Fiber optic gasket and enclosure

• US 7,139,462 B1
• Filed: 10/11/2005
• Issued: 11/21/2006
• Est. Priority Date: 10/11/2005
• Status: Active Grant

• Current Assignee: Tellabs Operations Incorporated (Infinera Corp.)
• Original Assignee: Tellabs Operations Incorporated (Infinera Corp.)
• Inventors: Richtman, Mark P.
• Primary Examiner(s): FREAY, CHARLES GRANT
• Application Number:
  US11/247,407
• Time in Patent Office: 406 Days
• Field of Search: 385/134, 385/135, 385/136, 385/137, 385/138, 385/139, 439/577
• US Class Current: 385/137
• CPC Class Codes: G02B 6/4452 Distribution frames
• 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 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps
• CPC Class Codes: G02B 6/44785 Cable clamps

Abstract

A fiber optic gasket includes one or more apertures to individually retain optical fibers from one or more fiber optic cards positioned within an enclosure. A slit within the fiber optic gasket associated with each aperture facilitates placement of an optical fiber within an aperture. The fiber optic gasket includes a layer of conductive material for electromagnetic interference protection. When installed in the enclosure, the fiber optic gasket comes in contact with a door that is removably connected to the enclosure. An electro-magnetic interference shield is provided at the interface between the door and the fiber optic gasket. Optical fibers can extend out of the enclosure without causing harmful electromagnetic energy from leaving or entering the enclosure.

Claims

1. A fiber optic gasket, comprising:

a structural material;

a conductive material surrounding the structural material;

wherein the structural material and the conductive material have one or more apertures therethrough to facilitate retention of one or more optical fibers;

wherein the one or more apertures extend through the structural material and the conductive material in a first direction but not in a second direction orthogonal to the first direction beyond a peripheral edge of the fiber optic gasket.

2. The fiber optic gasket of claim 1, wherein the structural material is made of flexible foam.

3. The fiber optic gasket of claim 1, wherein the one or more apertures include a slit.

4. An enclosure for a fiber optic system, comprising:

a chassis;

a fiber optic gasket operable to retain an optical fiber from a fiber optic card;

a door operable to enclose the fiber optic card within the chassis, the door operable to contact the fiber optic gasket while secured to the chassis, the door and the fiber optic gasket providing an electromagnetic interference shield to prevent electromagnetic energy from entering or leaving the chassis;

a retaining bracket operable to hold the optical fiber extending outside the chassis in place.

5. The enclosure of claim 4, further comprising:

a fiber optic connector securing the optical fiber to the fiber optic card, the fiber optic connector being totally within the chassis when the door is secured thereto.

6. The enclosure of claim 4, wherein the fiber optic gasket is adhesively secured to the chassis.

7. The enclosure of claim 4, wherein the fiber optic gasket is operable to individually retain a plurality of optical fibers from a plurality of fiber optic cards in the chassis.

8. The enclosure of claim 4 wherein the fiber optic gasket includes:

a structural material;

a conductive material surrounding the structural material;

wherein the structural material and the conductive material have one or more apertures therethrough to facilitate retention of one or more optical fibers.

9. The enclosure of claim 8, wherein the apertures extend through the structural material and the conductive material in a first direction but not in a second direction orthogonal to the first direction beyond a peripheral edge of the fiber optic gasket.

10. The enclosure of claim 8, wherein the structural material is made of flexible foam.

11. The fiber optic gasket of claim 8, wherein the one or more apertures include a slit.

12. A system for providing fiber optic communications, comprising:

retention means for retaining an optical fiber that is removably connected to a fiber optic card;

enclosure means for enclosing the fiber optic card and allowing the optical fiber to extend beyond the enclosure means, the enclosure means and the retention means providing an electro-magnetic interference shield to prevent electro-magnetic energy from entering or leaving the enclosure means at the retention means;

a retaining bracket operable to hold the optical fiber extending outside the chassis in place.

13. The system of claim 12, further comprising:

means for securing the retention means to the enclosure means.

14. The system of claim 12, further comprising:

securing means for securing the optical fiber to the fiber optic card, the securing means being enclosed within the enclosure means.

15. The system of claim 12, wherein the retention means is operable to individually retain a plurality of optical fibers from a plurality of fiber optic cards within the enclosure means.