Optical fiber unit having excellent elasticity and optical...

Details Optical fiber unit having excellent elasticity and optical... Optical fiber unit having excellent elasticity and optical...

2006-04-18

2006-04-18

Healy, Brian (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S123000, C385S100000

Reexamination Certificate

active

07031583

ABSTRACT:
Disclosed are an optical fiber unit in which at least 1-core optical fiber is mounted in and protected by a buffer tube, and an optical cable including the optical fiber unit. The buffer tube is made of a mixture, which includes a composite resin including a resin selected from polyolefin polymer, nitrile rubber and their mixture, and plasticized polyvinylchloride; and an inorganic additive, wherein, in a stress-strain curve of the buffer tube, a modulus is 5 to 50 kgf/mm2in a linear region with an elongation less than 1% and a tan δ is less than 0.5 at 30° C. The buffer tube of the optical fiber unit may be very usefully applied to an optical cable because it may be easily cut out to ensure easy contact and gives excellent elasticity without being crushed by lateral pressure.

REFERENCES:
patent: 6579914 (2003-06-01), Gantt et al.

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