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Proceedings Paper

Design of quasi-velocity-matched LiTaO3 phase modulator
Author(s): Yue Wang; Jianhong Shi; Jialing Yang; Xianfeng Chen; YuXing Xia
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Paper Abstract

In common electro-optic modulators (EO), the inherent velocity mismatching between the optical wave and microwave is the major factor hampering efficient modulation. In this paper, we briefly compare periodically reversed electrode and domain reversal scheme (two ways of achieving quasi-velocity- matching), then we give the design principle of the EO modulator using domain reversal scheme. At last, we conclude that the bulk LiTaO3 EO modulator can obtain quasi- velocity-matching at special frequency and make the modulation index increase proportionally to the interaction length. As an experiment, we use a 1.06 micrometer laser as a light source and a modulating microwave source at 6 GHz (16 W). We can expect that we will get at least 3.0 rads of modulation index.

Paper Details

Date Published: 3 October 2000
PDF: 4 pages
Proc. SPIE 4220, Advanced Photonic Sensors: Technology and Applications, (3 October 2000); doi: 10.1117/12.401694
Show Author Affiliations
Yue Wang, Shanghai Jiao Tong Univ. (China)
Jianhong Shi, Shanghai Jiao Tong Univ. (China)
Jialing Yang, Shanghai Jiao Tong Univ. (China)
Xianfeng Chen, Shanghai Jiao Tong Univ. (China)
YuXing Xia, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 4220:
Advanced Photonic Sensors: Technology and Applications
Jinfa Tang; Chao-Nan Xu; Haizhang Li, Editor(s)

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