IP Library › Granted Patent US 12,494,842
Granted Patent B2
US 12,494,842 · App. 18/329,409 · Granted Dec 9, 2025

Optical link optimization based on signal and interferer power discrimination

Inventors: Tom Luk (Ottawa, CA); David W. Boertjes (Nepean, CA)
Assignee: Ciena Corporation
H04B10/0797H03G3/3036H03M1/12H04B10/07955H04J14/0221
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Quick Facts
Patent No.
US 12,494,842
App. No.
18/329,409
Granted
Dec 9, 2025
Kind
B2
Abstract

An optical link optimization includes receiving detected power outputs from one or more receivers in an optical network, wherein the detected power outputs include both a broad bandwidth power component and a low bandwidth power component; analyzing the detected power outputs to one or more of (1) balance power of a channel of interest for the one or more receivers and associated adjacent channels to a given channel of interest and (2) adjust filtering of the channel of interest for the one or more receivers and the associated adjacent channels to the given channel of interest; and configuring one or more components of the optical network to provide the one or more of (1) balance power and (2) adjust filtering.

Claims (54)

1 . A non-transitory computer-readable medium comprising instructions that, when executed, cause one or more processors to perform steps of:

receiving detected power outputs from one or more receivers connected to an optical fiber in an optical network, wherein the detected power outputs include both a broad bandwidth power component and a low bandwidth power component;

analyzing the detected power outputs to one or more of ( 1 ) balance power of a channel of interest for the one or more receivers and associated adjacent channels to a given channel of interest and ( 2 ) adjust filtering of the channel of interest for the one or more receivers and the associated adjacent channels to the given channel of interest; and

configuring one or more components of the optical network to provide the one or more of ( 1 ) balance power and ( 2 ) adjust filtering, wherein the configuring to adjust filtering includes one or more of

configuring one or more ports on a Wavelength Selective Switch;

configuring one or more tunable filters;

adjusting a modulation format of one or more transmitters;

adjusting lasers in the one more transmitters;

configuring one or more Gain Flattening Filters; and

configuring a quardband between the channel of interest and its associated adjacent channels.

2 . The non-transitory computer-readable medium of claim 1 , wherein the configuring to balance power includes one or more of

adjusting transmitter powers;

adjusting amplifier gain;

configuring one or more Variable Optical Attenuators; and

configuring one or more ports on a Wavelength Selective Switch.

3 . The non-transitory computer-readable medium of claim 1 , wherein the broad bandwidth power component includes power of the channel of interest and any of the associated adjacent channels, and wherein the low bandwidth power component includes power of the channel of interest.

4 . The non-transitory computer-readable medium of claim 3 , wherein the broad bandwidth power component and the low bandwidth power component provide discrimination of between power of the channel of interest and the associated adjacent channels.

5 . The non-transitory computer-readable medium of claim 1 , wherein the optical fiber is part of a point-to-point link in the optical network.

6 . The non-transitory computer-readable medium of claim 1 , wherein the optical fiber includes a plurality of channels being Wavelength Division Multiplexed thereon.

7 . The non-transitory computer-readable medium of claim 6 , wherein at least two of the plurality of channels has a spacing between one another without a guardband therebetween.

8 . The non-transitory computer-readable medium of claim 1 , wherein the analyzing utilizes a machine learning model with the detected power outputs being an input thereto.

9 . A method comprising steps of:

receiving detected power outputs from one or more receivers connected to an optical fiber in an optical network, wherein the detected power outputs include both a broad bandwidth power component and a low bandwidth power component;

analyzing the detected power outputs to one or more of (1) balance power of a channel of interest for the one or more receivers and associated adjacent channels to a given channel of interest and (2) adjust filtering of the channel of interest for the one or more receivers and the associated adjacent channels to the given channel of interest; and

configuring one or more components of the optical network to provide the one or more of (1) balance power and (2) adjust filtering, wherein the configuring to adjust filtering includes one or more of

configuring one or more ports on a Wavelength Selective Switch;

configuring one or more tunable filters;

adjusting a modulation format of one or more transmitters;

adjusting lasers in the one more transmitters;

configuring one or more Gain Flattening Filters; and

configuring a quardband between the channel of interest and its associated adjacent channels.

10 . The method of claim 9 , wherein the configuring to balance power includes one or more of adjusting transmitter powers;

adjusting amplifier gain;

configuring one or more Variable Optical Attenuators; and

configuring one or more ports on a Wavelength Selective Switch.

11 . The method of claim 9 , wherein the broad bandwidth power component includes power of the channel of interest and any of the associated adjacent channels, and wherein the low bandwidth power component includes power of the channel of interest.

12 . The method of claim 11 , wherein the broad bandwidth power component and the low bandwidth power component provide discrimination of between power of the channel of interest and the associated adjacent channels.

13 . The method of claim 9 , wherein the optical fiber is part of a point-to-point link in the optical network.

14 . The method of claim 9 , wherein the optical fiber includes a plurality of channels being Wavelength Division Multiplexed thereon.

15 . The method of claim 14 , wherein at least two of the plurality of channels has a spacing between one another without a guardband therebetween.

16 . The method of claim 9 , wherein the analyzing utilizes a machine learning model with the detected power outputs being an input thereto.

17 . A non-transitory computer-readable medium comprising instructions that, when executed, cause one or more processors to perform steps of:

receiving detected power outputs from one or more receivers connected to an optical fiber in an optical network, wherein the detected power outputs include both a broad bandwidth power component and a low bandwidth power component;

analyzing the detected power outputs to one or more of (1) balance power of a channel of interest for the one or more receivers and associated adjacent channels to a given channel of interest and (2) adjust filtering of the channel of interest for the one or more receivers and the associated adjacent channels to the given channel of interest; and

configuring one or more components of the optical network to provide the one or more of (1) balance power and (2) adjust filtering,

wherein the broad bandwidth power component includes power of the channel of interest and any of the associated adjacent channels, and wherein the low bandwidth power component includes power of the channel of interest, and

wherein the broad bandwidth power component and the low bandwidth power component provide discrimination of between power of the channel of interest and the associated adjacent channels.

18 . The non-transitory computer-readable medium of claim 17 , wherein the configuring to balance power includes one or more of

adjusting transmitter powers;

adjusting amplifier gain;

configuring one or more Variable Optical Attenuators; and

configuring one or more ports on a Wavelength Selective Switch.

19 . The non-transitory computer-readable medium of claim 17 , wherein the optical fiber is part of a point-to-point link in the optical network.

20 . The non-transitory computer-readable medium of claim 17 , wherein the optical fiber includes a plurality of channels being Wavelength Division Multiplexed thereon.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 5, 2023
From: LUK, TOM; BOERTJES, DAVID W.
To: CIENA CORPORATION
Reel/Frame 063858/0022 →
Continuity (3)
Continuation In Part PCTUS2021062117 · Dec 7, 2021
Continuation 17116461 · Dec 9, 2020
Related Publication 20230318729A1 · Oct 5, 2023
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