Method and system for starting light source

Abstract

The invention discloses a method and system for starting a light source. The method includes the steps that when the temperature difference value between the temperature of the environment of a light source and a preset target temperature is larger than a temperature difference threshold value, the target temperature is adjusted to be a first target temperature differed from the current environment temperature by a preset adjustment amplitude; the temperature of the environment of the light source is adjusted to be the first target temperature through the preset adjustment amplitude by adjusting the size and the direction of the current of a thermoelectric refrigerating unit; if the temperature difference value between the first target temperature and the preset target temperature is still larger than the temperature difference threshold value, the target temperature continues to be modified and set through the temperature of the environment of the light source and the preset adjustment amplitude till the temperature difference value between the temperature of the environment of the light source and the preset target temperature is smaller than the temperature difference threshold value, and the preset target temperature serves as the final temperature adjusted by the thermoelectric refrigerating unit. According to the method and system, as the preset target temperature is successively approximated, the current over protection problem and the shocking problem, caused by the overlarge temperature control current, of the thermoelectric refrigerating unit are solved, temperature adjusting time is shortened, and quick starting of the light source is achieved.

Description

technical field [0001] The present invention relates to the technical field of starting a light source, and more specifically, to a method and system for starting a light source. Background technique [0002] As a new type of angular rate sensor, fiber optic gyroscope has been widely used in aerospace, aviation and shipbuilding and other fields. As the main component of the fiber optic gyroscope, the performance of the light source directly affects the performance of the fiber optic gyroscope. There are two types of light sources used in fiber optic gyroscopes: broadband fiber optic light source and SLD (Superluminescent Light Emitting Diodes, Superluminescent Light Emitting Diodes). Broad-spectrum fiber optic light source and SLD have the same light-emitting principle, and they both excite light of a certain band through their internal laser dies to achieve illumination. Since the temperature has a great influence on the wavelength, it is necessary to make the laser die w...

AI Technical Summary

Problems solved by technology

When the temperature difference between the ambient temperature of the light source and the target temperature is large, it is easy to cause the temperature control current input to the thermoelectric cooler to be too large, resulting in problems such as over-current protection and oscillation of the thermoelectric cooler, resulting in excessive temperature adjustment time. Long, so that the fiber optic gyroscope can not meet the requirements of fast start

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