Patent · US Expired

Apparatus for bidirectional transmission of optical signals

US5027434A · kind A · utility

9Cited by

5References

5Claims

0Family size

Assignee

ke Kommunikations-Eletronik GmbH & Co. · DE

Inventors

Martin Brahms · Hannover, DE
Ziaedin Chahabadi · Bad Münder am Deister, DE
Johannes Ocker · Dresden, DE

Key dates

Filing date	Dec 7, 1989
Grant date	Jun 25, 1991
Priority date	—
Expiry date	Dec 7, 2009

Classification

Technology area (CPC H)Electricity
CPC primaryH04B10/2589
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.