Title :
Bidirectional audio and video signal transmission system by optical wavelength division multiplexed scheme
Author :
Li, Jinzhu ; Ikeda, Hiroaki ; Yoshida, Hirofumi ; Awoki, Kazuya ; Fujita, Hiroyuki ; Shinohara, Shigenobu ; Tsuchiya, Etsuo ; Nishimura, Ken-ichi
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
Describes a novel wavelength division multiplexed 850/1300 nm system for bidirectionally transmitting square wave frequency modulated (SWFM) audio and video signals and PCM (pulse code modulation) FSK (frequency shift keying) data. One channel for the composite audio-video signal and four channels for PCM data are provided to concurrently transmit SWFM signals in both directions through an optical fiber. The audio signal distortion was 0.5% with a signal-to-noise ratio (SNR) of 70 dB. The distortion when PCM data were used for the voice signal was 1.0% with an SNR of 60 dB. The DG and DP for the video signal were under 5% and 5° with an SNR of 50 dB
Keywords :
frequency modulation; optical fibres; optical links; pulse-code modulation; video signals; wavelength division multiplexing; 1300 nm; 850 nm; FSK; PCM; SNR; SWFM signals; audio signal distortion; bidirectional audio/video signal transmission; composite audio-video signal; optical fiber; optical wavelength division multiplexed scheme; signal-to-noise ratio; square wave frequency modulated; voice signal; Frequency modulation; Frequency shift keying; Modulation coding; Optical distortion; Optical frequency conversion; Optical modulation; Optical pulses; Phase change materials; Pulse modulation; Wavelength division multiplexing;
Conference_Titel :
Circuits and Systems, 1991., Proceedings of the 34th Midwest Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-0620-1
DOI :
10.1109/MWSCAS.1991.252023
