| Optical Engineering |
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| A novel three-component hybrid-integrated optical accelerometer based on a Mach-Zehnder interferometer with a LiNbO3 photoelastic waveguide |
| Dong-lin TANG, Xiao-dong ZHANG, Guang-hui ZHAO, Zhi-yong DAI, Xin LAI, Feng GUO |
| MOE Key Laboratory for Petroleum-Gas Equipment, Southwest Petroleum University, Chengdu 610500, China; School of Optoelectronic Information, University of Electronic Science and Technology, Chengdu 610054, China |
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Abstract An investigation of the properties of a LiNbO3 photoelastic waveguide via the acceleration-induced effect is presented. A novel three-component hybrid-integrated optical accelerometer based on a Mach-Zehnder interferometer with a LiNbO3 photoelastic waveguide has been designed, which is capable of detecting seismic acceleration in high-accuracy seismic exploration. The Mach-Zehnder interferometer was successfully fabricated and a lighting test used to check its quality. The frequency response characteristic of the accelerometer was measured. The accelerometer with a resonant frequency of 3549 Hz was demonstrated to show good linear frequency responding characteristics in the range of 100~3000 Hz. The accelerometer also shows good stability and consistency. Experimental results indicate that the outputs of the on- and cross-axis are 147 and 21.3 mV, respectively.
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Received: 05 June 2008
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