Title :
FM- and AM-noise spectra of 1.3 ¿m InGaAsP DFB lasers in 0¿3 GHz range and determination of their linewidth enhancement factor ¿
Author :
Kikuchi, K. ; Okoshi, T.
Author_Institution :
University of Tokyo, Department of Electronic Engineering, Tokyo, Japan
Abstract :
Spectral measurements of FM and AM noises of 1.3 ¿m InGaAsP DFB lasers are performed in the frequency range from DC to 3 GHz. The resonance behaviour of the measured spectra is compared with theory; the absolute value of the linewidth enhancement factor ¿ is determined to be 2.2 by very successful curve fitting between theory and the measured FM-noise spectra.
Keywords :
III-V semiconductors; distributed feedback lasers; electron device noise; gallium arsenide; gallium compounds; indium compounds; semiconductor junction lasers; spectral line breadth; 1.3 microns; AM-noise spectra; FM-noise spectra; InGaAsP DFB lasers; curve fitting; frequency 0 to 3 GHz; linewidth enhancement factor; resonance behaviour; semiconductor laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840713
