公开(公告)号：US20210199883A1

公开(公告)日：2021-07-01

申请号：US17200458

申请日：2021-03-12

Applicant: FURUKAWA ELECTRIC CO. LTD.

Inventor： Minoru KASAHARA ,  Yoshihiro ARASHITANI ,  Kouji MOCHIDUKI ,  Masahiro YABE

IPC: G02B6/02 ,  C03C25/1065 ,  C03C25/105

Abstract: Provided is a coated optical fiber and an optical fiber cable capable of suppressing transmission loss (microbend loss) even in an optical fiber having high microbend sensitivity.
In the present invention, the degree of freedom of a primary layer 11 represented by the equation (I) and the rigidity of a secondary layer 12 represented by the equation (II) are set in specific ranges, respectively. Thus, the present invention provides a coated optical fiber 1 capable of suppressing the transmission loss even when an optical fiber 10 having high microbend sensitivity such as a BI fiber having a large effective core cross-sectional area Aeff of an optical fiber is used. The present invention can be widely used as a coated optical fiber 1 constituting a coated optical fiber ribbon or as a coated optical fiber 1 housed in an optical fiber cable. Further, an optical fiber cable including such coated optical fibers 1 enjoys the effect of the above-described coated optical fiber 1. [Math. 1] βP×PISM≥600   (I) (S/P)×(SISM/PISM)≤1,000   (II)

公开(公告)号：US20140226941A1

公开(公告)日：2014-08-14

申请号：US14144464

申请日：2013-12-30

Applicant: Furukawa Electric Co., Ltd.

Inventor： Hiroki TANAKA ,  Minoru KASAHARA ,  Kouji MOCHIDUKI ,  Minoru SAITO ,  Yasuo NAKAJIMA

IPC: G02B6/44

CPC classification number: G02B6/4403 ,  G02B6/02395 ,  G02B6/4402 ,  G02B6/4409 ,  G02B6/4482

Abstract: The present invention provides a colored optical fiber that shows anti-microbend property and hot-water resistance, an optical fiber ribbon that utilizes the same, and an optical fiber cable.It is a colored optical fiber 1, which comprises two coating layers of a primary coating layer 31 and a secondary coating layer 32, wherein either one of the primary coating layer 31 or the secondary coating layer 32 is colored, both coating layers have equilibrium elastic moduli of 60 MPa or less, and the secondary coating layer 32 has a relaxation modulus of 410 MPa or more, an optical fiber ribbon 4 that utilizes it, and an optical fiber cable 8.

Abstract translation: 本发明提供一种显示抗微生物性和耐热水性的有色光纤，利用该光纤的光纤带和光缆。 它是一种有色光纤1，其包括两个主要涂层31和第二涂层32的涂层，其中主涂层31或次涂层32中的任一个被着色，两个涂层均具有平衡弹性 60MPa以下的模量，第二被覆层32的松弛模量为410MPa以上，利用它的光纤带4和光纤电缆8。