Amplified spontaneous emission (ASE) light source

Abstract

An amplified spontaneous emission (ASE) light source comprises a casing, a light path portion and a circuit portion, wherein the light path portion and the circuit portion are fixed in the casing, the casing comprises a base and a top cover which are connected detachably, the light path portion is arranged on the inner side of the base, and the circuit portion is arranged on the inner side of the top cover. Furthermore, the light path portion comprises a pump laser, a wavelength division multiplexer, an optical fiber ring, a Faraday rotating mirror and an optoisolator. The optical fiber ring is a frameless optical fiber ring formed by winding optical fibers with cladding diameter of 30-80mum. Compared with existing ASE light sources, the casing adopts a structure that the base and the top cover are separated, casing assembly is convenient, and the thickness of the casing is thinner than that of a traditional casing. The optical fiber ring of the light path portion is the frameless optical fiber ring formed by winding the optical fibers with cladding diameter of 30-80mum, compared with the optical fiber ring formed by winding traditional optical fibers of 125mum and the like on a frame and under the identical bending loss, the winding radius can be smaller, and temperature stability and quake-proof performance are better. Correspondingly, the casing can be manufactured to be small in volume and light in weight.

Description

technical field [0001] The present invention relates to a fiber optic gyroscope, in particular to an Amplified spontaneous emission (ASE) fiber optic light source for a fiber optic gyroscope. Background technique [0002] Fiber optic gyro is a high-precision inertial sensor for measuring attitude and orientation. It has been widely used in robots, ships, aircraft, Missiles and many other fields. As one of the key components of the fiber optic gyroscope, the ASE light source system needs to provide a laser with a stable wavelength, and the fiber optic gyroscope is required to work normally in the full temperature range (-45~80°C), and to be resistant to vibration and shock. High requirements are placed on the stability of the ASE light source. [0003] The traditional ASE light source is composed of an optical path part and a circuit part fixed on the shell, wherein the circuit part is used to drive the pump laser in the optical path part, so that when the pump laser works ...

AI Technical Summary

Problems solved by technology

There are some shortcomings in the traditional ASE light source, for example: most of the traditional ASE light sources use an integral shell, which creates many obstacles for the assembly of the device; in order to reduce the bending loss of the fiber ring, the diameter and volume of the shell are difficult to further reduce; The heat dissipation of the optical path part and the circuit part is completed inside the shell, which leads to the unsatisfactory overall heat dissipation performance of the ASE light source; when the temperature changes sharply, the circuit board is easily affected by the water vapor in the shell, etc.

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