Open AccessTemperature control circuit design of high-precision laser diode based on type III compensation network
Author(s) -
Yulong Tang,
Yong He,
Yansong Meng,
Weiwei Wang,
Rongyan Zhang,
Er-wang Du,
Lei Du
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1827/1/012003
Subject(s) - thermistor , temperature control , compensation (psychology) , thermoelectric cooling , materials science , diode , control theory (sociology) , laser , transfer function , laser diode , pid controller , phase margin , time constant , electronic circuit , thermoelectric effect , optoelectronics , computer science , engineering , optics , electrical engineering , physics , control (management) , control engineering , thermodynamics , operational amplifier , cmos , artificial intelligence , psychoanalysis , amplifier , psychology
Since the performance of laser diodes is sensitive to ambient temperature, thermoelectric cooler temperature control circuits based on standard PID temperature compensation networks are usually designed to achieve diode constant temperature control. The thermoelectric cooler time constant and thermistor thermal time constant introduced in the temperature control system will reduce the stability margin of the system. In view of this, this paper designed a high-precision laser diode temperature control circuit based on the type III compensation network, and established the transfer function model, optimized the compensation network parameter tuning method, made the phase margin of the temperature control system reach π/8, and the long-term temperature control accuracy was better than 3 mK in the ambient temperature range of 5 to 40 °C.