Title :
Bidirectional parallel data transmission with an optical fiber
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 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 in a long distance of 2 km by a multimode GI optical fiber. In addition, because of the excellent stability against EMI, the proposed system can be used in inferior environment to transmit the output signals of the temperature sensors from the testing room to the control center and the manual control signals from the control center to the testing room at the same time for various industrial uses
Keywords :
data communication equipment; frequency modulation; optical cables; optical links; temperature sensors; 8 bit parallel data; EMI; bidirectional parallel data transmission; control center; multifrequency parallel signals; multimode GI optical fiber; optical fiber parallel data transmission system; output signals; squarewave carrier; squarewave frequency modulation; temperature sensors; testing room; Control systems; Data communication; Electromagnetic interference; Frequency modulation; Human factors; Optical fibers; Stability; System testing; Temperature control; Temperature sensors;
Conference_Titel :
Industrial Technology, 1994., Proceedings of the IEEE International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
0-7803-1978-8
DOI :
10.1109/ICIT.1994.467062
