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Browse Prior Art Database

Use of Composite Materials for Cabling/Microduct Blown Fiber

IP.com Disclosure Number: IPCOM000102327D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Grune, GL: AUTHOR [+1]

Abstract

This disclosure encompasses the following design for a "blown" fiber, cable/duct system which requires using unique material compositions for such a design. A "blown" fiber cable refers to a system wherein a hollow tube or duct is installed, normally within a raceway of a building. Subsequent to installation, fibers capable of carrying a light signal are blown into the duct using compressed air.

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This is the abbreviated version, containing approximately 64% of the total text.

Use of Composite Materials for Cabling/Microduct Blown Fiber

       This disclosure encompasses the following design for a
"blown" fiber, cable/duct system which requires using unique material
compositions for such a design.  A "blown" fiber cable refers to a
system wherein a hollow tube or duct is installed, normally within a
raceway of a building. Subsequent to installation, fibers capable of
carrying a light signal are blown into the duct using compressed air.

      Current designs of such "blown" fiber cables/ducts for plenum
usage have been essentially non-manufacturable due to the excessive
costs involved when using conventional materials and constructions.
Our proposed use of materials and construction would allow for a
great cost savings to the manufacturer as well as allowing for
superior mechanical properties and a significant reduction in
flammability/toxicity hazards associated with current installations
of plenum cables.

      Fig. 1 illustrates the concept of the outer duct, which would
be composed of aluminum or other metallic or non-metallic materials
providing high strength (>3,000 psi) and good flexibility.  In
addition, a potentially useful outer coating of highly filled PVC
would be used to reduce friction which occurs during installation and
enhance the ease of pullability of such cables/ducts.  Also, an inner
coating of the same material, also used to reduce friction required
when blowing glass fibers via the "blown" fiber concept, wo...