Dense wavelength division multiplexing fiber optic apparatuses and related equipment

• US 10,715,271 B1
• Filed: 12/02/2019
• Issued: 07/14/2020
• Est. Priority Date: 09/30/2019
• Status: Active Grant

• Current Assignee: Corning Research & Development Corporation (Corning Incorporated)
• Original Assignee: Corning Research & Development Corporation (Corning Incorporated)
• Inventors: Cox, Terry Dean, Gui, Dong, Hu, Lingling, Ramsdell, Scott William, Rodriguez, Diana
• Primary Examiner(s): Lambert, David W
• Application Number:
  US16/700,103
• Time in Patent Office: 225 Days
• Field of Search: None
• CPC Class Codes: G02B 6/29301 based on a phased array of light guides integrated arrayed waveguide gratings G02B6/12009
• CPC Class Codes: G02B 6/29364 Cascading by a light guide path between filters or filtering operations, e.g. fibre interconnected single filter modules
• CPC Class Codes: G02B 6/29385 Channel monitoring, e.g. by tapping channel monitoring in optical transmission systems H04B10/07
• CPC Class Codes: G02B 6/44526 Panels or rackmounts covering a whole width of the frame or rack
• CPC Class Codes: G02B 6/44528 Patch-cords; Connector arrangements in the system or in the box routing arrangements H04Q1/00
• CPC Class Codes: G02B 6/4454 with splices
• CPC Class Codes: H04J 14/02 Wavelength-division multiplex systems
• CPC Class Codes: H04J 14/0213 Groups of channels or wave bands arrangements
• CPC Class Codes: H04J 14/0267 Optical signaling or routing

Abstract

A fiber optic system is provided including a first and second fiber optic assembly, each comprising a body defining a fiber routing volume and a plurality of fiber optic components disposed on the body. The first fiber optic assembly includes a first plurality of optical filters disposed within the first fiber routing volume. The first plurality of optical filters define a first plurality of dense wavelength division multiplexing (DWDM) channels, test channels, an express port, and an upgrade port. A second plurality of optical filters disposed within the second fiber routing volume. The second plurality of optical filters define a second group comprising a second plurality of DWDM channels. The test channels and the express port of the first fiber optic assembly are utilized for both the first fiber optic assembly and the second fiber optic assembly.

Claims

1. A fiber optic system comprising:

a first fiber optic assembly comprising;

a first body;

a plurality of fiber optic components disposed on the first body; and

a first plurality of optical filters disposed on the first body, wherein at least some of the first plurality of optical filters are optically connected to at least some of the first plurality of fiber optic components to define a first plurality of dense wavelength division multiplexing (DWDM) channels, test channels, an express port, and an upgrade port; and

a second fiber optic assembly comprising;

a second body;

a second plurality of fiber optic components disposed on the second body; and

a second plurality of optical filters disposed on the second body, wherein at least some of the second plurality of optical filters are optically connected to at least some of the second plurality of fiber optic components to define a second plurality of DWDM channels,

wherein the test channels and the express port of the first fiber optic assembly are utilized for both the first fiber optic assembly and the second fiber optic assembly.

2. The fiber optic system of claim 1, wherein the first plurality of DWDM channels comprises at least twenty-four (24) DWDM channels.

3. The fiber optic system of claim 1, wherein the second plurality of DWDM channels comprises at least twelve (12) DWDM channels.

4. The fiber optic system of claim 1, wherein the second plurality of DWDM channels comprises at least twenty-four (24) DWDM channels.

5. The fiber optic system of claim 1, wherein an input fiber connection of the second fiber optic assembly is optically connected to the upgrade port of the first fiber optic assembly.

6. The fiber optic system of claim 1, wherein the first plurality of optical filters comprises a first eight-skip-zero (8s0) filter coupled to a first group of eight (8) DWDM channel filters, a second 8s0 filter coupled to a second group of eight (8) DWDM channel filters, and a third group of eight (8) DWDM channel filters.

7. The fiber optic system of claim 6, wherein an input to the upgrade port is optically connected to a DWDM channel filter of the third group of eight (8) DWDM channel filters.

8. The fiber optic system of claim 6, wherein the first fiber optic assembly further comprises a third 8s0 filter coupled to the third group of eight (8) DWDM channel filters, and

wherein the upgrade port is optically connected to an output of the third 8s0 filter.

9. The fiber optic system of claim 8, wherein the second plurality of optical filters comprises a fourth 8s0 filter coupled to a fourth group of eight (8) DWDM channel filters, a fifth 8s0 filter coupled to a fifth group of eight (8) DWDM channel filters, and a sixth group of eight (8) DWDM channel filters.

10. The fiber optic system of claim 1, wherein the first fiber optic assembly comprises a loopback feature, wherein the loopback feature comprises a first input fiber optic component directly optically connected to an output fiber optic component and a second input fiber optic component coupled to the first plurality of optical filters.

11. The fiber optic system of claim 10 further comprising:

a loopback connector configured to connect the output fiber optic component to the second input fiber optic component.

12. The fiber optic system of claim 10, wherein the output fiber optic component and the second input fiber optic component are disposed in a duplex fiber optic adapter.

13. The fiber optic system of claim 10 further comprising:

a first fiber optic jumper connecting the output fiber optic component of the first fiber optic assembly to an input fiber optic component of the second fiber optic assembly; and

a second jumper connecting an output port of the second fiber optic assembly to the second input fiber optic component of the first fiber optic assembly.

14. The fiber optic system of claim 1, wherein the first plurality of fiber optic components or second plurality of fiber optic components comprises at least one dual-ferrule very small form factor (VSFF) component.

15. The fiber optic system of claim 1 further comprising:

a chassis configured to support a plurality of fiber optic assemblies;

wherein the chassis is configured to support a fiber optic connection density of at least two hundred eighty-eight (288) DWDM channels per U space, based on using at least one multi-fiber fiber optic component.

16. The fiber optic system of claim 15, wherein a U space comprises a height of 1.75 inches and comprises a width of 19 inches or 23 inches.

17. The fiber optic system of claim 1, wherein the first body comprises a width of about 90 mm, a height of about 12 mm, and a depth of about 216 mm.

18. The fiber optic system of claim 1, wherein the first plurality of optical filters includes a plurality of thin film filters.

19. The fiber optic system of claim 1, wherein the second plurality of optical filters includes a plurality of thin film filters.