Optical fiber, optical fiber preform, and manufacturing...

Details Optical fiber, optical fiber preform, and manufacturing... Optical fiber, optical fiber preform, and manufacturing...

2006-07-04

2006-07-04

Vincent, Sean (Department: 1731)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

With measuring, controlling, sensing, programming, timing,...

C065S415000

Reexamination Certificate

active

07069748

ABSTRACT:
An optical fiber and an optical fiber preform having optical characteristics, such as the wavelength dispersion, close to design values by controlling the amount of change in the refractive index in the core, thereby realizing high-quality and high-speed transmission, and manufacturing methods therefor. The optical fiber or the optical fiber preform is manufactured in a manner such that at each position in the area in which the relative refractive index of the core with respect to the cladding is 80% or higher of the maximum value of the relative refractive index, the absolute value of the rate of change of the relative refractive index with respect to the position along the diameter of the cladding is 0.5 or less, where the position along the diameter of the cladding is defined by percentage with respect to the diameter.

REFERENCES:
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patent: 1136849 (2001-09-01), None
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patent: 9263418 (1997-10-01), None
First Examination Report dated Dec. 12, 2003 from Indian Patent Application No. 612/CAL/02.

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