Light transceiving integrated device applied to fiber sensing

A technology of optical fiber sensing and optical transceiver, which is applied in optics, optical components, Sagnac effect gyroscopes, etc., can solve the problems of large volume of light emitting and receiving devices and difficulty in miniaturizing optical fiber gyroscopes, and achieve reduction The number of fiber splicing points, the improvement of reciprocity and stability, and the effect of eliminating inherent loss

Active Publication Date: 2010-10-06
BEIHANG UNIV +1
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Problems solved by technology

[0003] In the prior art, the light source and the detector in the FOG generally realize the optical input and output of the Sagnac interferometer through a 2×2 fiber coupler, but this technical solution has an inherent loss o...

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  • Light transceiving integrated device applied to fiber sensing
  • Light transceiving integrated device applied to fiber sensing
  • Light transceiving integrated device applied to fiber sensing

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Embodiment Construction

[0025] The embodiment of the present invention provides an optical transceiver integrated device applied to optical fiber sensing, which can realize the integration and packaging of various discrete components in a single module, so that the miniaturization of the optical fiber gyroscope is possible; at the same time, the optical fiber gyroscope system can be reduced The number of fiber fusion splices can improve the optical coupling efficiency, and can eliminate the inherent loss of 6db in the existing system, and improve the reciprocity and stability of the fiber optic gyroscope.

[0026] In order to better describe the embodiments of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings, such as figure 1 Shown is a schematic structural diagram of an integrated optical transceiver according to an embodiment of the present invention, figure 1 It includes light source (SLD), photodetector, polarization...

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Abstract

The embodiment of the invention provides a light transceiving integrated device applied to fiber sensing. The light transceiving integrated device comprises a light source, a photoelectric detector, a polarizing beam splitter, a half-wave plate, a Faraday rotator, a reflector and a lens, wherein the polarization state of emergent light emitted by the light source is regulated through the half-wave plate and the Faraday rotator so that the emergent light is changed between parallel transmission light and vertical reflected light; and the emergent light after the polarizing regulation enters tail fibers of polarization maintaining fibers through the polarizing beam splitter, the reflector and the lens, and the emergent light is received through the photoelectric detector and returned from an interferometer sensor. The structure and the light path process can realize integration and encapsulation of discrete components in a single module, reduce the fiber welding point number in a fiber gyro system, eliminate the 6db inherent loss in the conventional system, and improve the reciprocity and stability of a fiber gyro.

Description

Technical field [0001] The invention relates to the field of optical fiber sensing, in particular to an integrated optical transceiver device applied to optical fiber sensing. Background technique [0002] At present, the miniaturization technology of fiber optic gyroscope (FOG) is a high and new technology pursued by many countries and scientific research institutions in the world. The miniaturization technology of fiber optic gyroscope in the existing technology is mainly a compact integrated optical FOG. Types of FOG light sources, detectors, couplers and the key technology of highly integrated connection optical path-transceiver integrated module, naturally become the key to FOG miniaturization. [0003] In the prior art, the light source and detector in the FOG generally realize the optical input and output of the Sagnac interferometer through a 2×2 fiber coupler, but this technical solution has an inherent loss of 6db, and this traditional The optical transceiver structure o...

Claims

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Application Information

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IPC IPC(8): G01C19/72G02B27/28
Inventor 冯丽爽刘弘度王坤博王爱民周震刘惠兰
Owner BEIHANG UNIV
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