Method and apparatus for calibrating waveguide systems to manage propagation delays of electromagnetic waves

Patent metadata

Field	Value
Publication number	US-11070250-B2
Application number	US-201916701304-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Dec 3, 2019
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

Aspects of the subject disclosure may include, a system that facilitates determining from a training session with a waveguide system that one or more polarized modes of electromagnetic waves propagating along a transmission medium are experiencing differing propagation delays and adjusting a coupler to mitigate the differing propagation delays. Other embodiments are disclosed.

First claim

What is claimed is:

1. A device, comprising:
a transmitter;
a processing system including a processor, the processing system coupled to the transmitter; and
a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
initiating a calibration session with a waveguide system;
detecting from the calibration session a physical perturbation in a transmission medium that facilitates propagation of first electromagnetic waves;
adjusting the transmitter to mitigate dispersion of second electromagnetic waves generated by the transmitter; and
repeating the calibration session until one or more polarized modes of the first electromagnetic waves is parallel with a principal axis of the transmission medium.

2. The device of claim 1 , wherein the detecting comprises receiving a message from the waveguide system, the message including calibration information.

3. The device of claim 2 , wherein the adjusting comprises adjusting the transmitter according to the calibration information.

4. The device of claim 2 , wherein the first electromagnetic waves are generated by the device and directed to the waveguide system, and wherein the calibration information is generated by the waveguide system based on analysis of the first electromagnetic waves.

5. The device of claim 1 , wherein the first electromagnetic waves are generated by the waveguide system and directed to the device, wherein the detecting comprises analyzing the first electromagnetic waves to determine that the first electromagnetic waves generated by the waveguide system are experiencing dispersion.

6. The device of claim 1 , wherein the adjusting the transmitter causes an azimuthal rotation of one or more polarized modes of the second electromagnetic waves.

7. The device of claim 6 , wherein the adjusting the transmitter comprises adjusting a phase of the one or more polarized modes.

8. The device of claim 1 , wherein the adjusting of the transmitter is repeated until one or more polarized modes of the second electromagnetic waves is parallel with a principal axis.

9. The device of claim 1 , wherein the adjusting of the transmitter comprises adjusting an azimuthal position of the transmitter about an outer surface of the transmission medium.

10. The device of claim 1 , wherein the physical perturbation in the transmission medium causes the transmission medium to be birefringent.

11. The device of claim 1 , wherein the transmitter comprises a cross planar coupler.

12. A non-transitory, machine-readable medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:
determining from a training session with a waveguide system that one or more polarized modes of electromagnetic waves propagating along a transmission medium are experiencing differing propagation delays, wherein the determining comprises receiving a message from the waveguide system, the message including calibration information, wherein the electromagnetic waves are directed to the waveguide system, and wherein the calibration information is generated by the waveguide system based on analysis of the one or more polarized modes of the electromagnetic waves; and
adjusting a coupler to mitigate the differing propagation delays.

13. The non-transitory, machine-readable medium of claim 12 , wherein the adjusting comprises adjusting the coupler according to the calibration information.

14. The non-transitory, machine-readable medium of claim 12 , wherein the electromagnetic waves are generated by the waveguide system, wherein the determining comprises analyzing the one or more polarized modes of the electromagnetic waves to determine that the one or more polarized modes of electromagnetic waves are experiencing the differing propagation delays.

15. A method, comprising:
transmitting, by a first waveguide system comprising a processing system, electromagnetic waves having polarized modes propagating along a transmission medium, the electromagnetic waves directed to a second waveguide system coupled to the transmission medium, and the electromagnetic waves propagating along the transmission medium without relying on an electrical return path;
obtaining, by the first waveguide system, a message from the second waveguide system, the message including calibration information associated with an analysis of the polarized modes of the electromagnetic waves; and
adjusting according to the message a configuration of the first waveguide system to mitigate a differential delay between the polarized modes of the electromagnetic waves.

16. The method of claim 15 , wherein the adjusting comprises adjusting the first waveguide system according to the calibration information.

17. The method of claim 15 , wherein the adjusting comprises adjusting an azimuthal position of the first waveguide system about an outer surface of the transmission medium.

18. The device of claim 1 , wherein the initiating a calibration session is responsive to a request to initiate the calibration session.

19. The device of claim 18 , wherein the request to initiate the calibration session is received at onset of communications.

20. The non-transitory, machine-readable medium of claim 12 , wherein the operations further comprise initiating the training session responsive to a request to initiate the training session.

Assignees

• At & T Ip I Lp

Inventors

• Henry Paul Shala
• Barzegar Farhad
• Barnickel Donald J
• Vannucci Giovanni
• Gerszberg Irwin
• Bennett Robert
• Guntin Ed
• Wolniansky Peter
• Willis Iii Thomas M

Classifications

• H04B3/06 Primary

  by the transmitted signal · CPC title

• H04B3/52 Primary

  Systems for transmission between fixed stations via waveguides · CPC title