Title :
Novel optical FSK heterodyne single filter detection system using a directly modulated DFB-laser diode
Author :
Emura, K. ; Shikada, M. ; Fujita, S. ; Mito, I. ; Honmou, H. ; Minemura, K.
Author_Institution :
NEC Corporation, Opto-Electronics Research Laboratories, Kawasaki, Japan
Abstract :
A novel optical FSK heterodyne single filter detection system, which can use direct modulation and can tolerate the relatively large spectral width of a laser diode, is proposed. The receiver sensitivity improvement, as much as 8 dB over direct detection using a Ge APD, has been achieved after 105 km transmission at 100 Mbit/s.
Keywords :
distributed feedback lasers; frequency shift keying; optical communication equipment; semiconductor junction lasers; 100 Mbit/s; directly modulated DFB-laser diode; optical FSK heterodyne single filter detection system; receiver sensitivity improvement; spectral width;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840696
