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AssigneeRobert Bosch GmbH
InventorsJan Koeppen, Guenter Neumann, Hans Lausen, Lutz Bersiner
Estimating the term…
For checking the transmission in an optical transmission installation with optical fibers for conducting optical useful signals between signal sources and signal acceptors (S/D), at which optical useful signals are coupled into or outcoupled from the optical fibers, which signals can be diverted to substitute paths at nodes (OCC) of the transmission device, checking signals (LS) are transmitted in both directions between the signal sources and signal acceptors (S/D) and nodes (OCC) as applicable in the respective optical fiber for at least one useful signal. The presence of the checking signals (LS) is checked, and in the absence of a checking signal (LS) from one line direction, the transmission of a checking signal (LS) in the opposite direction is suppressed. In this way it is assured that on both sides of a line problem, this problem will be detected and an alarm will be tripped if necessary, or a switchover will be made to a substitute path.
A method of checking a transmission in an optical transmission installation with optical fibers for conducting optical useful signals between signal sources and signal acceptors, at which optical useful signals are coupled into the optical fibers and decoupled from these fibers, which signals are divertable to substitute paths at nodes of a transmission device, the method comprising the steps of transmitting checking signals for at least one useful signal between the signal sources and the signal acceptors and the nodes;
An optical transmission installation, comprising optical fibers for conducting optical useful signals between signal sources and signal acceptors at which optical useful signals are coupleable into or uncoupleable from the optical fiber;
Dependencies are inferred from the claim text.