Dynamic wavelength service over a roadm optical network
First Claim
1. A system for creating a wave division multiplexing virtual private network by dynamically adding/dropping wavelengths in a reconfigurable optical add-drop multiplexer (ROADM) transport network having at least one optical transponder, comprising:
- a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees;
a plurality of demultiplexers for locally dropping selected wavelengths;
a plurality of multiplexers for locally adding selected wavelengths; and
at least one customer-dedicated fiber switch interposed between the at least one optical transponder and the plurality of demultiplexers and multiplexers, the customer-dedicated fiber switch being coupled to wavelengths and degrees to reserve wavelengths for the customer.
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Accused Products
Abstract
A system and method for dynamically adding/dropping wavelengths in a reconfigurable optical add-drop multiplexer (ROADM) transport network to form a wave division multiplexing virtual private network is disclosed. The system includes at least one optical transponder, a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees; a plurality of demultiplexers for locally dropping selected wavelengths; a plurality of multiplexers for locally adding selected wavelengths; and at least one customer-dedicated fiber switch interposed between the at least one optical transponder and the plurality of demultiplexers and multiplexers. The fiber switch is coupled to wavelengths and degrees that are allocated for a bandwidth-on-demand application. Other configurations include additional fan-in and fan-out devices interposed between a mux/demux assembly and the optical transponders to support wavelength redistribution applications.
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Citations
12 Claims
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1. A system for creating a wave division multiplexing virtual private network by dynamically adding/dropping wavelengths in a reconfigurable optical add-drop multiplexer (ROADM) transport network having at least one optical transponder, comprising:
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a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees; a plurality of demultiplexers for locally dropping selected wavelengths; a plurality of multiplexers for locally adding selected wavelengths; and at least one customer-dedicated fiber switch interposed between the at least one optical transponder and the plurality of demultiplexers and multiplexers, the customer-dedicated fiber switch being coupled to wavelengths and degrees to reserve wavelengths for the customer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for creating a wave division multiplexing virtual private network by dynamically adding/dropping wavelengths in a reconfigurable optical add-drop multiplexer (ROADM) transport network comprising:
- a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees;
a plurality of demultiplexers for locally dropping selected wavelengths; and
a plurality of multiplexers for locally adding selected wavelengths, comprising;connecting at least one customer-dedicated fiber switch between at least one optical transponder and the plurality of demultiplexers and multiplexers, the customer-dedicated fiber switch being coupled to wavelengths and degrees to reserve wavelengths for the customer. - View Dependent Claims (9, 10, 11)
- a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees;
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12. A method for creating a wave division multiplexing virtual private network by dynamically adding/dropping wavelengths in a reconfigurable optical add-drop multiplexer (ROADM) transport network comprising:
- a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees;
a plurality of demultiplexers for locally dropping selected wavelengths; and
a plurality of multiplexers for locally adding selected wavelengths, comprising;connecting pairs of 1×
N fiber switches between each of a plurality of optical transponders and the plurality of demultiplexers and multiplexers, each multiplexer and demultiplexer comprising a wavelength selective switch; andprovisioning a set of wavelengths for a customer by setting the wavelengths on ports of each 1×
N fiber switch and the multiplexers and demultiplexers.
- a plurality of optical fan-out devices, each arranged to receive an input signal from a network degree and coupled to at least one of a plurality of optical fan-in devices, each optical fan-in device arranged to output a signal to a network degree, the optical fan-out devices comprising at least one wavelength selective switch and the optical fan-in devices comprising at least one wavelength selective switch, the optical fan-out devices and optical fan-in devices being connected so as to enable signals input from each of the plurality of network degrees to be switched to another network degree of the plurality of network degrees;
Specification