DocumentCode
1231332
Title
Optical Communications in Japan
Author
Saito, Shigebumi
Author_Institution
Univ. of Tokyo, Tokyo, Japan
Volume
20
Issue
4
fYear
1972
fDate
8/1/1972 12:00:00 AM
Firstpage
725
Lastpage
730
Abstract
This paper reviews research and developmental activities in optical communications currently under way in Japan. Three major systems: 1) atmospheric optical communication systems, 2) optical-cable systems, and 3) lens-waveguide systems, using various types of lasers and newly developed optical devices and components, have been extensively studied at the Electrical Communication Laboratories of Nippon Telegraph and Telephone (NTT) and other electronic manufacturing companies in Japan.
Keywords
Bandwidth; Coaxial cables; Laboratories; Optical attenuators; Optical devices; Optical fiber communication; Optical waveguides; Power lasers; Repeaters; Telegraphy;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1972.1091240
Filename
1091240
Link To Document