Multi-fiber optical connect

• US 7,165,893 B2
• Filed: 09/10/2004
• Issued: 01/23/2007
• Est. Priority Date: 09/10/2004
• Status: Active Grant

• Current Assignee: Hutchinson Technology Incorporated (TDK Corporation)
• Original Assignee: Hutchinson Technology Incorporated (TDK Corporation)
• Inventors: Schmitz, Roger W.
• Primary Examiner(s): Font; Frank G.
• Assistant Examiner(s): Wong; Eric
• Application Number:
  US10/939,071
• Publication Number:
  US 20060056770A1
• Time in Patent Office: 865 Days
• Field of Search: None
• US Class Current: 385/55
• CPC Class Codes: G02B 6/3817 containing optical and electrical conductors cables including electrical and optical conductors H01B11/22; G02B6/3816 takes precedence
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3879 Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
• CPC Class Codes: G02B 6/3891 Bayonet type
• CPC Class Codes: G02B 6/40 having fibre bundle mating means

Abstract

An optical connector comprises a first block having a channel for accommodating a first set of optical cables and a second block having a channel for accommodating a second set of optical cables. Each block has three protrusions, each adapted to be engaged to a respective one of the three protrusions from the other block in an end-to-end fashion and having a channel for accommodating one of the optical cables. The connector further comprises a spring biasing the two blocks to maintain the end-to-end engagement a longitudinal direction between the protrusions three spacers. The connector also includes limiter disk having three slots arranged in a Y-pattern, each slot width-wise closely fitting an opposing pair of the protrusions. The limiter disk thus constrains the relative shifting or rotation between the two blocks in any direction transverse to the longitudinal direction. The connector further includes a fastener attached to the two blocks for securing the two blocks together. A kinematic support is thus provided for stable optical connection across an optical connector.

Claims

1. An optical connector, comprising:

a first block having a channel for accommodating a first optical cable;

a second block having a channel for accommodating a second optical cable in optical communication with the first optical cable;

three spacers, each positioned between the first and second blocks and adapted to engage both blocks when the blocks are pressed against each other by a biasing force in a first direction, the three spacers being positioned and adapted to balance substantially the entire biasing force; and

a plurality of limiters arranged to constrain relative motion between any portion of the first block and any portion of the second block in all directions transverse to the first direction.

2. The optical connector of claim 1, wherein the plurality of limiters are configured and arranged to constrain relative shifting and rotation between any portion of the first block and any portion of the second block in all directions transverse to the first direction.

3. The optical connector of claim 1, wherein each of the three spacers comprises a protrusion extending from either one of the first and second blocks and adapted to be engaged to the other one of the first and second blocks when the blocks are pressed against each other by the biasing force in the first direction.

4. The optical connector of claim 3, wherein each of the plurality of limiters comprises a recess formed in a solid body and adapted to retain at least a portion of one of the protrusions.

5. The optical connector of claim 3, wherein at least one of three protrusions defines an opening to accommodate the optical cable through the opening.

6. The optical connector of claim 5, wherein each of three protrusions defines an opening to accommodate the optical cable through the opening.

7. The optical connector of claim 4, wherein the three protrusions extend from the first block.

8. The optical connector of claim 7, wherein the plurality of recesses comprise three elongated slots in the second block, the three slots arranged in a Y-pattern.

9. The optical connector of claim 7, further comprising three protrusions extending from the second block, the protrusions from the second block being pair-wise aligned substantially with the protrusions on the first block along the first direction.

10. The optical connector of claim 9, further comprising a disk having a thickness and positionable between the first and second blocks when the blocks are engaged to each other, the disk defining three openings through the thickness of the disk and arranged in a Y-pattern, each opening having a width sufficient to accommodate its respective pair of protrusions extending from the first and second blocks but does not permit either protrusion to move any substantial distance relative to the disk along the width of the opening.

11. The optical connector of claim 9, wherein each of at least two of the three protrusions on each block defines an opening to accommodate the optical cable through the opening.

12. The optical connector of claim 1, further comprising a resilient member adapted to provide the biasing force engaging the first block to the second block.

13. The optical connector of claim 12, further comprising a fastener having a first portion attached to the first block and a second portion attached to the second block, the two portions being adapted to be connected to each other to maintain the biasing force engaging the two blocks to each other.

14. The optical connector of claim 13, wherein the first portion comprises a first shell adapted to house the first block, and the second portion comprises a second shell adapted to house the second block.

15. The optical connector of claim 1, the connector further defining a space for receiving an electrical device having a conductive terminal, and further comprising an electrode adapted to be in electrical contact with the conductive terminal at least when the two blocks are engaged to each other.

16. The optical connector of claim 15, wherein the electrode is a spring-loaded pin adapted to flexibly engage the conductive terminal when the two blocks are engaged to each other.

17. The optical connector of claim 15, further comprising an electrical device comprising an integrated circuit chip positioned in the space for receiving an electrical device.

18. The optical connector of claim 17, wherein the integrated circuit chip comprises a counter.

19. An optical system, comprising:

a first optical cable;

a first block having a channel for accommodating the first optical cable;

a second optical cable;

a second block having a channel for accommodating the second optical cable such that the second optical cable is in optical communication with the first optical cable;

three spacers, each positioned between the first and second blocks and engaging both blocks when the blocks are pressed against each other by a biasing force in a first direction, the three spacers being positioned and adapted to balance substantially the entire biasing force; and

a plurality of limiters arranged to constrain relative motion between any portion of the first block and any portion of the second block in all directions transverse to the first direction.

20. The optical system of claim 19, wherein each of the three spacers comprises a protrusion extending from either one of the first and second blocks and adapted to be engaged to the other one of the first and second blocks when the blocks are pressed against each other by the biasing force in the first direction.

21. The optical system of claim 20, wherein at least one of the first optical cable and second optical cable passes through one of the protrusions, and the first and second optical cables are substantially aligned along the first direction.

22. A method for coupling optical cables, the method comprising:

securing a first optical cable to a first block;

securing a second optical cable to a second block;

biasing the first block against the second block in a first direction at three locations while engaging an end of the first optical cable to an end of the second optical cable in one of the three locations; and

constraining the relative movement between the first and second blocks in directions transverse to the first direction.

23. The method of claim 22, wherein the biasing step further comprises placing and electrical device in the first block and establishing an detachable electrical contact to the electrical device from the second block.

24. An optical connector, comprising:

a first block having three protrusions;

a second block having three protrusion;

means for securing a first optical cable through one of the protrusions on the first block;

means for securing a second optical cable through one of the protrusions on the second block in optical communication with the first optical cable;

a resilient member adapted to bias the first and second blocks toward each other;

a fastener having a first portion attached to the first block and a second portion attached to the second portion, the two portions being adapted to be connected to each other to maintain the two blocks biased toward each other; and

means for aligning the three protrusions on the first block respectively to the three protrusions on the second block.

25. An optical connector, comprising:

a first block having an opening for accommodating and securing a first optical cable; and

a second block having an opening for accommodating and securing a second optical cable in optical communication with the first optical cable,

the first block and second block being configured to be connected in an essentially kinematic engagement for establishing a stable contact between an end of the first optical cable and an end of the second optical cable.

26. The optical connector of claim 25, further comprising a resilient member adapted to bias the first and second blocks toward each other, thereby maintaining the essentially kinematic engagement.

27. The optical connector of claim 26, wherein the first and second blocks are configured to form a three-footed compressive engagement with each other in a longitudinal direction, the connector further comprising a plurality of limiters arranged to constrain relative motion between any portion of the first block and any portion of the second block in all directions transverse to the longitudinal direction.