Resonator systems and methods for tuning resonator systems

• US 8,519,803 B2
• Filed: 10/29/2010
• Issued: 08/27/2013
• Est. Priority Date: 10/29/2010
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: McLaren, Moray, Beausoleil, Raymond G., Fiorentino, Marco, Binkert, Nathan Lorenzo, Jouppi, Norman Paul, Davis, Alan Lynn
• Primary Examiner(s): Summons, Barbara
• Application Number:
  US12/915,598
• Publication Number:
  US 20120105177A1
• Time in Patent Office: 1,033 Days
• Field of Search: 333/17.1, 333/219, 333/219.1, 385/14, 385/15, 385/30, 385 39- 42, 385/50, 385/51, 398/68, 398/69, 398/79, 398/82, 398/85, 398/141, 398/200, 398/214, 359/332
• US Class Current: 333/17.1
• CPC Class Codes: G02F 1/0147 based on thermo-optic effects G02F1/132 takes precedence
• CPC Class Codes: G02F 2203/15 involving resonance effects, e.g. resonantly enhanced interaction
• CPC Class Codes: H01P 1/2084 with dielectric resonators
• CPC Class Codes: H01P 7/088 Tunable resonators

Abstract

Tunable resonator systems and methods for tuning resonator systems are disclosed. In one aspect, a resonator system includes an array of resonators disposed adjacent to a waveguide, at least one temperature sensor located adjacent to the array of resonators, and a resonator control electronically connected to the at least one temperature sensor. Each resonator has a resonance frequency in a resonator frequency comb and channels with frequencies in a channel frequency comb are transmitted in the waveguide. Resonance frequencies in the resonator frequency comb are to be adjusted in response to ambient temperature changes detected by the at least one temperature sensors to align the resonance frequency comb with the channel frequency comb.

Claims

1. A resonator system comprising:

an array of resonators disposed adjacent to a waveguide, wherein each resonator has a resonance frequency in a resonator frequency comb, and wherein channels with frequencies in a channel frequency comb are transmitted in the waveguide;

at least one temperature sensor located adjacent to the array of resonators;

a resonator control electronically connected to the at least one temperature sensor, wherein resonance frequencies in the resonator frequency comb are to be adjusted by the resonator control in response to ambient temperature changes detected by the at least one temperature sensor to align the resonance frequency comb with the channel frequency comb; and

a barrel shifter connected to each resonator in the array of resonators, wherein the barrel shifter maintains an electronic signal-to-resonance frequency correspondence as directed by the resonator control in response to an ambient temperature change detected by the at least one temperature sensor.

2. The system of claim 1, wherein each resonator has a resonance frequency in the resonator frequency comb further comprises the resonators having approximately the same frequency spacing as the channels in the channel frequency comb.

3. The system of claim 1 further comprising at least one heating element disposed adjacent to the array of resonators and electronically connected to the resonator control, wherein the resonator control heats the at least one heating element in response to a change in the ambient temperature in order to align the resonance frequency comb with the channel frequency comb.

4. The system of claim 3, wherein the at least one heating element further comprises a single resistive region surrounding a portion of each resonator.

5. The system of claim 3, wherein each heating element of the at least one heating element further comprises a resistive region surrounding a portion of the array of resonators.

6. The system of claim 1, wherein resonance frequencies in the resonator frequency comb are to be adjusted in response to ambient temperature changes further comprises the resonator control injects current into the resonators to align the resonance frequency comb with the channel frequency comb.

7. The system of claim 1, wherein the array of resonators comprises resonators to operate in a plurality of modes, a resonator having a smallest perimeter among the resonators to operate in a highest frequency mode to be resonant with a channel having a highest frequency in the channel frequency comb.

8. The system of claim 1, wherein the array of resonators comprises resonators to operate in a plurality of modes, a resonator having a largest perimeter among the resonators to operate in a lowest frequency mode to be resonant with a channel having a lowest frequency in the channel frequency comb.

9. The system of claim 1, wherein align the resonance frequency comb with the channel frequency comb further comprises a circular shift in a resonator-to-resonance frequency correspondence.

10. A method for tuning an array of resonators comprising:

monitoring the temperature of the array of resonators with at least one temperature sensor, the array of resonators disposed adjacent to a waveguide, wherein each resonator has a resonance frequency in a resonator frequency comb, and wherein channels in a channel frequency comb are transmitted in the waveguide, the array of resonators having a tuning temperature range;

tuning the array of resonators to maintain a resonator frequency comb alignment with the channel frequency comb when the temperature is within the tuning temperature range, and tuning the array of resonators to establish a different resonator frequency comb alignment with the channel frequency comb when the temperature is not within the tuning temperature range; and

shifting electronic signal-to-resonator correspondence to maintain an electronic signal-to-resonance frequency correspondence.

11. The method of claim 10 further comprising pausing operation of the array of resonators when the temperature is not within the tuning temperature range.

12. The method of claim 11 further comprising resuming operation of the array of resonators when tuning the array of resonators and shifting the electronic signal-to-resonator correspondence is complete.

13. The method of claim 10, wherein tuning the array of resonators to maintain the resonator frequency comb alignment with the channel frequency comb further comprises injecting current to electronically tune the array of resonators.

14. The method of claim 10, wherein tuning the array of resonators to maintain the resonator frequency comb alignment with the channel frequency comb further comprises applying heat using at least one heating element to thermally tune the array of resonators.

15. The method of claim 10, wherein tuning the array of resonators to establish the different resonator frequency comb alignment with the channel frequency comb when the temperature is not within the tuning temperature range further comprises injecting current to the resonators to change a resonator-to-resonance frequency correspondence with the channel frequency comb.

16. The method of claim 10, wherein tuning the array of resonators to establish the different resonator frequency comb alignment with the channel frequency comb when the temperature is not within the tuning temperature range further comprises applying heat to the resonators using at least one heating element to change a resonator-to-resonance frequency correspondence with the channel frequency comb.

17. The method of claim 10, wherein tuning the array of resonators to establish a different resonator frequency comb alignment with the channel frequency comb further comprises shifting a first resonator-to-resonance frequency correspondence with resonance frequencies in the resonator frequency comb to a second resonator-to-resonance frequency correspondence with resonance frequencies in the resonator frequency comb.

18. The method of claim 10, wherein tuning the array of resonators to establish a different resonator frequency comb alignment with the channel frequency comb further comprises shifting a first resonator-to-resonance frequency correspondence to a second resonator-to-resonance frequency correspondence wherein the resonance frequency of each resonator shifts to a resonance frequency mode of an adjacent resonator.

19. The method of claim 10, wherein tuning the array of resonators to establish a different resonator frequency comb alignment with the channel frequency comb further comprises circularly shifting a first resonator-to-resonance frequency correspondence to a second resonator-to-resonance frequency correspondence.