Optical communications – Transmitter and receiver system – Plural stations
Reexamination Certificate
2004-08-24
2008-05-20
Pascal, Leslie (Department: 2613)
Optical communications
Transmitter and receiver system
Plural stations
C398S038000, C398S083000
Reexamination Certificate
active
07376355
ABSTRACT:
An optical transmission apparatus includes a return line for connecting a first transmission line and a second transmission line opposed to the first transmission line in order to make it possible to commonly use a transmitter-receiver or a repeater, for example, between a trunk line and a branch line and prevent a situation that the power of branched signal lights increases excessively. The optical transmission apparatus is configured so that dummy lights inputted together with signal lights to be added to signal lights transmitted through the first transmission line are sent to the second transmission line through the return line and are outputted together with signal lights to be dropped from the second transmission line.
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patent: HEI 10-28106 (1998-01-01), None
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French Patent Office Preliminary Search Report dated Feb. 21, 2006, in counterpart French Patent Application No. 0410000000.
Fujitsu Limited
Pascal Leslie
Staas & Halsey , LLP
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