Fiber optic connector having keyed ferrule holder

Abstract

A fiber optic connector including one or more ferrule assemblies having a ferrule and a keyed ferrule holder defining a first key slot and a second key slot, and a connector housing defining a key that is received within the first or the second key slot. The first key slot configures the connector in a first keyed position for simultaneous, coplanar end face polishing of the ferrules, and the second keyed position configures the connector for mating with a receptacle, optical device or another connector. A fiber optic connector including a connector outer housing defining a first key slot for positioning the connector housing in a first keyed position and a second key slot for positioning the connector housing in a second keyed position, a connector inner housing defining a key and a ferrule assembly including a ferrule and a ferrule holder, wherein the ferrule assembly is biased outwardly within the connector outer housing. The connector outer housing is independently positionable between the first keyed position for end face polishing and the second keyed position for connector mating.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates generally to fiber optic connectors, and more specifically, to a duplex fiber optic connector having positionable ferrules that allow the ferrules to be rotated between a first keyed position for simultaneous coplanar end face polishing, and a second keyed position for mating with a receptacle, optical device or another connector of complimentary ferrule configuration with proper end face contact. [0003] 2. Technical Background [0004] A variety of optical connectors have been developed to facilitate the interconnection of optical fibers with other optical fibers, optical devices or the like. In this regard, a number of simplex, duplex and multi-fiber connectors including standard ferrules, such as SC, LC, FC, MU, MT and MTP, have been designed. A common type of connector includes an angled-physical-contact (APC) ferrule that is designed to make physical contact with another APC ferrule ...

AI Technical Summary

Benefits of technology

[0008] One aspect of the invention is a duplex fiber optic connector including a first single fiber ferrule and a second single fiber ferrule arranged side-by-side, wherein the first and the second single fiber ferrules may be independently rotated between a first keyed position and a second keyed position. The first keyed position properly aligns the end face of the first ferrule and the end face of the second ferrule substantially in the same plane for simultaneous coplanar end face polishing us...

Problems solved by technology

In this regard, the removal of either too much or too little material during the process of polishing the end faces typically results in a misalignment of mating ferrules, which decreases signal transmission.

By aligning the ferrules side-by-side, with the ferrule end faces in different planes, it is not possible to simultaneously polish the two ferrule end faces in the same plane using conventional apparatus and processes.

When assembling a hardened duplex fiber optic connector using conventional LC or SC APC ferrules, the design of the hardened connector does not allow the ferrules to be separated and their end faces oriented into the same plane for simultaneous polishing.

By polishing the end faces individually, one end face may be polished differently than the other, thus resulting in connector-to-connector mating with improper end face contact and resulting signal loss.

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