Optical transmission device
AssigneeNEC Corporation
InventorsYurie MATSUYAMA, Takefumi OGUMA
Life of this patent
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Abstract
[Problem] To provide an optical transmission device that, while suppressing band narrowing due to optical filters, achieves flexibility of optical communication such as wavelength reutilization and that supports a flexible grid. [Solution] An optical transmission device according to the present invention is provided with a cyclic AWG that filters respective optical signals inputted to each input port. The respective optical signals are constituted so that a plurality of wavelength-multiplexed signals can be allocated within one channel band, the respective optical signals are filtered in channel units, and the pass-band width of each of the input ports of the cyclic AWG corresponds to the bandwidth of a channel.
Claims14
An optical transmission device comprising
- a cyclic AWG that filters respective optical signals inputted to each input port,
- wherein the respective optical signals are constituted so that a plurality of wavelength-multiplexed signals can be allocated within one channel band,
- the respective optical signals are filtered in channel units, and
- pass-band width of each of the input ports of the cyclic AWG corresponds to bandwidth of each of the channel.
A transmission method of optical signals comprising,
- with respect to each of input ports of a cyclic AWG in which pass-band width of each of the input ports corresponds to bandwidth of each channel:
- inputting a plurality of channels of wavelength-multiplexed signals where a plurality of optical signals are wavelength-multiplexed within a band of each of the channels;
- and
- filtering and outputting the wavelength-multiplexed signals in channel units.
Dependencies are inferred from the claim text.