Title :
Optical fiber multifrequency SWFM transmission system for bidirectional data transmission
Author :
Wu, Yuying ; Ikeda, Hiroaki ; Yoshida, Hirofumi ; Shinohara, Shigenobu
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
Described is a new type of optical fiber parallel data transmission system utilizing the multifrequency parallel signals. The multifrequency parallel signals are used to modulate the squarewave carrier by squarewave frequency modulation (SWFM) scheme, and transmitted through a single optical fiber. The system can send 8-bit parallel data at a low speed of 5 kbps, but for the longer distance of 2 km, by a multi-mode GI optical fiber. In addition, because of the excellent stability against EMI, the proposed system can be used in inferior environments to transmit the signals of sensors and the manual control signals between sensors and monitors in both directions for industrial use
Keywords :
data communication; frequency modulation; optical fibre communication; 5 kbit/s; 8-bit parallel data; EMI immunity; bidirectional data transmission; industrial use; multi-mode GI optical fiber; multifrequency parallel signals; optical fiber multifrequency SWFM transmission system; squarewave frequency modulation; Circuits; Converters; Data communication; Frequency division multiplexing; Light emitting diodes; Optical fibers; Optical pulses; Sensor systems; Signal generators; Wire;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377684
