Title :
Wide-temperature-range operation of 1.3 /spl mu/m DFB lasers with low distortion for analog transmission
Author :
Watanabe, H. ; Shibata, K. ; Aoyagi, T. ; Takiguchi, T. ; Higuchi, H. ; Aiga, M.
Author_Institution :
Optoelectron. & Microwave Devices Lab., Mitsubishi Electr. Corp., Hyogo, Japan
Abstract :
We have clarified a mechanism for the degradation of linearity at high temperature, and successfully realized low-distortion 1.3 /spl mu/m DFB lasers operating over a wide-temperature-range. Those lasers can be applied to bi-directional CATV distribution systems without any coolers. A carrier overflow is found to be a dominant factor determining the distortion at high temperatures. Devices with low leakage current have realized low distortion less than -50 dBc at 65/spl deg/C in 78-channel CSO measurements.
Keywords :
cable television; distributed feedback lasers; infrared sources; laser transitions; leakage currents; optical fibre networks; optical noise; optical transmitters; semiconductor lasers; /spl mu/m DFB lasers; 1.3 mum; 65 C; CSO measurements; analog transmission; bi-directional CATV distribution systems; carrier overflow; dominant factor; high temperature; high temperatures; low distortion; low leakage current; low-distortion 1.3 /spl mu/m DFB lasers; wide-temperature-range; wide-temperature-range operation; Carrier confinement; Current measurement; Degradation; Distortion measurement; Fiber lasers; Laser noise; Leakage current; Linearity; Optical distortion; Temperature dependence;
Conference_Titel :
Semiconductor Laser Conference, 1996., 15th IEEE International
Conference_Location :
Haifa, Israel
Print_ISBN :
0-7803-3163-X
DOI :
10.1109/ISLC.1996.558789
