Search

CN-122015798-A - Triaxial receiving and transmitting assembly for fiber-optic gyroscope

CN122015798ACN 122015798 ACN122015798 ACN 122015798ACN-122015798-A

Abstract

The invention discloses a triaxial transceiver component for an optical fiber gyroscope, and particularly relates to the technical field of optical fiber gyroscopes. According to the invention, through the structures such as the shell, the laser, the three-way detector and the array tail fiber component, the light source detector is integrated, so that the SWaP comprehensive performance index challenges faced by the middle-low precision optical fiber gyroscope can be effectively reduced, on one hand, the complex connection and layout among a plurality of independent components are reduced through the integration of the light source detector, the internal structure of the optical fiber gyroscope is more compact, the overall size and weight are remarkably reduced, on the other hand, the number of connection points and components which are likely to fail is reduced through the integration design, the stability and reliability of products are improved, the maintenance cost and the power consumption are reduced, and the requirements of the Internet of things on low-cost and reliable motion sensing nodes are met.

Inventors

  • CUI HONGLIANG
  • ZHANG DECHUAN

Assignees

  • 武汉海飞通光电子科技有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1. The invention discloses a triaxial transceiver component for an optical fiber gyroscope, and particularly relates to the technical field of optical fiber gyroscopes. According to the invention, through the structures such as the shell, the laser, the three-way detector and the array tail fiber component, the light source detector is integrated, so that the SWaP comprehensive performance index challenges faced by the middle-low precision optical fiber gyroscope can be effectively reduced, on one hand, the complex connection and layout among a plurality of independent components are reduced through the integration of the light source detector, the internal structure of the optical fiber gyroscope is more compact, the overall size and weight are remarkably reduced, on the other hand, the number of connection points and components which are likely to fail is reduced through the integration design, the stability and reliability of products are improved, the maintenance cost and the power consumption are reduced, and the requirements of the Internet of things on low-cost and reliable motion sensing nodes are met.
  2. 2. A triaxial transceiver module for among fiber-optic gyroscope, includes casing (1), its characterized in that casing (1) top is provided with extension frame (2), it is provided with mounting hole (3) to run through on extension frame (2), go up extension frame (2) and casing (1) structure as an organic whole, casing (1) bottom is provided with down extension frame (4), run through on extension frame (4) and be provided with down mounting hole (5), down extension frame (4) and casing (1) structure as an organic whole, inside fixed mounting of casing (1) (1) has TIA circuit (6), TIA circuit (6) one side is provided with laser instrument (7), laser instrument (7) fixed mounting is inside casing (1), laser instrument (7) bottom is provided with three-way detector (8), three-way detector (8) fixed mounting is inside casing (1), three-way detector (8) set up in one side that is close to laser instrument (6), TIA circuit (6) are provided with optical path array (10) side, TIA circuit (6) are kept away from to be provided with optical path assembly (10).
  3. 3. The triaxial transceiver module for a fiber optic gyroscope according to claim 1, wherein the size of the PLC optical path (10) is 410mm, and the diameter of the equivalent energy distribution of the fiber core of the PLC optical path (10) is 6m.
  4. 4. A triaxial transceiver assembly for use in a fiber optic gyroscope according to claim 1, wherein the PLC optical path (10) includes a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, MMI A, MMI B and three MMI Cs.
  5. 5. A triaxial transceiver module for use in a fiber optic gyroscope according to claim 3, wherein the five, six and seven pitches are set to 250m.
  6. 6. A triaxial transceiver module for use in a fiber optic gyroscope according to claim 3, wherein the eight, nine and ten channel spacing is set to 500m.
  7. 7. The triaxial transceiver module for optical fiber gyro according to claim 3, wherein a distance between the first channel and the eighth channel is larger than 1200m.
  8. 8. The triaxial transceiver module for an optical fiber gyro according to claim 3, wherein the MMI A spectral ratio is 1:2, the MMI B spectral ratio is 1:1, and the MMI C spectral ratio is 1:1.
  9. 9. A triaxial transceiver assembly for use in a fiber-optic gyroscope according to claim 3, wherein the channel-to-channel five, channel-to-channel six and channel-to-channel seven link losses are less than 8.2dB (TE mode), and the channel-to-channel eight, channel six-to-channel nine and channel seven-to-channel ten link losses are 3.4dB.
  10. 10. A triaxial transceiver assembly for use in a fiber optic gyroscope according to claim 3, wherein the channel crosstalk channel one-channel eight, channel one-channel nine and channel one-channel ten are less than-50 dB, the channel crosstalk channel six-channel eight, channel seven-channel eight and channel seven-channel nine are less than-40 dB, and the channel crosstalk channel three-channel five, channel four-channel five and channel four-channel six are less than-40 dB.

