Optical fiber and method of measuring coefficient of kinetic...

Details Optical fiber and method of measuring coefficient of kinetic... Optical fiber and method of measuring coefficient of kinetic...

2006-08-01

2006-08-01

Pak, Sung (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C073S009000

Reexamination Certificate

active

07085465

ABSTRACT:
An optical fiber of the present invention comprising a bare optical fiber and one or plural coating layers on the bare optical fiber, wherein Y, the Young's modulus of the outermost coating layer is in the range of 400 to 1000 and μ, a coefficient of kinetic friction which occurs between the outermost coating layers is equal to or larger than 0.15, and further satisfying the following formulas (a) and (b);in-line-formulae description="In-line Formulae" end="lead"?μ≦−0.9822 LogY+3.45156   (a)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?μ≧−0.5418 LogY+1.74128,   (b)in-line-formulae description="In-line Formulae" end="tail"?wherein the unit of Y is MPa.By the present invention, optical fibers with a low rate of occurrences of the attenuation discontinuity in a measurement result by OTDR and the method of measuring the coefficient of kinetic friction of optical fiber with high reliability are offered.

REFERENCES:
patent: 5561730 (1996-10-01), Lochkovic et al.
patent: 6048911 (2000-04-01), Shustack et al.
patent: 6362249 (2002-03-01), Chawla
patent: 6584263 (2003-06-01), Fewkes et al.
patent: 6775451 (2004-08-01), Botelho et al.
patent: 11-194071 (1999-07-01), None

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