Title :
Intensity modulation and noise characterization of high-speed semiconductor lasers
Author :
Miller, Christopher M.
Author_Institution :
Hewlett-Packard, Rohnert Park, CA, USA
fDate :
5/1/1991 12:00:00 AM
Abstract :
Several properties of lasers used in high-speed optical transmission systems are described. The characteristics of the modulation bandwidth transfer function and the relaxation oscillation frequency, and factors that must be optimized to maximize the modulation bandwidth, are examined. The intensity noise spectral characteristics and the relationship to the modulation bandwidth are determined. The relative intensity noise (RIN) of the laser is defined, and its relationship to the laser transmitters signal-to-noise ratio is noted. Techniques to measure these laser characteristics are reviewed, along with some measurement limitations. Sample measurements of the modulation response intensity noise, and RIN of a 1300-nm DFB laser using the HP 71400 lightwave signal analyzer are shown.<>
Keywords :
laser variables measurement; noise measurement; optical communication equipment; optical modulation; optical transfer function; optical variables measurement; semiconductor junction lasers; 1300 nm; DFB laser; HP 71400 lightwave signal analyzer; SNR; high-speed optical transmission systems; high-speed semiconductor lasers; intensity modulation; intensity noise spectral characteristics; laser characteristics measurement; laser transmitter; modulation bandwidth transfer function; modulation response; noise characterization; relative intensity; relaxation oscillation frequency; signal-to-noise ratio; Bandwidth; Frequency; High speed optical techniques; Intensity modulation; Laser noise; Optical modulation; Optical noise; Optical transmitters; Signal to noise ratio; Transfer functions;
Journal_Title :
LTS, IEEE
