Multiple cladding optical fiber

Details Multiple cladding optical fiber Multiple cladding optical fiber

2006-01-10

2006-01-10

Healy, Brian (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

C385S124000, C385S125000, C385S126000, C385S127000, C385S128000, C398S081000, C398S147000

Reexamination Certificate

active

06985660

ABSTRACT:
An optical fiber comprises a core region extending along a predetermined axis X, and a cladding region surrounding the core region. The cladding region14comprises first to (N+1)-th regions such that the first region surrounds the core region, and the (k+1)-th region surrounds the k-th region (k=1, 2, . . . , N). At least one of the first to (N+1)-th regions includes, in a main medium having a predetermined refractive index, a sub-region made of an auxiliary medium having a refractive index different from that of the main medium. Letting n[0] be the average refractive index of the core region, and n[k] (k=1, 2, . . . , N+1) be the average refractive index of the k-th region, this optical fiber satisfies the relationship of n[0]>n[1], and n[i]>n[i+1] (∀i=h, h+1, . . . , h+m; where h and m are natural numbers).

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