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。