Single-use fiber optic cable

• US 7,128,471 B2
• Filed: 05/06/2004
• Issued: 10/31/2006
• Est. Priority Date: 05/06/2004
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies Fiber IP Singapore PTE Limited (Broadcom, Inc.)
• Inventors: Wilson, Robert E.
• Primary Examiner(s): Pak, Sung
• Assistant Examiner(s): WONG, TINA MEI SENG
• Application Number:
  US10/841,579
• Publication Number:
  US 20050249466A1
• Time in Patent Office: 908 Days
• Field of Search: 385 78- 94
• US Class Current: 385/78
• CPC Class Codes: G02B 6/3806 Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres dismountable connectors G02B6/3807
• CPC Class Codes: G02B 6/4228 Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements G02B6/4234 takes precedence
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures

Abstract

A fiber optic cable assembly includes a cable and a connector body receiving the cable. The connector body has a ferrule receiving an unpolished fiber from the cable, wherein the fiber protrudes from a tip of the ferrule.

Claims

1. A fiber optic cable assembly to be inserted into a fiber optic module, comprising:

a cable;

a connector body receiving the cable, the connector body comprising a ferrule receiving a fiber from the cable, the fiber being permanently fixed to the ferrule, wherein a tip of the fiber protrudes unpolished from a tip of the ferrule; and

a cable keeper to be inserted through a latch opening of the fiber optic module and into a cable keeper receptacle of the connector body to permanently connect the connector body and the fiber optic module.

2. The cable assembly of claim 1, wherein the connector body further comprises

a lower housing comprising opposing tabs for receiving the ferrule;

an upper housing defining the cable keeper receptacle, wherein the upper housing is mounted atop the lower housing.

3. The cable assembly of claim 2, wherein the cable keeper comprises a spring finger that, when inserted into the cable keeper receptacle, spring-loads the ferrule forward.

4. The cable assembly of claim 2, further comprising a strain relief boot around the cable and received within the connector body.

5. The cable assembly of claim 2, wherein the lower housing further comprises a cantilever latch, a first alignment hole, and a first alignment pin, and the upper housing further comprises a shoulder for engaging the cantilever latch, a second alignment pin for engaging the first alignment hole, and a second alignment hole for receiving the first alignment pin.

6. The cable assembly of claim 3, wherein the cable keeper receptacle further comprises a shoulder and the cable keeper further comprises another spring finger that, when inserted into the cable keeper receptacle, locks onto the shoulder.

7. The cable assembly of claim 1, wherein the cable keeper comprises a spring finger that, when inserted into the cable keeper receptacle, spring-loads the ferrule forward.

8. The cable assembly of claim 1, wherein the cable keeper receptacle comprises a shoulder and the cable keeper comprises a spring finger that when inserted into the cable keeper receptacle, locks onto the shoulder.

9. A method for forming a cable assembly to be inserted into a fiber optic module, comprising:

stripping a cable to expose fiber;

inserting the fiber into a ferrule so a portion of the fiber protrudes from a tip of the ferrule;

bonding the fiber the ferrule;

scribing and breaking the protruding portion of the fiber to form a tip of the fiber;

mounting the ferrule in a lower housing;

mounting an upper housing atop the lower housing to form a connector body; and

inserting the cable assembly into the fiber optic module without polishing the tip of the fiber, wherein said inserting the cable assembly into the fiber optic module comprises;

inserting the connector body into a nose of the fiber optic module; and

inserting a cable keeper through a latch opening of the fiber optic module and into a cable keeper receptacle of the connector body to permanently connect the connector body and the fiber optic module.

10. The method of claim 9, wherein said mounting the ferrule in a lower housing comprises seating the ferrule into opposing tabs in the lower housing.

11. The method of claim 9, further comprising sliding a strain relief boot over the cable, mounting the strain relief boot along with the ferrule in the lower housing, and mounting the upper housing atop the lower housing to engage the strain relief boot.

12. The method of claim 9, wherein said mounting an upper housing atop the lower housing comprises:

engaging a cantilever latch on the lower housing to a shoulder on the upper housing;

inserting a first alignment pin of the lower housing into a first alignment hale of the upper housing; and

inserting a second alignment pin of the upper housing into a second alignment hole of the lower housing.

13. The method of claim 9, wherein a spring finger of the cable keeper spring-loads the ferrule forward.

14. The method of claim 9, wherein a spring finger of the cable keeper locks onto a shoulder of the cable keeper receptacle.