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Proceedings Paper

Proton-exchanged LiTaO3 optical waveguides using cinnamic acid
Author(s): Edwin Y. B. Pun; Calvin C.K. Chan; Po Sheun Chung
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Paper Abstract

Z-cut proton-exchanged LiTaO3 optical waveguides have been fabricated using cinnamic acid and characterized optically. The diffusion constant (Do) and the activation energy (EA) were found to be 152.4 micrometers 2/h and 0.34 eV, respectively. The diffusion rate is lower than published data for other proton sources. The effect of annealing on waveguide depth increase could be accurately modeled by a power-law relationship, and the surface index change increases initially before decreasing. The maximum surface index increase for a particular exchange temperature was found to be dependent on the exchange temperature, and the higher the exchange temperature the lower the index increase.

Paper Details

Date Published: 25 August 1994
PDF: 8 pages
Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); doi: 10.1117/12.185143
Show Author Affiliations
Edwin Y. B. Pun, City Polytechnic of Hong Kong (Hong Kong)
Calvin C.K. Chan, City Polytechnic of Hong Kong (Hong Kong)
Po Sheun Chung, City Polytechnic of Hong Kong (Hong Kong)


Published in SPIE Proceedings Vol. 2212:
Linear and Nonlinear Integrated Optics
Giancarlo C. Righini; David Yevick, Editor(s)

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