Silicon photonics based optical network

• US 10,644,808 B2
• Filed: 08/23/2018
• Issued: 05/05/2020
• Est. Priority Date: 08/23/2017
• Status: Active Grant

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Gomez, Kevin A.
• Primary Examiner(s): Lee, Jai M
• Application Number:
  US16/111,063
• Publication Number:
  US 20190068293A1
• Time in Patent Office: 621 Days
• Field of Search: None
• CPC Class Codes: H04B 10/67 Optical arrangements in the receiver
• CPC Class Codes: H04B 10/70 Photonic quantum communication
• CPC Class Codes: H04J 14/0267 Optical signaling or routing
• CPC Class Codes: H04Q 11/0003 Details
• CPC Class Codes: H04Q 11/0066 Provisions for optical burst or packet networks

Abstract

Various implementations of network devices disclosed herein provide a method routing a data packet in an optical domain, the data packet including a first component or header and second component or routing information, stripping the first component or header from the data packet using a silicon photonic component, processing the first component or header in an electrical domain, and communicating the data packet without the first component or header to an optical delay line.

Claims

1. An apparatus comprising:

an incoming waveguide configured to communicate optical signals over a plurality of wavelengths; and

a combination of a first silicon photonics (SiPh) component and a second SiPh component configured to alter a path of optical signals traveling on the incoming waveguide towards an outgoing waveguide, the first SiPh component configured to resonate at a resonant wavelength to direct a first component of an incoming optical signal towards the outgoing waveguide, wherein a second wavelength (λ

s_1b) of the second SiPh component is adjusted down at a first value of the second wavelength (λ

s_1b) and is adjusted back up at a second value of the second wavelength (λ

s_1b) with the first value being lower than the resonant wavelength (λ

s_1a) of the first SiPh component.

2. The apparatus of claim 1, wherein a resonant wavelength of the second SiPh component is adjusted down using charge carrier modulation of the second SiPh component at the first value of the resonant wavelength of the second SiPh component and is adjusted back up at the second value of the resonant wavelength of the second SiPh component, with the first value being lower than the resonant wavelength of the first SiPh component and the second value being higher than the resonant wavelength of the first SiPh component.

3. The apparatus of claim 1, wherein the resonant wavelength of the second SiPh component is adjusted down, as it transitions from a first value to a second value, in response to change in a heater power applied to the second SiPh component.

4. The apparatus of claim 1, wherein the resonant wavelength of the second SiPh component is adjusted down using charge carrier modulation of the second SiPh component by approximately 0.05 nm.

5. The apparatus of claim 1, wherein heater components are used to change the resonant frequencies of the first and second silicon photonics components.

6. The apparatus of claim 1, wherein at least one of the SiPh components is a ring resonator and the incoming waveguide, outgoing waveguide, first SiPh component and second SiPh components are connected to storage devices via a network.

7. The apparatus of claim 1, wherein at least one of the SiPh components is a micro ring resonator.

11. The apparatus of claim 1, wherein the first silicon photonics (SiPh) component is used to stripe a first data component from a data packet.

12. The apparatus of claim 11, further comprising one or more electrical domain components configured to process the first data component in an electrical domain.

13. The apparatus of claim 11, further comprising one or more router switches configured to be set using a data packet output from processing the first data component in the electrical domain.

14. The apparatus of claim 13, further comprising one or more optical delay lines configured to generate data packets to be input to the one or more router switches.

15. The apparatus of claim 14, wherein the optical delay line is approximately 25 meters in length.

8. A communication network comprising:

a plurality of waveguides, each of the waveguides configured to communicate optical signals over a plurality of wavelengths;

a combination of at least two silicon photonics (SiPh) components configured to alter a path of optical signals traveling on an incoming waveguide towards an outgoing waveguide, a first SiPh component configured to resonate at a first wavelength (λ

s_1a) to direct a first component of an incoming optical signal towards the outgoing waveguide and a second SiPh component configured to resonate at a second wavelength (λ

s_1b) to direct a second component of the incoming optical signal towards the outgoing waveguide, wherein the second wavelength (λ

s_1b) is adjusted down at a first value of the second wavelength (λ

s_1b) and is adjusted back up at a second value of the second wavelength (λ

s_1b) with the first value being lower than the resonant wavelength (λ

s_1a) of the first SiPh component and the second value being higher than the resonant wavelength (λ

s_1a) of the first SiPh component.

9. The communication network of claim 8, wherein the first component comprises a header and the second component comprise routing information.

10. The communication network of claim 8, further comprising a third SiPh component configured to resonate at a third wavelength (λ

s_1c) to direct a third component of the incoming signal toward the outgoing waveguide.