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Connector for Optical Fiber Cable With Key for Setting Radial Alignment for Minimum Loss

IP.com Disclosure Number: IPCOM000041622D
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Hayward, CE: AUTHOR [+2]

Abstract

A tunnel section of a connector for a fiber-optic cable has a washer with keys that extend radially outward. The washer fits loosely over the outer surface of the tunnel, but it is locked in a fixed radial position, for example, by matching flat surfaces along chords of the tunnel and the center hole of the washer. When one of these keys is bent downward, it projects into the space that would normally be occupied by a sleeve on the cable connector. The sleeve has a key way that receives the key when the connector is in the matching radial position. When maintenance personnel have rotated the cable to the radial position for best optical characteristics, the nearest key is bent into its locking position and the connector is assembled with the key extending into the key way of the cable connector.

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Connector for Optical Fiber Cable With Key for Setting Radial Alignment for Minimum Loss

A tunnel section of a connector for a fiber-optic cable has a washer with keys that extend radially outward. The washer fits loosely over the outer surface of the tunnel, but it is locked in a fixed radial position, for example, by matching flat surfaces along chords of the tunnel and the center hole of the washer. When one of these keys is bent downward, it projects into the space that would normally be occupied by a sleeve on the cable connector. The sleeve has a key way that receives the key when the connector is in the matching radial position. When maintenance personnel have rotated the cable to the radial position for best optical characteristics, the nearest key is bent into its locking position and the connector is assembled with the key extending into the key way of the cable connector. When the cable is disconnected for normal maintenance, it can be reconnected in its optimum radial position without repeating the test. Some optical fiber cables have a single fiber that is enclosed in a protective structure. The end of the cable is terminated in a screw-type connector. A connector structure that is called an alignment tunnel removably receives two cables and holds their fibers in close alignment. The tunnel and the end of each cable also have a screw attachment. If the fibers are slightly out of alignment, the connector may cause excessive losses in the light that it...