Optical fiber assemblies having relatively low-levels of...

Details Optical fiber assemblies having relatively low-levels of... Optical fiber assemblies having relatively low-levels of...

2007-06-26

2009-12-08

Petkovsek, Daniel (Department: 2874)

Optical waveguides

Optical transmission cable

C385S109000, C385S114000

Reexamination Certificate

active

07630605

ABSTRACT:
Disclosed are fiber optic assemblies having at least one optical fiber and a water-swellable powder within a tube and/or cavity and methods for making the same. Fiber optic assemblies of the present invention use relatively low-levels of water-swellable powder while still effectively blocking the migration of tap water and/or saline solutions of 3% by weight along the tube and/or cavity. Furthermore, cleaning of the optical fibers is not necessary before connectorization like with conventional fiber optic cables that use a gel or grease. Generally speaking, at least some of the water-swellable powder is transferred to the inside surface of the tube, cavity, optical fiber or the like; rather, than being a loose powder that is able to migrate within the tube or cavity. Moreover, the existence of water-swellable powder within the fiber optic assembly or cable is nearly transparent to the craft since relatively low-levels are possible.

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TIA Document: “FOTP 82-B Fluid Penetration Test for Fluid-Blocked Fiber Optic Cable”; TIA-455-82-B (Revision of EIA/TIA-455-82-A), Jun. 2003.

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