Wavelength division multiplex optical star coupler, communication station, and optical transmission system
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United States of America Patent
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Apr 19, 2005
Grant Date -
Dec 20, 2001
app pub date -
Aug 17, 2001
filing date -
Aug 31, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A wavelength division multiplex optical star coupler comprises an input port which inputs a first optical signal, a first optical coupler which divides the first optical signal input from the input port into a plurality of first optical signals, a plurality of input/output ports, each of which outputs one of the plurality of first optical signals divided by the first optical coupler and inputs a second optical signal, an output port which outputs the second optical signal, and a second optical coupler, provided between the input port and the first optical coupler or between the first optical coupler and the input/output ports, which provides the first optical signal to the input/output ports and the second optical signal to the output port.
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