Proton-exchanged Ga0 optical waveguides in LiNbO3 using octanoic acid

E. Y B Pun; Y. O. Tse; P. S. Chung

doi:10.1109/68.91021

Proton-exchanged Ga₀ optical waveguides in LiNbO₃ using octanoic acid

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Overview

11 Scopus Citations

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Author(s)

E. Y B Pun
Y. O. Tse
P. S. Chung

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	522-523
Journal / Publication	IEEE Photonics Technology Letters
Volume	3
Issue number	6
Publication status	Published - Jun 1991

Link(s)

DOI	DOI https://doi.org/10.1109/68.91021 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0026170157&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f5cf85bb-8269-4f7c-8efc-70e8d918c8d7).html

Abstract

Low-loss proton-exchanged planar waveguides in z-cut LiNbO₃ were fabricated and characterized optically using a new proton source: octanoic acid. The waveguide exhibited a step-index profile with an index change of 0.118 measured at 0.633 μ m. The lowest waveguide propagation loss measured was 1.2 dB/cm, and it was reduced further to 0.4 dB/cm after annealing. The diffusion rate and the activation energy using this acid were found to be lower than those reported using other acids. © 1991 IEEE.