Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2006-07-11
2006-07-11
Lee, Michael G. (Department: 2876)
Optical waveguides
With optical coupler
Plural
Reexamination Certificate
active
07076128
ABSTRACT:
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.
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Blondel Jean-Pierre
Boubal François
Brandon Eric
Buet Laurence
Havard Vincent
Alcatel
Labaze Edwyn
Lee Michael G.
Sughrue & Mion, PLLC
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