Acta Photonica Sinica, Volume. 47, Issue 5, 506005(2018)
Magnetic-temperature Coupling Effect of a Fiber Optic Gyroscope
A theory for magnetic-temperature coupling effect generated in a Fiber Optic Gyroscope (FOG) under the combined action of magnetic and temperature fields was proposed. The magnetic-temperature coupling in FOG originates from the interaction of the magnetic field, fiber twist, birefringence caused by thermal stress, and the intrinsic and bending birefringence of the fiber. The cross-coupling changes with temperature. When the polarization maintaining fiber has a diameter of 250 μm, beat length of 3 mm, length of 1 600 m, twist rate of 1 rad/m, and optical source wave length of 1550 nm, the maxim degree of magnetic-thermal coupling generated by a 1 mT radial magnetic field within the temperature range of 20℃ to 60℃ is 6.796%.
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CHEN Yi-ping, LIANG Cui, ZHANG Deng-wei, YANG Jian-hua, CHE Shuang-liang, LIU Cheng. Magnetic-temperature Coupling Effect of a Fiber Optic Gyroscope[J]. Acta Photonica Sinica, 2018, 47(5): 506005
Received: Jan. 19, 2018
Accepted: --
Published Online: Sep. 7, 2018
The Author Email: Yi-ping CHEN (cyp0901@zju.edu.cn)