Title :
Optical fiber multifrequency SWFM transmission system for sending low-speed parallel data
Author :
Wu, Yuying ; Ikeda, Hiroaki ; Kodera, Hiroki ; Yoshida, Hirofumi ; Shinohara, Shigenobu
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
Presented 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 then transmitted through a single optical fiber. The system can send 8-bit parallel data with a low speed of 5 kbps, but in a long distance of 2 km through a multi-mode optical fiber. In addition, because of the excellent stability against EMI, the proposed system can be used in inferior environment to transmit the statuses or the manual control signals between sensors and monitors in both directions for various industrial uses
Keywords :
data communication systems; frequency modulation; optical links; 2 km; 5 kbit/s; 8 bit; 8-bit parallel data; EMI; bidirectional transmission; industrial uses; low-speed parallel data; multi-mode optical fiber; multifrequency parallel signals; optical fiber multifrequency SWFM transmission; optical fiber parallel data transmission; single optical fiber; squarewave carrier; squarewave frequency modulation; stability; Converters; Data communication; Electromagnetic interference; Frequency modulation; Light emitting diodes; Optical fibers; Optical pulses; Propagation losses; Signal to noise ratio; Wire;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE
Conference_Location :
Hamamatsu
Print_ISBN :
0-7803-1880-3
DOI :
10.1109/IMTC.1994.352086
