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AssigneeNippon Telegraph and Telephone Corporation
InventorsHiroki Kawahara, Takeshi Seki, Sachio Suda, Kohei Saito
Estimating the term…
A wavelength cross-connect device performs a relay process in which multiple wavelength signal light beams that have been transmitted in multiple bands from a plurality of paths and demultiplexed into optical signals in the respective wavelength bands for each path are amplified, are switched to paths by contention WSSs, and are output to paths on the output side. A WXC unit performs the relay process on an optical signal in a specific wavelength band. An input-side conversion unit that converts a wavelength band other than the specific wavelength band into the specific wavelength band is provided on the input side, and an output-side conversion unit that converts the specific wavelength band after the conversion into the wavelength band prior to the conversion is provided on the output side. A directly-input optical signal in the specific wavelength band is directly output after the relay process at the WXC unit.
A wavelength cross-connect device configured to perform a relay process of amplifying, with an optical amplifier, optical signals in respective wavelength bands provided by demultiplexing multiple wavelength signal light into different wavelength bands for each of a plurality of paths, changing paths with a contention wavelength selective switch (WSS) having a plurality of input ends and a plurality of output ends, and outputting the optical signals to a path on an output side, the multiple wavelength signal light being provided by multiplexing respective optical signals in a plurality of wavelength bands transmitted in multiple bands through an optical transmission line including at least one optical fiber, the wavelength cross-connect device comprising:
A wavelength cross-connect method implemented by a wavelength cross-connect device, the wavelength cross-connect device performing a relay process of amplifying, with an optical amplifier, optical signals in respective wavelength bands provided by demultiplexing multiple wavelength signal light into different wavelength bands for each of a plurality of paths, changing paths with a contention WSS having a plurality of input ends and a plurality of output ends, and outputting the optical signals to a path on an output side, the multiple wavelength signal light being provided by multiplexing respective optical signals in a plurality of wavelength bands transmitted in multiple bands from a plurality of paths including at least one optical fiber into one path, wherein the wavelength cross-connect device includes a wavelength cross-connect (WXC) unit that includes the optical amplifier and the contention WSS, the wavelength cross-connect method comprising:
Dependencies are inferred from the claim text.