Light source screening and testing device

Abstract

The invention discloses a light source screening and testing device which comprises an optical splitter, a first photoelectric detector, a waveguide modulator, a first temperature sensor, a heating and refrigerating module, a second photoelectric detector, an FPGA PLC and a digital processing module, wherein the optical splitter is used for converting the optical signal of a light source into two paths; the first photoelectric detector is used for converting one path of the optical signal into an electrical signal; the waveguide modulator is used for modulating the other path of the optical signal; the first temperature sensor is arranged in the waveguide modulator and is used for sensing the temperature data of the waveguide modulator; the heating and refrigerating module is arranged in the waveguide modulator and is used for heating and refrigerating the waveguide modulator; the second photoelectric detector is used for converting the modulated optical signal into the electrical signal; the FPGA PLC is used for controlling and obtaining the electrical signals of the first photoelectric detector and the second photoelectric detector; the digital processing module is used for obtaining the temperature data of the first temperature sensor as well as the electrical signals of the first photoelectric detector and the second photoelectric detector, controlling the temperature of the heating and refrigerating module, sending the modulated signal to the waveguide modulator and calculating the mean wavelength, the optical power fluctuation and the noise of the optical source.

Description

technical field [0001] The invention relates to the field of optical fiber gyroscope testing, in particular to a screening and testing device for a light source of an optical fiber gyroscope. Background technique [0002] As one of the core optical components in FOG (Fiber-Optic Gyroscope, fiber-optic gyroscope), the light source plays a very important role, which is to provide the fiber-optic gyroscope with the appropriate optical signal required to generate the Sagnac effect. The light source used in the fiber optic gyroscope requires its high reliability, small size, and long life. At the same time, it also requires the light source to have good spatial coherence and weak time correlation. The light source used in medium and low-precision fiber optic gyroscopes is mainly a superluminescent light-emitting diode (SLD), which integrates thermoelectric coolers, thermistors, SLD dies, heat sinks and other devices. The design, process, and structure design of the epitaxial lay...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a light source screening test device, which is used to solve the problem that the existing test system for light source screening test needs to be temporarily built, responsible for the construction, and lacks a special test system

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