公开(公告)号：US20210231864A1

公开(公告)日：2021-07-29

申请号：US17232221

申请日：2021-04-16

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kazunori MUKASA

IPC: G02B6/036 ,  G02B6/02 ,  C03C3/06

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.

公开(公告)号：US20140029906A1

公开(公告)日：2014-01-30

申请号：US13962642

申请日：2013-08-08

Applicant: Furukawa Electric Co., Ltd.

Inventor： Kazunori MUKASA

IPC: G02B6/02

CPC classification number: G02B6/03627 ,  G02B6/02 ,  G02B6/02019 ,  G02B6/02042 ,  G02B6/02047 ,  G02B6/0365

Abstract: An optical fiber includes a core portion and a cladding portion that is formed on an outer periphery of the core portion and has a refractive index lower than a maximum refractive index of the core portion. Characteristics at a wavelength of 1550 nm are an effective core area of a fundamental propagation mode of equal to or larger than 120 μm2, an effective core area of a first higher-order propagation mode of equal to or larger than 170 μm2, and an effective refractive index of the first higher-order propagation mode of larger than the refractive index of the cladding portion by equal to or larger than 0.0005.

Abstract translation: 光纤包括芯部和包层部分，其形成在芯部分的外周上并具有低于芯部的最大折射率的折射率。 在1550nm波长处的特性是等于或大于120mum2的基本传播模式的有效核心区域，等于或大于170mum2的第一高阶传播模式的有效核心区域，以及有效的核心区域 第一高阶传播模式的折射率大于包层部分的折射率等于或大于0.0005。

公开(公告)号：US20130209106A1

公开(公告)日：2013-08-15

申请号：US13841818

申请日：2013-03-15

Applicant: Furukawa Electric Co., Ltd.

Inventor： Kazunori MUKASA

IPC: G02B6/036 ,  H04B10/2507

CPC classification number: G02B6/036 ,  G02B6/02042 ,  G02B6/02342 ,  H04B10/2507 ,  H04J14/02 ,  H04J14/04

Abstract: An optical transmission system includes: a multi-core optical fiber having a plurality of core portions. Signal light beams having wavelengths different from each other are caused to be input to adjacent core portions of the plurality of core portions. The adjacent core portions are the most adjacent to each other in the multi-core optical fiber.

Abstract translation: 光传输系统包括：具有多个核心部分的多芯光纤。 使具有彼此不同的波长的信号光束被输入到多个芯部的相邻芯部。 在多芯光纤中相邻的芯部彼此最相邻。