IP Library › Granted Patent US 7,043,128
Granted Patent B2
US 7,043,128 · App. 10/786,738 · Granted May 9, 2006

Multimode optical fibers with increased bandwidth

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Quick Facts
Patent No.
US 7,043,128
App. No.
10/786,738
Granted
May 9, 2006
Kind
B2
Abstract

The specification describes a technique for drawing circular core multimode optical fiber using twist during draw to increase fiber bandwidth.

Claims (7)

1. An article comprising multimode optical fiber having:

i an essentially circular core

ii a radially varying refractive index, and

iii a core diameter greater than 30 microns, with a twist impressed on the core, the twist being at least one per meter of optical fiber.

2. Article according to claim 1 , wherein the twist alternates between clockwise twist and counterclockwise twist.

3. Article according to claim 2 , wherein the twist is at least four per meter of optical fiber.

4. Article according to claim 2 wherein the core has an ovality of less than 6%.