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US 9,432,113 B2Granted
Optical transmission device
AssigneeFujitsu Limited
InventorsHiroki Oi, Kosuke Komaki
Life of this patent
Estimating the term…
Abstract
An optical transmission device including a wavelength selective switch including plural output ports, an optical intensity monitoring device that receives each optical signal output from the plural output ports of the wavelength selective switch and monitors the optical intensity of the optical signals, and a controller that controls optical intensity of the optical signals from the plural output ports of the wavelength selective switch based on the optical intensities monitored by the optical intensity monitoring device.
Claims5
An optical transmission device comprising:
- a first wavelength selective switch that includes a plurality of output ports, and is disposed at a drop side of the optical transmission device;
- a second wavelength selective switch is disposed at an add side of the optical transmission device;
- an optical switch switches between a first optical signal based on optical signals output respectively from the plurality of output ports of the first wavelength selective switch, and a second optical signal based on an optical signal output from an output port of the second wavelength selective switch, selects a signal from the first optical signal and the second optical signal and outputs the selected optical signal;
- an optical channel monitor monitors optical intensities of the optical signals output from the optical switch;
- and
- a controller that controls optical intensities of the optical signals from the plurality of output ports of the first wavelength selective switch and an optical intensity of the optical signal from the output port of the second wavelength selective switch respectively, based on the optical intensities monitored by the optical channel monitor device.
3 more elements
An optical transmission method comprising:
- switching and outputting, by an optical switch, between optical signals output respectively from a first wavelength selective switch that includes a plurality of output ports and that is disposed at a drop side of an optical transmission device, and an optical signal from an output port of a second wavelength selective switch disposed at an add side of the optical transmission device;
- monitoring optical intensities of the optical signals output from the optical switch;
- and
- controlling optical intensities of the optical signals from the plurality of output ports of the first wavelength selective switch, and an optical intensity of the optical signal from the output port of the second wavelength selective switch respectively, based on the monitored optical intensities.
1 more element
Dependencies are inferred from the claim text.