Title :
Optical FM signal amplification and FM noise reduction in an injection locked AlGaAs semiconductor laser
Author :
Kobayashi, S. ; Yamamoto, Yusaku ; Kimura, Tomohiro
Author_Institution :
NTT, Musashino Electrical Communication Laboratory, Musashino, Japan
Abstract :
Optical frequency. modulation index suppression in FM signal amplification and FM signal generation in an injection locked semiconductor laser are experimentally studied by injecting coherent FM signals and CW light, respectively. Experimental results are in good agreement with a simple theory using the van der Pol equation with an external signal term. The FM noise accumulation in cascade injection locked amplifiers is calculated and an optimum design for an injection locked repeater system is discussed.
Keywords :
III-V semiconductors; aluminium compounds; electron device noise; frequency modulation; gallium arsenide; optical communication equipment; optical modulation; semiconductor junction lasers; CW light; FM noise reduction; FM signal amplification; FM signal generation; III-V semiconductor; cascade injection locked amplifiers; injection locked AlGaAs semiconductor laser; injection locked repeater system; optical FM index suppression; van der Pol equation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810591
