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US 2019/0379479 A1Published application
Construction of optical nodes using programmable roadms
OwnerMark E. Boduchinventor
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Abstract
Example embodiments of the present invention relate to programmable ROADMs used to construct optical nodes. Example embodiments include wavelength switches and waveguide switches, wherein the waveguide switches may be programmed to direct wavelength division multiplexed optical signals to and from the wavelength switches.
Claims20
An optical node comprising:
- a first optical degree;
- a second optical degree;
- a first plurality of drop ports;
- a second plurality of drop ports;
- a first wavelength switch, used to select individual wavelengths for the first plurality of drop ports;
- a second wavelength switch, used to select individual wavelengths for the second plurality of drop ports;
- and
- a plurality of waveguide switches, operable to be set to a first mode and to a second mode,
- wherein when the plurality of waveguide switches are set to the first mode, the first plurality of drop ports are operable to drop wavelengths from the first optical degree and from the second optical degree, and the second plurality of drop ports are operable to drop wavelengths from the first optical degree and from the second optical degree, and wherein when the plurality of waveguide switches are set to the second mode, the first plurality of drop ports are operable to drop wavelengths only from the first optical degree, and the second plurality of drop ports are operable to drop wavelengths only from the second optical degree.
6 more elements
An optical node comprising:
- a first optical degree;
- a second optical degree;
- a plurality of drop ports;
- a wavelength switch, used to select individual wavelengths for the plurality of drop ports;
- and
- a waveguide switch, operable to be set to a first mode and to a second mode, wherein when the waveguide switch is set to the first mode, the plurality of drop ports are operable to drop wavelengths from the first optical degree and from the second optical degree, and wherein when the waveguide switch is set to the second mode, the plurality of drop ports are operable to drop wavelengths only from the first optical degree.
3 more elements
A reconfigurable optical add drop multiplexer of a first optical node comprising:
- an optical degree output port used to connect the first optical node to a second optical node;
- a plurality of optical express input ports, used to connect the reconfigurable optical add drop multiplexer of the first optical node to additional reconfigurable optical add drop multiplexers within the first optical node;
- a wavelength switch, used to switch individual wavelengths within wavelength division multiplexed optical signals;
- and
- a plurality of waveguide switches that are programmable to perform a first function and a second function,
- wherein when the plurality of waveguide switches are programmed to perform the first function, the wavelength switch passes and blocks individual wavelengths to the optical degree output port from m number of the plurality of optical express input ports, and wherein when the plurality of waveguide switches are programmed to perform the second function, the wavelength switch passes and blocks individual wavelengths to the optical degree output port from r number of the plurality of optical express input ports, wherein r>m.
3 more elements
Dependencies are inferred from the claim text.