Light signal transmission system

Details Light signal transmission system Light signal transmission system

1989-09-22

1991-06-25

Lee, John D.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455607, 455612, G02B 628

Patent

active

050261371

ABSTRACT:
A light signal transmission system comprises first, second and third terminal stations each having a light transmitter and a light receiver, first and second light transmission paths having one end connected to the first and second terminal stations, respectively, and connectors for connecting the other ends of the first and second light transmission paths to the third terminal station, the connectors being designed that a light signal transmitted from the first terminal station through the first light transmission path is inputted to the third terminal station, a light signal emitted from the third terminal station is inputted to the second terminal station through said second light transmission path, and a light signal emitted from said second terminal station is inputted to the first terminal station through the first and second light transmission paths, without through the third terminal station.

REFERENCES:
patent: 4294509 (1981-10-01), Nagao
patent: 4317614 (1982-03-01), Palmer
patent: 4511208 (1985-04-01), Ozeki et al.
patent: 4662715 (1987-05-01), Shutterly
patent: 4707061 (1987-11-01), McMahon
patent: 4727601 (1988-02-01), Konishi
patent: 4815027 (1989-03-01), Tokumitsu et al.

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