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High-accuracy temperature control and driving circuit system of laser

A technology for driving circuits and lasers, which is applied to lasers, laser components, semiconductor lasers, etc., can solve the problems of large volume, low precision control, and high price, and achieve integration, high control accuracy, and miniaturization. Effect

Inactive Publication Date: 2018-09-04
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] The present invention proposes a laser high-precision temperature control and drive circuit system in order to solve the problems of low precision control, high price, and large volume that are not conducive to system integration in the existing laser temperature control source and drive source.

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  • High-accuracy temperature control and driving circuit system of laser

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Embodiment Construction

[0014] A high-precision temperature control and drive circuit system for a laser, including a key control module, an STM32 connected to the signal output end of the key control module, and a dual-channel digital potentiometer connected to the signal output end of the STM32; it also includes a resistor R 0 , R 2 , preset resistance R 1 and the reference resistor R 4 ;Output resistance of the first channel of the digital potentiometer R 3 , laser thermistor R th , reference resistance R 4 , and resistance R 0 , R 1 , R 2 Together constitute a Wheatstone bridge network, as an equivalent Wheatstone bridge temperature acquisition and conversion circuit, in which the resistance R 2 , R 0 , R 1 in series, R 4 one end of the R 1 connected, R 4 the other end of the Rth The output terminal is connected ( R th the other end to ground); R 3 The output terminal is connected to the R 2 and R 0 between; R 2 one end of the R 0 connect, R 2 The other ...

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Abstract

The invention relates to a temperature control and driving circuit system of a laser, in particular to a circuit system capable of achieving changeable adjustment and output of a working temperature and a driving current of the laser. By the temperature control and driving circuit system, the problems of influence of slight fluctuation of the driving current on a monolithic integrated chaotic laser entering a chaotic path and an output chaotic signal state and influence of slight fluctuation of the temperature on wavelength and a threshold current on the chaotic laser are effectively solved. The high-accuracy temperature control and driving circuit design of the laser mainly comprises three parts of a temperature control module, a DC driving module and a key control module.

Description

technical field [0001] The invention relates to a high-precision temperature control and driving circuit system of a chaotic laser, in particular to a circuit system capable of realizing variable output of the laser working temperature and driving current. Background technique [0002] In recent years, chaotic signals have shown important application value in the fields of communication, sensing, and information security. At present, there are mainly two ways to generate chaotic signals: 1. Discrete devices generate chaotic signals; 2. Integrated chaotic lasers generate chaotic signals. However, discrete devices generate chaotic signals, which have complex structures, are easily affected by the environment, and have unstable output, which is not conducive to the application of chaotic signals. As a new type of optoelectronic device, integrated chaotic laser has the advantages of small size, easy integration with other systems, and can output stable and reliable broadband ch...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/024H01S5/042
Inventor 张明江杨帅军张建忠刘毅乔丽君于小雨孟洁
Owner TAIYUAN UNIV OF TECH
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