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  • Received: Jun. 7, 2020

    Accepted: Aug. 11, 2020

    Posted: Sep. 25, 2020

    Published Online: Sep. 27, 2020

    The Author Email: Ming Lei (leiming1998@yeah.net)

    DOI: 10.3788/COL202018.120601

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    Kejun Shang, Ming Lei, Qiang Xiang, Yonglin Na, Lizhe Zhang, Huaiyong Yu. Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip[J]. Chinese Optics Letters, 2020, 18(12): 120601

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Chinese Optics Letters, Vol. 18, Issue 12, 120601 (2020)

Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip

Kejun Shang1,2, Ming Lei2,*, Qiang Xiang2, Yonglin Na2, Lizhe Zhang2, and Huaiyong Yu2

Author Affiliations

  • 1School of Automation, Beijing Institute of Technology, Beijing 100081, China
  • 2State Key Laboratory of Inertial Technology, Beijing Institute of Automatic Control Equipment, Beijing 100074, China

Abstract

We present a near-navigation-grade interferometric fiber optic gyroscope (IFOG) based on an integrated optical chip. The chip comprises a light source, a photodiode, and a 3 dB coupler within an area of 48 mm2. By interrogating with an integrated optical modulator and a small-diameter sensing coil, the IFOG is realized. This allows for a significant reduction in size, weight, power consumption, and cost. Preliminary performance data of a gyro prototype exhibits 0.018 deg/h bias instability.

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