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    • 97. 发明专利
    • Single mode optical fiber
    • 单模光纤
    • JP2007279739A
    • 2007-10-25
    • JP2007099081
    • 2007-04-05
    • Draka Comteq Bvドラカ・コムテツク・ベー・ベー
    • DE MONTMORILLON LOUIS-ANNEMOLIN DENISMATTHIJSSE PIETERGOOIJER FRANSPETITFRERE EMMANUELLUMINEAU YVESACHTEN FRANCISCUS JOHANNESBIGOT-ASTRUC MARIANNESILLARD PIERRENOUCHI PASCALE
    • G02B6/036G02B6/00
    • G02B6/03688G02B6/02266
    • PROBLEM TO BE SOLVED: To provide an optical transmission fiber having a certain step refractive index profile with a first high depression section and a second low depression section. SOLUTION: The optical transmission fiber comprises: a central core; a first intermediate cladding having an index difference Dn 2 with the outer cladding; a first depressed cladding having an index difference Dn 3 with the outer cladding which is higher than or equal to -5.10 -3 ; a second intermediate cladding having a cladding having an index difference Dn 4 with the outer cladding; and second depressed cladding having an index difference Dn 5 with the outer cladding. The optical fiber presents at a wavelength of 1625 nm, bending losses inferior or equal to 0.1 dB/10 turns for a bending radius of 15 mm, and bending losses inferior or equal to 0.5 dB/turn for bending radius of 7.5 mm. The optical fiber presents reduced bending and micro-bending losses while presenting optical performance of a standard step refractive index transmission fiber (ssmf). COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供具有一定阶梯折射率分布的光传输光纤与第一高凹部和第二低凹部。 光传输光纤包括:中心芯; 具有与外包层的折射率差Dn 2 的第一中间包层; 外包层的折射率差Dn <3> 的第一凹陷包层高于或等于-5.10 -3 ; 具有外包层的折射率差Dn 4 的包层的第二中间包层; 以及具有与外包层的折射率差Dn 5 的第二凹陷包层。 光纤的波长为1625nm,弯曲半径为15mm时的弯曲损耗低于或等于0.1dB / 10圈,弯曲半径为7.5mm的弯曲损耗为0.5dB /圈以下。 光纤具有降低的弯曲和微弯曲损耗,同时呈现标准阶跃折射率传输光纤(ssmf)的光学性能。 版权所有(C)2008,JPO&INPIT