Optical fiber
AssigneeFurukawa Electric Co., Ltd.
InventorKazunori MUKASA
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Abstract
An object is to obtain an optical fiber having a small diameter and suppressing the increase of a microbending loss of the optical fiber. The optical fiber includes: a core portion made of silica glass; a cladding portion made of silica glass, the cladding portion covering the outer periphery of the core portion and having a refractive index smaller than a maximum refractive index of the core portion; and a coating portion covering the outer periphery of the cladding portion. The outer diameter of the cladding portion is 100 μm or smaller, the relative refractive-index difference Δ1 of the core portion is 0.5% or smaller, and the thickness of the coating portion is 10 μm or larger.
Claims12
An optical fiber, comprising:
- a core portion that is made of silica glass;
- a cladding portion that is made of silica glass, the cladding portion covering an outer periphery of the core portion and having a refractive index smaller than a maximum refractive index of the core portion;
- and
- a coating portion that covers the outer periphery of the cladding portion, wherein
- an outer diameter of the cladding portion is 100 μm or smaller,
- a relative refractive-index difference Δ1 of the core portion is 0.5% or smaller, and
- a thickness of the coating portion is 10 μm or larger.
Dependencies are inferred from the claim text.