7.02 x107 mm2/hr and 75.58 kJ/mol, respectively.

Paper Details

Date Published: 1 December 1991
PDF: 7 pages
Proc. SPIE 1583, Integrated Optical Circuits, (1 December 1991); doi: 10.1117/12.50876
Show Author Affiliations
Edwin Y. B. Pun, Chinese Univ. of Hong Kong (Hong Kong China)
Kwok Kwong Loi, Chinese Univ. of Hong Kong (Hong Kong China)
Po Sheun Chung, City Polytechnic of Hong Kong (Hong Kong China)

Published in SPIE Proceedings Vol. 1583:
Integrated Optical Circuits
Ka Kha Wong, Editor(s)

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