Optical fiber

Details Optical fiber Optical fiber

2007-01-16

2007-01-16

Wood, Kevin S. (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S123000, C385S126000

Reexamination Certificate

active

11244195

ABSTRACT:
An optical fiber includes: a core at a center; a first cladding layer; a second cladding layer; and a third cladding layer. A maximum refractive index of the core is greater than any of maximum refractive indices of the first cladding layer, the second cladding layer, and the third cladding layer, and the maximum refractive index of the second cladding layer is smaller than any of the maximum refractive indices of the first and the third cladding layer. Additionally, a ratio of a2/a1is not less than about 2.5 and not more than about 4.5, where a1represents the radius of the core, and a2represents the radius of an outer periphery of the first cladding layer, and a relative refractive index difference of the core with respect to a maximum refractive index of the third cladding layer is not less than 0.20% and not more than 0.70%.

REFERENCES:
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patent: WO 2000/031573 (2000-06-01), None

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