Fiber optic furcation module

• US 8,699,838 B2
• Filed: 11/09/2011
• Issued: 04/15/2014
• Est. Priority Date: 05/14/2009
• Status: Active Grant

• Current Assignee: CCS Technology Inc. (Corning Incorporated)
• Original Assignee: CCS Technology Inc. (Corning Incorporated)
• Inventors: Andrzejewski, Tomasz, Tosik, Grzegorz
• Primary Examiner(s): PAK, SUNG H
• Application Number:
  US13/292,130
• Publication Number:
  US 20120057836A1
• Time in Patent Office: 888 Days
• Field of Search: None
• US Class Current: 385/49
• CPC Class Codes: G02B 6/12004 Combinations of two or more optical elements
• CPC Class Codes: G02B 6/1228 Tapered waveguides, e.g. integrated spot-size transformers for coupling with fibres G02B6/305

Abstract

The invention relates to a fiber optic furcation module, comprising: at least one planar wave guide card; a first adapter assigned to the or each planar wave guide card, the or each first adapter comprising a plurality of adapter ports for optical fibers terminated in an optical fiber ribbon connector; a plurality of second adapters assigned to the or each planar wave guide card, each of said second adapters comprising one adapter port or two adapter ports, the one or two adapter ports being operative to receive respective single optical fiber connectors terminated with single optical fibers; a plurality of fiber optic transmission channels provided by the or each planar wave guide card, the fiber optic transmission channels providing optical traces being operative to transmit and/or receive optical wavelength signals and connecting each adapter port of a first adapter with an adapter port of one of said second adapters.

Claims

1. A fiber optic furcation module, comprising

at least one planar wave guide card;

a first adapter assigned to the at least one planar wave guide card, the first adapter comprising a plurality of adapter ports for optical fibers terminated in an optical fiber ribbon connector;

a plurality of second adapters assigned to the at least one planar wave guide card, each of said second adapters comprising one adapter port or two adapter ports, the one or two adapter ports being operative to receive respective single optical fiber connectors terminated with single optical fibers;

a plurality of fiber optic transmission channels provided by the at least one planar wave guide card, the fiber optic transmission channels providing optical traces being operative to transmit and/or receive optical wavelength signals and connecting each adapter port of said first adapter with at least one of said one adapter port or said two adapter ports of one of said second adapters.

2. The fiber optic furcation module as claimed in claim 1, wherein the first adapter assigned to the at least one planar wave guide card is an MPO adapter.

3. The fiber optic furcation module as claimed in claim 1, wherein said second adapters assigned to the at least one planar wave guide card are simplex adapters each having one adapter port for one optical fiber terminated in a single fiber connector.

4. The fiber optic furcation module as claimed in claim 1, wherein said plurality of second adapters assigned to the at least one planar wave guide card are duplex adapters each having two adapter ports for two optical fibers each terminated in a single fiber connector.

5. The fiber optic furcation module as claimed in claim 4, wherein each adapter port provides a fiber optic interface between a fiber optic transmission channel of a respective one of the at least one planar wave guide card and an optical fiber terminated in a fiber optic connector and being connectable to said adapter port by the respective fiber optic connector.

6. The fiber optic furcation module as claimed in claim 5, wherein each adapter port comprises a mode conditioning element and a waveguide funnel.

7. The fiber optic furcation module as claimed in claim 6, wherein said mode conditioning element of each adapter port reduces a mode field diameter from around 10 μ

m to around 4 μ

m to be transmitted within the fiber optic transmission channel of the planar wave guide card.

8. The fiber optic furcation module as claimed in claim 6, wherein said mode conditioning element of each adapter port increases a mode field diameter from around 4 μ

m to around 10 μ

m to be transmitted within a fiber core of the optical fiber terminated in a fiber optic connector being connectable to said adapter port.

9. The fiber optic furcation module as claimed in claim 6, wherein the mode conditioning element of each adapter port is positioned between a fiber optic transmission channel of the respective one of the at least one planar wave guide card running to the adapter port and the waveguide funnel of said adapter port.

10. The fiber optic furcation module as claimed in claim 9, wherein the width of each fiber optic transmission channel of the respective one of the at least one planar wave guide card running to an adapter port is smaller than the width of a fiber core of the optical fiber terminated in a fiber optic connector being connectable to said adapter port.

11. The fiber optic furcation module as claimed in claim 10, wherein the waveguide funnel of each adapter port provides a smooth transition between the fiber optic transmission channel of a respective one of the at least one planar wave guide card running to an adapter port and the fiber core of the optical fiber terminated in a fiber optic connector being connectable to said adapter port.

12. The fiber optic furcation module as claimed in claim 11, wherein each optic transmission channel provided by the at least one planar wave guide card comprises a width of approximately 3 μ

m, wherein each fiber core of each optical fiber terminated in a fiber optic connector comprises a width of approximately 8 μ

m, and wherein the waveguide funnel comprising a length of approximately 10 μ

m provides a smooth transition between the fiber optic transmission channel and the fiber core.

13. The fiber optic furcation module as claimed in claim 1, wherein said first adapter and said plurality of second adapters are assigned to opposite sides of the at least one planar wave guide card.

14. The fiber optic furcation module as claimed in claim 1, wherein said first adapter and said plurality of second adapters are assigned to the same side of the at least one planar wave guide card.

15. The fiber optic furcation module as claimed in claim 1, comprising two mechanically cascaded planar wave guide cards, each comprising a first adapter, a plurality of second adapters and fiber optic transmission channels, whereby a first planar wave guide card is mounted to a supporting frame and whereby a second planar wave guide card is mounted to the first planar wave guide card.

16. The fiber optic furcation module as claimed in claim 1, wherein the first adapter assigned to each planar wave guide card is an MTP adapter.

17. A fiber optic furcation module, comprising

at least one planar wave guide card;

a first adapter assigned to the at least one planar wave guide card, the first adapter comprising a plurality of adapter ports for optical fibers terminated in an optical fiber ribbon connector;

a plurality of second adapters assigned to the at least one planar wave guide card, each of said second adapters comprising one adapter port or two adapter ports, the one or two adapter ports being operative to receive respective single optical fiber connectors terminated with single optical fibers;

a plurality of fiber optic transmission channels provided by the at least one planar wave guide card, the fiber optic transmission channels providing optical traces being operative to transmit and/or receive optical wavelength signals and connecting each adapter port of said first adapter with at least one of said one adapter port or said two adapter ports of one of said second adapters;

wherein each adapter port provides a fiber optic interface between a fiber optic transmission channel of a respective one of the at least one planar wave guide card and an optical fiber terminated in a fiber optic connector and being connectable to said adapter port by the respective fiber optic connector; and

wherein each adapter port comprises a mode conditioning element and a waveguide funnel.

18. The fiber optic furcation module as claimed in claim 17, wherein the mode conditioning element comprises waveguide stripes.

19. The fiber optic furcation module as claimed in claim 18, wherein the waveguide stripes are deposited perpendicular to the fiber optic transmission channel.

20. The fiber optic furcation module as claimed in claim 18, wherein the waveguide stripes are specially sized and separated to produce one of a wave broadening antenna and a wave thinning antenna.