Optical fiber ferrule

Details Optical fiber ferrule Optical fiber ferrule

1999-08-11

2001-02-13

Sanghavi, Hemang (Department: 2874)

Optical waveguides

With disengagable mechanical connector

Optical fiber/optical fiber cable termination structure

C385S072000, C385S077000, C385S078000, C385S087000

Reexamination Certificate

active

06186671

ABSTRACT:

TECHNICAL FIELD
The present invention relates to a ferrule for securing to the end of an optical fiber.
BACKGROUND OF THE INVENTION
In order to terminate the end of an optical fiber, especially a polymer optical fiber, it is known to place a ferrule on the end of the fiber. The ferrule assists in the correct positioning of the end of the fiber in a connecting system and/or in the correct positioning of the end of the fiber for subsequent end face treatment. Known ferrules require a special fixing element, such as a crimp ring or a stamped metal part, to secure the ferrule to the fiber.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improvement to the known arrangements.
A ferrule in accordance with the present invention for attachment to the end of an optical fiber comprises a tubular body having a front face and a rear face; a ring member positioned adjacent the front face and having an internal diameter which allows a close sliding fit on the body; and a breakable membrane connecting the ring member to the body; wherein the tubular body has an axially extending through bore having a front portion opening through the front face and being sized to receive an optical fiber in a close fit, and a rear portion opening through the rear face and being sized to receive a sheath or jacket of the optical fiber in a close fit; wherein the tubular body has two or more axially extending slots which open into the rear portion of the bore and open through the rear face, and which define resilient arms therebetween for gripping the sheath; and wherein the ferrule is moulded in one piece from plastics material.
A one piece arrangement which removes the need for a separate special fixing element.


REFERENCES:
patent: 3789485 (1974-02-01), Gudmestad
patent: 4815808 (1989-03-01), Honma et al.
patent: 5231685 (1993-07-01), Hanzawa et al.
patent: 26 16 876 (1977-10-01), None
patent: 0636380 A1 (1995-02-01), None
patent: 2154648 (1985-09-01), None
patent: 58181006 (1983-10-01), None

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