Method for the manufacture of optical fibers and improved...

Details Method for the manufacture of optical fibers and improved... Method for the manufacture of optical fibers and improved...

2007-10-30

2009-10-13

Doan, Jennifer (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S024000, C385S123000, C385S124000, C385S125000, C385S126000

Reexamination Certificate

active

07603014

ABSTRACT:
The present invention is directed to a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength band used in state-of-the-art transmission systems. It allows compensation of a large number of channels using a single fiber design. The improved optical fiber of the invention exhibits a dispersion slope at 1550 nm: <0.02 ps
m2-km, preferably <0.01 ps
m2-km, and a maximum variation of dispersion per km over the S-, C-, and L- bands of preferably less than 2.0 ps. In a preferred embodiment, the index profile of these fibers comprises a simple three layer design, which includes an up-doped central core, surrounded by a down-doped trench region, further surrounded by an up-doped ring region.

REFERENCES:
patent: 6711331 (2004-03-01), Sasaoka et al.

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