Radiation generation in semiconductor lasers is invariably accompanied by unwanted heat-producing processes, which results in the wavelength instability. Introduction of distributed feedback (DFB) lasers (λ = 1550 nm) executed in Butterfly body and measuring bridge with the differential amplifier into the thermal stabilization circuit resulted in the decrease of instability level of wavelength from 4 pm to 300 fm. Thermoelectric transfer characteristic of built-in cooling circuit is studied for the determination of optimal transmission band of Peltier Element. It is shown that for different laser diodes (wavelengths of 1550, 1310 and 980 nm) the cutoff frequency of Peltier Element lies within the range of 0.2–0.4 Hz.


Разработка: студия Green Art