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AssigneeAlcatel
InventorsEric Brandon, Laurent Labrunie, Jean-Pierre Blondel, Francois Boubal, Laurence Buet, Vincent Havard, Patrice Le Roux
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The invention refers to a safety procedure for optical fiber systems. Such systems are widely used in telecommunication to transport optical signals between a transmitter terminal and a receiver terminal. By the invented safety procedure the optical input power fed into said optical fiber system is automatically shut off or at least reduced in case of an unintended escape of light from at least one fiber. A safety interface, provided in the transmission line detects changes of the total optical output power in at least one fiber and initiates a shut-down of the input power as soon as a decrease of the total output power is detected, that exceeds a predefined value within a predefined time window. Thus the slope of the total output power is measured and evaluated rather than its absolute value.
Safety procedure for optical fiber systems, transporting optical signals between a transmitter terminal and a receiver terminal, with at least one pump source to enhance said optical signal, by which safety procedure the optical input power fed into said optical fiber system is automatically shut off or at least reduced in case of an unintended escape of light from at least one fiber, wherein
Safety procedure according to claim l, wherein in case of a safety shut-down only the pump sources of those fiber are shut down, in which a failure has been detected.
Safety interface for optical fiber systems, transporting optical signals between a transmitter terminal and a receiver terminal, with at least one pump source to enhance said optical signal, wherein
Dependencies are inferred from the claim text.