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Miniaturized integrated device and method for resonant fiber optic gyro system

A fiber optic gyroscope and integrated device technology, which is applied in the field of optical sensing and signal detection, can solve the problems of difficult integration and large size, and achieve the effects of reducing thermal noise, small size and high coupling performance

Active Publication Date: 2017-10-27
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the shortcomings of the existing resonant fiber optic gyroscope system, which is large in size and not easy to integrate, and proposes a miniaturized integration device and method for the resonant fiber optic gyroscope system

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  • Miniaturized integrated device and method for resonant fiber optic gyro system
  • Miniaturized integrated device and method for resonant fiber optic gyro system
  • Miniaturized integrated device and method for resonant fiber optic gyro system

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with embodiments and drawings, but the present invention is not limited to this.

[0027] Such as figure 1 As shown, the schematic diagram of the miniaturization system of the resonant fiber optic gyroscope includes a tunable miniaturized laser 1, an optical splitter 2, a first phase modulator 3, a second phase modulator 4, an optical ring resonator, and a photoelectric conversion module. 9. Signal processing circuit module 10; the tunable and miniaturized laser 1 is connected to the optical splitter 2, and the two outputs of the optical splitter 2 are respectively connected to the first phase modulator 3 and the second phase modulator 4. The output of the phase modulator 3 and the second phase modulator 4 are respectively connected to the optical fiber ring resonator, and the two optical fiber ring resonant outputs are respectively connected to the photoelectric conversion module 9, and the photoelectri...

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Abstract

The invention discloses a miniaturized integrated device of a resonant mode fiber-optic gyroscope system and a method thereof. The device comprises a tunable miniaturized laser, an optical splitter, a first phase modulator, a second phase modulator, an optical annular resonant cavity, a photovoltaic conversion module, a signal processing circuit module and an integrated packaging member. By selecting and designing optical apparatuses and hardware circuits which are small in package and high in performance: the tunable miniaturized laser, a polished coupler, a large half-wave voltage driven short waveguide lithium niobate phase modulator and a driving circuit of the modulator and the photovoltaic conversion module based on an InGaAs photodiode, and by adopting design of a packaging member layered and isolated by a light source and the optical annular resonant cavity and a design method of mounting the optical apparatuses and the optical annular resonant cavity in a manner of being internally tangent with a hem, the miniaturized integration of the resonant mode fiber-optic gyroscope system is realized.

Description

Technical field [0001] The invention relates to the technical field of optical sensing and signal detection, in particular to a miniaturized integrated device and method for a resonant fiber optic gyroscope system. Background technique [0002] Resonator Fiber Optic Gyro (R-FOG) is a high-precision inertial sensor that uses the optical Sagnac effect to detect rotation. Compared with traditional mechanical gyroscopes, R-FOG has the characteristics of small size, simple structure, long life and high precision. Compared with Interferometer Fiber Optic Gyro (I-FOG), R-FOG can theoretically use a much shorter fiber length to achieve the same accuracy as I-FOG. [0003] However, in the current R-FOG system, the volume of each module device used is relatively large, which results in a large R-FOG system as a whole, and it is difficult to achieve miniaturization and integration, which prevents the gyro from achieving final applications. Summary of the invention [0004] The invention aims...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/72
CPCG01C19/727
Inventor 应迪清毛建敏李强金仲和
Owner ZHEJIANG UNIV
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