Title :
Measurement of spectra of and correlation between FM and AM noises in GaAlAs lasers
Author :
Ikuchi, K.K. ; Okoshi, T.
Author_Institution :
University of Tokyo, Department of Electronic Engineering, Tokyo, Japan
Abstract :
The FM- and AM-noise spectra of a CSP-type GaAlAs laser, and the correlation between FM and AM noises, were measured in the frequency range below 100 kHz with the bias current as a parameter. The measured spectra consist of power-independent 1/f noise and power-dependent white-noise components. A strong correlation is observed between the FM and AM noises when the output power is small. This fact supports the theory developed by Henry, in which the amplitude-phase coupling causes the linewidth increase.
Keywords :
III-V semiconductors; aluminium compounds; amplitude modulation; frequency modulation; gallium arsenide; random noise; semiconductor junction lasers; white noise; <100 kHz; AM-noise spectra; CSP-type; FM noise spectra; GaAlAs lasers; III-V semiconductor; amplitude-phase coupling; bias current parameter; channel substrate planar semiconductor laser; linewidth increase; power-dependent white noise; power-independent 1/f noise; random noise;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830554
