Title :
Characterization of the modulation and noise properties of a three-electrode DFB laser
Author :
Goobar, Edgard ; Schiess, Marcel
Author_Institution :
Dept. of Microwave Eng., R. Inst. of Technol., Stockholm, Sweden
fDate :
5/1/1992 12:00:00 AM
Abstract :
The modulation and noise properties of a three-electrode DFB laser have been measured. At proper biasing, the frequency modulation response could be chosen to be in phase or 180 degrees out of phase with respect to the intensity modulation by selecting the modulated electrode. Applying a first order equalization/filter, a flat frequency modulation response was measured up to 5 GHz. A 20-dB broadband suppression of the intensity modulation was accomplished when modulating two sections in push-pull. The spectral densities of the FM and intermodulation noise were measured showing remarkably flat intermodulation and FM noise spectra.<>
Keywords :
distributed feedback lasers; electrodes; electron device noise; frequency modulation; optical modulation; semiconductor junction lasers; 5 GHz; FM noise; broadband suppression; diode lasers; first order equalization/filter; flat frequency modulation response; intensity modulation; intermodulation noise; modulated electrode; noise properties; noise spectra; proper biasing; push-pull; spectral densities; three-electrode DFB laser; Electrodes; Fiber lasers; Frequency modulation; Intensity modulation; Laser noise; Noise measurement; Optical fiber networks; Optical interferometry; Phase modulation; Power generation;
Journal_Title :
Photonics Technology Letters, IEEE
