Mr. Enji Liang Profile

Enji Liang

Student at Xi'an Institute of Optics And Precision Mechanics

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Proceedings Article | 24 October 2017 Paper

Design of high precision temperature control system for TO packaged LD

Enji Liang, Baoke Luo, Bin Zhuang, Zhengquan He

Proceedings Volume 10458, 104581Y (2017) https://doi.org/10.1117/12.2283461

KEYWORDS: Control systems design

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Temperature is an important factor affecting the performance of TO package LD. In order to ensure the safe and stable operation of LD, a temperature control circuit for LD based on PID technology is designed. The MAX1978 and an external PID circuit are used to form a control circuit that drives the thermoelectric cooler (TEC) to achieve control of temperature and the external load can be changed. The system circuit has low power consumption, high integration and high precision,and the circuit can achieve precise control of the LD temperature. Experiment results show that the circuit can achieve effective and stable control of the laser temperature.

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