Title :
Design and performance of FSK-direct detection scheme for optical FDM systems
Author :
Toba, Hiromu ; Oda, Kazuhiro ; Nosu, Kiyoshi
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
fDate :
10/1/1991 12:00:00 AM
Abstract :
The authors describe the design and performance of an optical frequency-division-multiplexing (FDM) system that uses a frequency-shift-keying (FSK) direct detection scheme. This system utilizes a Mach-Zehnder type periodic filter as a channel selective filter and optical frequency discriminator. Requirement conditions for laser diode linewidth, frequency deviation, channel frequency spacing, detuning of optical filters, and signal power variance are discussed. These characteristics are experimentally confirmed using planar waveguide type filters
Keywords :
frequency division multiplexing; frequency shift keying; optical communication equipment; optical filters; optical links; optical modulation; FSK-direct detection scheme; Mach-Zehnder type periodic filter; channel frequency spacing; channel selective filter; direct detection scheme; frequency deviation; frequency-division-multiplexing; frequency-shift-keying; integrated optics; laser diode linewidth; optical FDM systems; optical filter detuning; optical frequency discriminator; planar waveguide type filters; signal power variance; Frequency division multiplexing; Frequency shift keying; Optical design; Optical detectors; Optical filters; Optical interferometry; Optical receivers; Optical transmitters; Optical waveguides; Switches;
Journal_Title :
Lightwave Technology, Journal of
