Title :
Intermodulation and harmonic distortion in InGaAsP lasers
Author :
Darcie, T.E. ; Tucker, R.S. ; Sullivan, G.J.
Author_Institution :
AT&T Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
Abstract :
A theoretical and experimental study is presented of intermodulation and harmonic distortion in high-speed 1.3 and 1.5 ¿m InGaAsP lasers modulated at frequencies up to 8 GHz. It is found that all lasers measured, including Fabry-Perot and distributed feedback lasers, generate approximately the same distortion levels for a given modulation depth and relaxation resonance frequency. There are minor differences between lasers, which result from differences in the damping of the small-signal resonance peak.
Keywords :
III-V semiconductors; electric distortion; gallium arsenide; indium compounds; intermodulation; optical links; semiconductor junction lasers; Fabry Perot lasers; III-V semiconductors; InGaAsP lasers; damping; differences between lasers; distortion levels; distributed feedback lasers; harmonic distortion; intermodulation; microwave modulation; modulation depth; modulation frequency 8 GHz; optical fibre sources; relaxation resonance frequency; small-signal resonance peak; wavelengths 1.3 and 1.5 micron;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850470
