Paper Title:

Research on Transmission Loss of Optical Waveguide in Three-Component Acceleration Seismic Geophone

Periodical Applied Mechanics and Materials (Volumes 143 - 144)
Main Theme Electrical Information and Mechatronics and Applications
Edited by Xudong Wang, Baoyu Xu and Shaobo Zhong
Pages 644-648
DOI 10.4028/www.scientific.net/AMM.143-144.644
Citation De En et al., 2011, Applied Mechanics and Materials, 143-144, 644
Online since December, 2011
Authors De En, Jie Yu Feng, Ning Bo Zhang, Ning Ning Wang, Xiao Bin Wang
Keywords LiNbO3, Optical Waveguide, Three-Component, Transmission Loss
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Abstract

The optical waveguides are produced in LiNbO3 substrate of three-component acceleration seismic geophone by lithography. Three-component acceleration seismic geophone detects changes in the external acceleration by detecting phase changes in the optical waveguides. The performance of optical waveguide directly affects the performance of three-component acceleration seismic geophone. Therefore, it is critical to measure and reduce the transmission loss of waveguides. The advantages and disadvantages of LiNbO3 crystal are introduced. The production process of Ti:LiNbO3 optical waveguide and its performance are presented. Some information about the types of transmission loss of optical waveguide and the measurement methods of optical waveguide loss are provided.