Title :
Broadband information distribution networks employing optical frequency division multiplexing technologies
Author :
Toba, Hiromu ; Oda, Kazuhiro ; Nakanishi, K. ; Shibata, Nori ; Nosu, Kiyoshi
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
Abstract :
The authors consider the configuration of the OFDM (optical frequency division multiplexing) broadband distribution networks, including the communication service, and discuss the following OFDM technologies: a multichannel frequency stabilization technique, a polarization-insensitive waveguide FS-SW (frequency selection switch), and an FSK (frequency-shift keying)/direct-detection scheme using a Mach-Zehnder filter. The waveguide FS-SW, consisting of seven Mach-Zender filters, successfully selected channels with a total crosstalk of less than -13 dB. The balanced receiver configuration of the OFD (optical frequency discriminator) receiver is 3 dB more sensitive than single-detection-type OFDs, such as a Fabry-Perot-filter-type discriminator. A 100-channel OFDM transmission/distribution experiment at 622 Mb/s over a 50 km fiber length was performed
Keywords :
broadband networks; digital communication systems; frequency division multiplexing; multiplexing equipment; optical communication equipment; optical links; 50 km; 622 Mbit/s; Mach-Zehnder filter; balanced receiver configuration; broadband information distribution networks; communication service; crosstalk; direct detection; dispersion shifted fibre; four wave mixing; frequency selection switch; frequency-shift keying; multichannel frequency stabilization; nondispersion shifted fibre; optical frequency discriminator; optical frequency division multiplexing; polarization-insensitive waveguide; Frequency division multiplexing; Frequency shift keying; OFDM; Optical crosstalk; Optical fiber networks; Optical filters; Optical frequency conversion; Optical receivers; Optical sensors; Optical waveguides;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116744
