Title :
A 100-channel optical FDM transmission/distribution at 622 Mb/s over 50 km
Author :
Toba, Hiromu ; Oda, Kazuhiro ; Nakanishi, Kenji ; Shibata, Nori ; Nosu, Kiyoshi ; Takato, Norio ; Fukuda, Mitsuo
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
A 100-channel optical frequency-division multiplexing (FDM) transmission/distribution experiment at 622 Mb/s is demonstrated for a fiber length of 50 km. The feasibility of a polarization-insensitive waveguide frequency selection switch for 10-GHz intervals and a frequency-shift-keying (FSK) direct-detection scheme employing a Mach-Zehnder filter is verified. The demodulation circuit employs a Mach-Zehnder filter and a balanced receiver, which utilizes optical power more efficiently than the Fabry-Perot filter. No receiver sensitivity degradation is observed due to interchannel crosstalk of the 128-channel tunable waveguide frequency selection switch (FS-SW) or fiber four-wave mixing for transmissions over a 50-km-long nondispersion-shifted (NDS) fiber and a 26-km-long dispersion-shifted (DS) fiber
Keywords :
crosstalk; digital communication systems; frequency division multiplexing; multiwave mixing; optical cables; optical links; 26 km; 50 km; 622 Mbit/s; Mach-Zehnder filter; balanced receiver; demodulation circuit; dispersion shifted fiber; fiber four-wave mixing; fiber length; frequency shift keying direct detection scheme; interchannel crosstalk; nondispersion shifted fiber; optical frequency division multiplexing transmission/distribution; optical power; polarization-insensitive waveguide frequency selection switch; receiver sensitivity degradation; tunable waveguide frequency selection switch; Fiber nonlinear optics; Frequency division multiplexing; Frequency shift keying; Optical crosstalk; Optical fiber polarization; Optical filters; Optical mixing; Optical receivers; Optical sensors; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
