Apparatus for bidirectional transmission of optical signals

Details Apparatus for bidirectional transmission of optical signals Apparatus for bidirectional transmission of optical signals

1989-12-07

1991-06-25

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455617, 455609, 455612, 455613, H04B 1000

Patent

active

050274341

ABSTRACT:
Apparatus for bidirectional transmission of optical signals between two stations connected by a light transmission path of optical fibers, each station including a laser module comprised of a laser diode and an adjacent monitor diode, the latter performing the dual functions of detecting light emitted by such laser diode in its transmission mode, and for detecting light transmitted from the other station when such adjacent laser diode is not in its transmission mode.

REFERENCES:
patent: 4321707 (1982-03-01), Beasley et al.
patent: 4504976 (1985-03-01), Beaudet
patent: 4553268 (1985-11-01), Tilly
patent: 4637072 (1987-01-01), Hellstrom
patent: 4720827 (1988-01-01), Kanaji
Valvo, Jun. 1988, p. 113.

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