Title :
Optical FSK signal detection in a heterodyne system using semiconductor lasers
Author :
Saito, S. ; Yamamoto, Y. ; Kimura, T.
Author_Institution :
NTT, Musashino Electrical Communication Laboratory, Musashino, Japan
Abstract :
A 10¿8 bit error rate is achieved for 100 Mbit/s signals in an FSK heterodyne frequency-discrimination detection system, in which AlGaAs double-heterostructure lasers are used as both the FSK transmitter and the local oscillator. Receiving signal power level to achieve a low bit error rate is experimentally obtained, which confirms the principle of optical heterodyne detection. AM quantum noise in the laser local oscillator and FM quantum noise are important factors which determine the system performance.
Keywords :
frequency shift keying; optical communication equipment; semiconductor junction lasers; signal detection; 100 Mbit/s signals; AM quantum noise; AlGaAs double-heterostructure lasers; FM quantum noise; FSK transmitter; bit error rate; frequency-discrimination detection system; heterodyne system; local oscillator; optical FSK signal detection; optical communication; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820320
