A light and small dual-axis photonic crystal fiber optic gyroscope skeleton

Abstract

The invention discloses a light small biaxial photonic crystal optical fiber gyroscope framework which comprises a framework body, an outer cover, a front plate and a lower cover, wherein the framework body comprises three cross sections of the side surface of a cylinder and a bottom surface of the cylinder; two optical fiber ring assemblies are mounted on two cross sections vertical to each other; two detectors and two couplers are mounted on the rest cross section; an SLD (super luminescent diode) light source and another coupler are mounted on the bottom surface; the front plate is mounted on the inner cross section of the framework body with the detectors and the couplers; the outer cover surrounds the three cross sections of the framework body and is mounted aong two top surfaces and the bottom surface of the framework body; a light source plate is fixed at the bottom of the framework body through a light source mounting hole; the lower cover is mounted at the lower end of the framework body. According to the framework disclosed by the invention, a lightest and smallest optical fiber gyroscope is taken as a guider, and the measurement accuracy of the optical fiber gyroscope is fully considered; the optical fiber ring assemblies and a circuit board are arranged on the different cross sections, so that optical fiber rings cannot be interfered by magnetic radiation generated by components on the signal circuit board; a channel is not shared by lead wires and optic fibers, so that the signal interference is avoided; the SLD light source is mounted at the bottom, so that devices such as optical fiber coils and detectors are slightly influenced by the light source temperature.

Description

Technical field [0001] The invention relates to an optical fiber gyroscope skeleton, in particular to a light and small two-axis optical fiber gyroscope skeleton which can be used for photonic crystal fiber optic gyroscopes, and belongs to the technical field of inertia. Background technique [0002] Since the beginning of the 21st century, with the development of information warfare, higher requirements have been put forward for the ability of weapon equipment to capture, aim, and track beyond visual range targets, and various advanced optoelectronic platforms including fiber optic gyroscopes have emerged. Compared with the traditional mechanical gyroscope, the fiber optic gyroscope is a new type of all-solid-state gyroscope without rotating parts. It has obvious advantages such as fast start-up, large measurement range, high reliability, and strong anti-electromagnetic interference ability. Its application field is continuously expanding. [0003] With the development of national...

AI Technical Summary

Problems solved by technology

In the light and small design process of the gyroscope, these factors have a great influence on the performance of ordinary optical fibers, such as the increase in fiber loss as the size of the fiber ring decreases, poor temperature stability, large birefringence and extinction ratio, and in the case of nuclear radiation, the fiber core The doping in the fiber is easy to diffuse and cause additional increase in fiber loss, etc.

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