Optical polarity modules and systems

• US 7,147,383 B2
• Filed: 12/22/2004
• Issued: 12/12/2006
• Est. Priority Date: 12/22/2004
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Inventors: Sullivan, Keith D.
• Primary Examiner(s): Font, Frank G.
• Assistant Examiner(s): Hughes, James P.
• Application Number:
  US11/020,730
• Publication Number:
  US 20060133736A1
• Time in Patent Office: 720 Days
• Field of Search: 385/55, 385/58, 385/56, 385/59
• US Class Current: 385/59
• CPC Class Codes: G02B 6/3851 Ferrules having keying or coding means
• CPC Class Codes: G02B 6/3878 comprising a plurality of ferrules, branching and break-out means
• CPC Class Codes: G02B 6/4472 Manifolds

Abstract

A module and harness are described that allow for connectors in each to be mated with other connectors in a key up to key down orientation. The module and harness may also be a part of a larger optical assembly. The optical fibers in the module and harness connect a multi-fiber ferrule on one end with a plurality of connectors on the other end, at least some of adjacent optical fibers extending from the multi-fiber ferrule are not connected with adjacent connectors at the other end.

Claims

1. An optical interconnection module, comprising:

a) an enclosure comprising wall areas;

b) an optical interconnection section formed in one of the wall areas of said enclosure, said optical interconnection section having a first multi-fiber connector with a plurality of optical fibers extending therefrom, the multi-fiber connector having an orientation key and an end face configured to define a predetermined angle, the predetermined angle being positioned relative to the orientation key;

c) an optical connector station formed in another one of the wall areas of said enclosure, the optical connector station having a plurality of optical fiber connectors associated therewith;

d) the first multi-fiber connector and the plurality of optical fiber connectors being optically interconnected to each other, the optical fibers extending from the first multi-fiber connector disposed in said enclosure, at least two optical fibers connected to the first multi-fiber connector immediately adjacent one another are connected to optical fiber connectors in the optical connector station that are not immediately adjacent one another; and

e) the first multi-fiber connector operable for being connected to a second multi-fiber connector, the second multi-fiber connector having an orientation key and an end face configured to define the same predetermined angle and oriented to the orientation key as the first multi-fiber connector such that when the first and second multi-fiber connectors are connected, the orientation keys are on opposite sides of the connected multi-fiber connectors.

2. The optical interconnection module according to claim 1, wherein the predetermined angle is about zero degrees (0°

).

3. The optical interconnection module according to claim 1, wherein the predetermined angle is about eight degrees (8°

).

4. The optical interconnection module according to claim 1, wherein the optical fiber connectors are single fiber connectors.

5. The optical interconnection module according to claim 1, wherein the end face configured to define a predetermined angle comprises a polished surface area.

6. An optical interconnection module, comprising:

a) an enclosure defining wall areas;

b) an optical interconnection section formed in one of the wall areas of said enclosure, said optical interconnection section having a first multi-fiber connector with a plurality of optical fibers extending therefrom, the multi-fiber connector having an orientation key and an end face configured to define a predetermined angle other than about zero degrees (0°

), the predetermined angle being positioned relative to the orientation key;

c) an optical connector station formed in another wall area of said enclosure, the optical connector station having a plurality of optical fiber connectors; and

d) the first multi-fiber connector and the plurality of optical fiber connectors being optically interconnected to each other by the optical fibers extending from the first multi-fiber connector disposed in said enclosure, at least two optical fibers connected to the multi-fiber connector immediately adjacent one another are connected to optical fiber connectors in the optical connector station that are not immediately adjacent one another, and

wherein a connection of the multi-fiber connector to another multi-fiber connector has an optical reflective performance of about ≦

−

65 dB.

7. The optical interconnection module according to claim 6, wherein the multi-fiber connectors are connected in a key up to key down orientation.

8. The optical interconnection module according to claim 6, wherein the multi-fiber connectors each have an end face polished to an angle of about eight degrees (8°

), the polished end face being positioned relative to the orientation key.

9. An optical interconnection harness comprising;

a first end having a multi-fiber connector, the multi-fiber connector having an orientation key and an end face configured to define a predetermined angle other than about zero degrees (0°

), the predetermined angle of the end face being positioned relative to the orientation key on the multi-fiber connector;

a second end having a plurality of optical fiber connectors positioned relative to one another; and

a plurality of optical fibers connecting the multi-fiber connector and the plurality of optical fiber connectors such that at least two optical fibers connected to the multi-fiber connector immediately adjacent one another are connected to optical fiber connectors in the second end that are not immediately adjacent one another.

10. The optical interconnection harness according to claim 9, wherein the end face configured to define a predetermined angle comprises a polished surface area.

11. The optical interconnection harness according to claim 9, wherein a connection of the multi-fiber connector to another multi-fiber connector has a reflective performance of about ≦

−

65 dB.

12. The optical interconnection harness according to claim 9, wherein the optical fiber connectors are single fiber connectors.