Title :
A tuning technique of 128 ch. frequency selection switches for optical FDM information distribution systems
Author :
Oda, Kazuhiro ; Toba, Hiromu ; Nakanishi, Kenji
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
Abstract :
A tuning technique for 10 GHz spaced, 128-channel frequency-selection switches is described. It utilizes optical frequency division multiplexing (OFDM) information distribution systems with a frequency-shift-keying-direct-detection (FSK-DD) configuration. The frequencies of seven Mach-Zehnder (MZ) filters can be locked to the center frequency of the desired FSK signal by making use of FSK-ASK conversion effects of the transmittance characteristics of the MZ filters. The frequency offset and fluctuation of the MZ filters can be compressed to within 2% of their frequency spacing. This percentage is low enough to construct OFDM information distribution systems
Keywords :
frequency division multiplexing; frequency shift keying; optical filters; optical links; tuning; FSK signal; center frequency; frequency offset; frequency selection switches; frequency-shift-keying-direct-detection; optical FDM information distribution systems; optical frequency division multiplexing; transmittance characteristics; tuning technique; Frequency shift keying; OFDM; Optical fiber filters; Optical filters; Optical mixing; Optical receivers; Optical sensors; Optical switches; Optical tuning; Optical waveguides;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188632
