Title :
Experimental investigation of thermal crosstalk in a distributed feedback laser array
Author :
Sato, Kenji ; Murakami, Makoto
Author_Institution :
NTT Opto-Electron. Lab., Kanagawa, Japan
fDate :
6/1/1991 12:00:00 AM
Abstract :
Thermal crosstalk between lasers in a distributed feedback laser array has been investigated by measuring the oscillating-wavelength shift. Between closely situated lasers, thermal crosstalk due to lateral heat spreading decreases proportionally to the inverse of the laser distance. Thermal crosstalk due to heating in the heat sink and stem becomes dominant between relatively distant ( approximately 300 mu m) lasers. A diamond heat sink reduces thermal crosstalk to about 1/3 compared to a silicon heat sink.<>
Keywords :
crosstalk; distributed feedback lasers; semiconductor laser arrays; thermo-optical effects; C; Si heat sink; closely situated lasers; diamond heat sink; distributed feedback laser array; lateral heat spreading; oscillating-wavelength shift; stem; thermal crosstalk; Crosstalk; Distributed feedback devices; Heat sinks; Laser feedback; Optical arrays; Power lasers; Semiconductor laser arrays; Silicon; Thermal conductivity; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
