The Design of High Precision Temperature Control Circuit for DFB Laser Diode

The Design of High Precision Temperature Control Circuit for DFB Laser Diode
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DFB激光二极管高精度温控电路设计

DOI：
10.4028/www.scientific.net/amr.476-478.286
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Shougang Zhang
Shougang Zhang
中科院分区：
--
文献类型：
--
作者：
X. Li;Jie Ma;H. Liu;Shougang Zhang

文献摘要

被引文献

相似文献

本文设计了一种以单片机为关键器件的D​​FB激光二极管温度控制电路。该电路采用不平衡电桥测量激光二极管的温度，测量结果由ADC转换为数字量。之后，通过数字PID计算得到误差信号。最后，DAC芯片将误差信号变成电压来驱动TEC的功率放大器。还增加了设定点和实时温度显示功能。经过长时间的测试，我们确认温度精度优于±0.001℃。
A circuit using the singlechip as key component for temperature control for DFB laser diode is designed in this article. An imbalance electrical bridge for measuring the temperature of laser diode is used in this circuit, and the result of measurement is converted to digital quantity by ADC. After that, the error signal is gotten through the digital PID calculation. At last, the DAC chip make error signal be voltage to drive power amplifier for TEC. The function of set point and display of real time temperature is also added. After the test for a long time, we confirm the precision of temperature is better than ±0.001°C.