Description

Triaxial receiving and transmitting assembly for fiber-optic gyroscope Technical Field The invention relates to the technical field of fiber-optic gyroscopes, in particular to a triaxial transceiver component used in a fiber-optic gyroscope. Background The fiber optic gyroscope is taken as a high-performance inertial sensing device based on the Sagnac effect, takes an important role in the fields of inertial navigation and motion detection by virtue of an all-solid structure, low-noise characteristic, strong environment interference resistance and wide precision coverage range, and along with the urgent requirements of inertial guided missiles on miniaturized navigation systems, strict requirements of unmanned aerial vehicles on lightweight and low-power consumption sensing equipment, a great number of requirements of the Internet of things on low-cost and reliable motion sensing nodes and the continuous increase of the large-scale application requirements of an automatic driving technology on high-precision and economic practical inertial sensors, the middle-low-precision fiber optic gyroscope faces the challenge of the comprehensive performance index of more severe SWaP (size, weight, power consumption and cost), and the traditional fiber optic gyroscope has the defects of relatively complex installation process, relatively large product size, relatively heavy weight, relatively complex layout, easy failure and relatively poor stability and reliability due to component dispersion. Accordingly, there is a need for a triaxial transceiver assembly for use in a fiber optic gyroscope that addresses the above-described issues. Disclosure of Invention In order to overcome the defects of the prior art, the embodiment of the invention provides the triaxial transceiver component for the optical fiber gyroscope, by arranging the structures such as the shell, the laser, the three-way detector and the array tail fiber component, the light source detector is integrated, through the integration innovation, the SWaP comprehensive performance index challenge faced by the middle-low precision optical fiber gyroscope can be effectively reduced, on one hand, the integration of the light source detector reduces the complex connection and layout among a plurality of independent components, the internal structure of the optical fiber gyroscope is more compact, thereby remarkably reducing the overall size and weight, on the other hand, the integration design reduces the number of connection points and components which can possibly fail, improves the stability and the reliability of products, reduces the maintenance cost and the power consumption, accords with the requirements of the Internet of things on low-cost and reliable motion sensing nodes, and in practical application, the integrated triaxial transceiver component also has the advantage of convenient installation, the traditional optical fiber gyroscope is more simple and efficient due to component dispersion, the installation process is more complex and easy to generate installation errors, the integration design of the invention can be used for rapidly completing the installation process, the production efficiency and the accuracy of the installation is improved, the accuracy of the inertial sensor is further improved, the inertial sensor can be accurately realized, the inertial sensor is accurately sensed in the technical field of the optical fiber gyroscope is realized, the requirements of the inertial sensor is more accurate, and the inertial sensor is more accurate in the technical and the signal sensor is realized, and the inertial sensor is more accurate to realize. The three-axis transceiver component for the fiber-optic gyroscope comprises a shell, wherein an upper extension frame is arranged at the top of the shell, an upper mounting hole is formed in the upper extension frame in a penetrating mode, the upper extension frame and the shell are of an integrated structure, a lower extension frame is arranged at the bottom of the shell, a lower mounting hole is formed in the lower extension frame in a penetrating mode, the lower extension frame and the shell are of an integrated structure, a TIA circuit is fixedly arranged in the shell, a laser is arranged on one side of the TIA circuit, the laser is fixedly arranged in the shell, three-way detectors are arranged at the bottom of the laser and fixedly arranged in the shell, the three-way detectors are arranged on one side, close to the laser, of the TIA circuit, an array tail fiber component is arranged on one side, far away from the laser, and a PLC (programmable logic controller) optical path is arranged on the rear side of the TIA circuit. In a preferred embodiment, the PLC optical path size is set to 410mm and the diameter of the PLC optical path core equivalent energy distribution is set to 6m. In a preferred embodiment, the PLC optical circuit includes a first path, a second path, a third path, a fourth path