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The Compensation of Y Waveguide Temperature Drifts in FOG with the Thermal Resistor

Authors :
Ying Li Wang
Liyong Ren
Jin-Tao Xu
Kai Li Ren
Nian Bao Shi
Jian Liang
Meng Hua Kang
Source :
Advanced Materials Research. 924:336-342
Publication Year :
2014
Publisher :
Trans Tech Publications, Ltd., 2014.

Abstract

The lithium niobate integrated optical phase modulator (Y waveguide) is the key device in the digital closed-loop fiber optic gyroscope. However, the half-wave voltage of the lithium niobate changes with the environment temperature, which produces the phase bias drift and ultimately decreases the accuracy of FOG. In this manuscript, the thermal resistor is introduced in the amplification part in the driving circuits of Y waveguide. Due to the characteristic of the thermal resistor, the magnitude of driving voltage on Y waveguide changed with temperature to compensate the electro-optic effects temperature drift of the lithium niobate. This method was proved to improve the performance of fiber optic gyroscopes conveniently in experiment.

Details

ISSN :
16628985
Volume :
924
Database :
OpenAIRE
Journal :
Advanced Materials Research
Accession number :
edsair.doi...........70bed6a4550564fa6b2c56098215fcb5