公开(公告)号：US20130243380A1

公开(公告)日：2013-09-19

申请号：US13887860

申请日：2013-05-06

Applicant: FUJIKURA LTD. ,  OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION

Inventor： Ryo MARUYAMA ,  Nobuo KUWAKI ,  Shoichiro MATSUO ,  Masaharu OHASHI

IPC: G02B6/02

CPC classification number: G02B6/02 ,  G02B6/02019 ,  G02B6/03627

Abstract: An optical fiber (1) includes (i) an inner core (111) whose refractive index distribution has an a profile, (ii) an outer core (112) which surrounds the inner core (111), and (iii) a clad (12) which surrounds the outer core (112). In the optical fiber (1), Rd is set to not less than 0.15, where Rd is a ratio of a refractive index difference between the outer core (112) and the clad (12) to a refractive index difference between a center part of the inner core (111) and the clad (12).

Abstract translation: 光纤（1）包括（i）其折射率分布具有轮廓的内芯（111），（ii）围绕内芯（111）的外芯（112），以及（iii）包层 12）围绕外芯（112）。 在光纤（1）中，Rd被设定为不小于0.15，其中Rd是外芯（112）和包层（12）之间的折射率差之比与中心部分之间的折射率差 内芯（111）和包层（12）。

公开(公告)号：US20130272668A1

公开(公告)日：2013-10-17

申请号：US13912584

申请日：2013-06-07

Applicant: Fujikura Ltd.

Inventor： Mamoru SATO ,  Shoichiro MATSUO

IPC: G02B6/02

CPC classification number: G02B6/02 ,  G02B6/02266 ,  G02B6/03683 ,  G02B6/03688

Abstract: An optical fiber of the invention satisfies Δcore>Δic>Δtmax>Δtmin, −0.15%≧Δtmax>Δtmin≧−0.7%, and 0.45≦(rtmax−rin)/(rout−rin)≦0.9 where the relative refractive index difference of the core is Δcore, the relative refractive index difference of the internal cladding coat is Δic, the relative refractive index difference of a highest refractive index layer in the trench coating is Δtmax, the relative refractive index difference of a lowest refractive index layer in the trench coating is Δtmin, the radius of an internal edge of the trench coating is rin, the radius of an external edge of the trench coating is rout, and the radius of an internal edge of a highest refractive index layer in the trench coating is rtmax and where the relative refractive index differences are based on a refractive index of the outermost cladding coat.

Abstract translation: 本发明的光纤满足Deltacore>Δt> Deltatmax> Deltatmin，-0.15％> = Deltatmax> Deltatmin> = -0.7％，和0.45 @（rtmax-rin）/（rout-rin）@ 0.9，其中相对折射率 芯的差异是Deltacore，内包层的相对折射率差为Δic，沟槽涂层中最高折射率层的相对折射率差为Deltatmax，最低折射率层的相对折射率差为 沟槽涂层是Deltatmin，沟槽涂层的内部边缘的半径为rin，沟槽涂层的外部边缘的半径为断开，并且沟槽涂层中最高折射率层的内部边缘的半径为 rtmax，其中相对折射率差基于最外层敷层的折射率。