Title :
Distributed feedback laser diode and module for CATV systems
Author :
Takemoto, Akira ; Watanabe, Hitoshi ; Nakajima, Yasuo ; Sakakibara, Yasushi ; Kakimoto, Syoichi ; Yamashita, Junichiro ; Hatta, Tatsuo ; Miyake, Yoshio
Author_Institution :
Mitsubishi Electr. Corp., Hyogo, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Harmonic distortion of distributed feedback laser diodes (DFB-LDs) for analog transmission systems is investigated. It is shown that, under a modulation frequency of less than 1 GHz, the harmonic distortion depends on the nonlinearity of the light output power-current (P-I) curve under the continuous wave (CW) condition, which is determined by the coupling constant κ L, and that the distortion can be minimized at κ L~1. A 1.3 μm wavelength InGaAsP DFB-PPIBH (p-substrate partially inverted buried heterostructure) LD and its module, with low distortion by the control of a coupling constant, have been developed
Keywords :
cable television; distributed feedback lasers; harmonics; modules; optical communication equipment; semiconductor junction lasers; 1 GHz; 1.3 micron; CW; InGaAsP; UHF; analog transmission systems; continuous wave; coupling constant; distributed feedback laser diodes; harmonic distortion; laser diode module; modulation frequency; output power-current curve; p-substrate partially inverted buried heterostructure; Diode lasers; Distributed feedback devices; Fabry-Perot; Frequency; Harmonic distortion; Laser noise; Optical coupling; Optical distortion; Optical transmitters; Semiconductor device noise;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
