Systems and methods modeling optical sources in optical spectrum controllers for control thereof

• US 9,986,317 B1
• Filed: 11/29/2016
• Issued: 05/29/2018
• Est. Priority Date: 11/29/2016
• Status: Active Grant

• Current Assignee: Ciena Corporation
• Original Assignee: Ciena Corporation
• Inventors: Al Sayeed, Choudhury A., Bownass, Dave C., Chen, Edward
• Primary Examiner(s): Tran, Dzung
• Application Number:
  US15/363,255
• Publication Number:
  US 20180152772A1
• Time in Patent Office: 546 Days
• CPC Class Codes: H04J 14/0212 using optical switches or wavelength selective switches [WSS]
• CPC Class Codes: H04J 14/02122 Colourless, directionless or contentionless [CDC] arrangements
• CPC Class Codes: H04J 14/0257 Wavelength assignment algorithms
• CPC Class Codes: H04J 14/0271 Impairment aware routing
• CPC Class Codes: H04J 14/0272 Transmission of OAMP information
• CPC Class Codes: H04Q 11/0062 Network aspects

Abstract

Systems and methods for modeling non-visible optical sources in a spectrum controller for control thereof include receiving channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by optical transceivers without communication to the spectrum controller; utilizing a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller; performing control of optical spectrum based on the input; and providing output adjustments based on the control.

Claims

1. A method for modeling non-visible optical sources generating optical signals coming to the input of a spectrum controller in a single fiber for control thereof in an optical network, the method comprising:

receiving channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by one or more first optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by one or more second optical transceivers without communication to the spectrum controller;

utilizing a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller;

performing control of optical spectrum based on the input; and

providing output adjustments based on the control,

wherein, for the non-visible channels, fiber loss from an associated source of each of the non-visible channels is modeled as insertion loss into a virtual port for modeling the non-visible channels.

2. The method of claim 1, wherein the output adjustments comprise

i) output power adjustments of each of the one or more first optical transceivers and the one or more second optical transceivers, and

ii) gain adjustments to one or more amplifiers.

3. The method of claim 1, wherein the output adjustments are automatically implemented in the one or more first optical transceivers and provided as recommendations for manual implementation in the one or more second optical transceivers.

4. The method of claim 1, wherein the second optical transceivers comprise any of i) one or more bulk channel sources for channel loading and ii) one or more third-party optical transceivers which provide foreign channels supported in the optical network.

5. The method of claim 1, wherein the channel routing information comprises a source port at a channel access point and a destination degree;

and

wherein the signal characteristics comprise a plurality of control or center frequency, spectral shape, required bandwidth, spectral spacing compared to neighboring signals, total signal power or power spectral density at the source port, target launch power, modulation, and signal-to-noise ratio bias preferences compared to neighboring signals.

6. The method of claim 1, wherein the channel routing information and signal characteristics for the non-visible channels is modeled as a virtual colorless multiplexer/demultiplexer with N ports, N being an integer greater than or equal to 1, and with associated insertion losses on each port to model multiplexing/demultiplexing structure, wherein each port can model any signal from any spectral location.

7. The method of claim 1, wherein the channel routing information and signal characteristics for the non-visible channels is modeled as an array of logical source and sink mappings.

8. The method of claim 1, wherein, for the non-visible channels, the signal characteristics for one port are independent of the signal characteristics of another port.

9. The method of claim 1, wherein each of the non-visible channels is mapped as a logical cross-connect facility independent of other of the non-visible channels.

10. The method of claim 1, wherein the spectrum controller operates on an optical section with the visible channels and the non-visible channels.

20. The method of claim 10, wherein the output adjustments comprise

i) output power adjustments of each of the one or more first optical transceivers and the one or more second optical transceivers, and

ii) gain adjustments to one or more amplifiers.

11. A spectrum controller adapted to model non-visible optical sources for control thereof in an optical network, the spectrum controller comprising:

a processor;

a communications interface communicatively coupled to the processor; and

memory storing instructions that, when executed, cause the processor to

receive, via the communications interface, channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by optical transceivers without communication to the spectrum controller,

utilize a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller,

perform control of optical spectrum based on the input, and

provide output adjustments based on the control,

wherein, for the non-visible channels, fiber loss from an associated source of each of the non-visible channels is modeled as insertion loss into a virtual port for modeling the non-visible channels.

12. The spectrum controller of claim 11, wherein the output adjustments comprise

i) output power adjustments of each of the one or more first optical transceivers and the one or more second optical transceivers, and

ii) gain adjustments to one or more amplifiers.

13. The spectrum controller of claim 11, wherein the output adjustments are automatically implemented in the one or more first optical transceivers and provided as recommendations for manual implementation in the one or more second optical transceivers.

14. The spectrum controller of claim 11, wherein the second optical transceivers comprise any of i) one or more bulk channel sources for channel loading and ii) one or more third-party optical transceivers which provide foreign channels supported in the optical network.

15. The spectrum controller of claim 11, wherein the channel routing information comprises a source port at a channel access point and a destination degree;

and

wherein the signal characteristics comprise a plurality of control or center frequency, spectral shape, required bandwidth or spectral spacing compared to neighboring signals, total signal power or power spectral density at the source port, target launch power, modulation, and signal-to-noise ratio bias preferences compared to neighboring signals.

16. The spectrum controller of claim 11, wherein the channel routing information and signal characteristics for the non-visible channels is modeled as a virtual colorless multiplexer/demultiplexer with N ports, N being an integer greater than or equal to 1, and with associated insertion losses on each port to model multiplexing structure.

17. The spectrum controller of claim 11, wherein the channel routing information and signal characteristics for the non-visible channels is modeled as an array of logical source and sink mappings.

18. The spectrum controller of claim 11, wherein, for the non-visible channels the signal characteristics for one port are independent of the signal characteristics of another port, and fiber loss from an associated source of each of the non-visible channels is modeled as insertion loss into a virtual port for modeling the non-visible channels.

19. A method for modeling non-visible optical sources generating optical signals coming to the input of a spectrum controller in a single fiber for control thereof in an optical network, the method comprising:

receiving channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by one or more first optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by one or more second optical transceivers without communication to the spectrum controller;

utilizing a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller;

performing control of optical spectrum based on the input; and

providing output adjustments based on the control,

wherein the channel routing information and signal characteristics for the non-visible channels is modeled as a virtual colorless multiplexer/demultiplexer with N ports, N being an integer greater than or equal to 1, and with associated insertion losses on each port to model multiplexing/demultiplexing structure, wherein each port can model any signal from any spectral location.