Optical fiber splicing method and optical transmission line
    1.
    发明授权
    Optical fiber splicing method and optical transmission line 失效
    光纤拼接方式和光传输线

    公开(公告)号:US06729777B2

    公开(公告)日:2004-05-04

    申请号:US10026445

    申请日:2001-12-27

    IPC分类号: G02B6255

    摘要: A method of splicing optical fibers is provided to reduce the splicing loss of the first and second optical fibers having different MFDs from each other. In a pre-fusion heating step, the MFD at the adjacent end face of the optical fiber having larger MFD is enlarged by heating a portion including the adjacent end face thereof so as to diffuse a dopant. After the pre-fusion heating step, fusion-splicing of the first and the second optical fibers is performed. Thereafter, during the post-fusion heating step, the dopant is diffused by heating a portion including the fusion-spliced part between the first and the second optical fibers.

    摘要翻译: 提供了一种拼接光纤的方法,以减少具有不同MFD的第一和第二光纤的拼接损耗。 在预融合加热步骤中,通过加热包含其相邻端面的部分以扩散掺杂剂,使具有较大MFD的光纤的相邻端面处的MFD扩大。 在预融合加热步骤之后,进行第一和第二光纤的熔接。 此后,在熔融后加热步骤期间,通过加热包括第一和第二光纤之间的熔接部分的部分来扩散掺杂剂。

    Optical fiber transmission line
    2.
    发明授权
    Optical fiber transmission line 失效
    光纤传输线

    公开(公告)号:US06644870B2

    公开(公告)日:2003-11-11

    申请号:US10103134

    申请日:2002-03-22

    IPC分类号: G02B6255

    摘要: The present invention relates to an optical fiber transmission line having a structure offering superior connection loss characteristics at the fusion-spliced position between optical fibers. This optical fiber transmission line has at least first and second optical fibers that are fusion-spliced. Each of these first and second optical fibers has a core region doped with 10 mol % or more of Ge and has a mode field diameter with a minimum value of 7 &mgr;m or less at the wavelength of 1550 nm. The difference between the minimum mode diameter of the first optical fiber and that of the second optical fiber is 1 &mgr;m or less.

    摘要翻译: 本发明涉及一种具有在光纤之间的熔接位置提供优异的连接损耗特性的结构的光纤传输线。 该光纤传输线至少具有熔接的第一和第二光纤。 这些第一和第二光纤中的每一个具有掺杂有10mol%以上的Ge的芯区域,并且在1550nm的波长下具有最小值为7μm或更小的模场直径。 第一光纤的最小模式直径与第二光纤的最小模式直径的差为1um或更小。

    Soft ocular lens material
    3.
    发明授权
    Soft ocular lens material 失效
    软眼镜镜片材质

    公开(公告)号:US5416180A

    公开(公告)日:1995-05-16

    申请号:US149530

    申请日:1993-11-09

    摘要: A soft ocular lens material obtained by copolymerizing polymerizable components comprising (A) a fluorine-containing (meth)acrylate having a hydroxyl group of the formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a C.sub.5-15 perfluoroalkyl group, and n is 0 or 1, (B) a hydrophilic monomer, and (C) at least one monomer selected from the group consisting of silicon-containing (meth)acrylates and siloxane-containing styrene derivatives, wherein the ratio of the amount of the fluorine-containing (meth)acrylate (A) to the amount of the hydrophilic monomer (B) is from 20/80 to 70/30 by weight ratio, and the ratio of the total amount of the fluorine-containing (meth)acrylate (A) and the hydrophilic monomer (B) to the amount of the monomer (C) is from 30/70 to 90/10 by weight ratio.

    摘要翻译: 通过使包含(A)具有式(I)的羟基的含氟(甲基)丙烯酸酯:其中R 1为氢原子或甲基的式(I)表示的可聚合组分共聚合得到的柔软的眼用透镜材料, R2是C5-15全氟烷基,n是0或1,(B)亲水性单体,和(C)至少一种选自含硅(甲基)丙烯酸酯和含硅氧烷的苯乙烯衍生物的单体 其中,所述含氟(甲基)丙烯酸酯(A)的量与所述亲水性单体(B)的配合量的比例为20/80〜70/30重量比, 含氟(甲基)丙烯酸酯(A)和亲水性单体(B)相对于单体(C)的含量为30/70〜90/10重量比。

    Water-absorptive soft contact lens
    7.
    发明授权
    Water-absorptive soft contact lens 失效
    吸水软性隐形眼镜

    公开(公告)号:US5741830A

    公开(公告)日:1998-04-21

    申请号:US600877

    申请日:1996-02-13

    摘要: A water-absorptive soft contact lens comprising a polymer prepared by polymerizing a monomer mixture comprising (A) a fluorine-containing styrene derivative represented by the general formula (I): ##STR1## wherein R.sup.1 is hydrogen atom or methyl group, m is an integer of 1 to 3 and n is 0 or an integer of 1 to 7, and (B) N, N-dimethyl(meth)acrylamide. The water-absorptive soft contact lens has excellent oxygen permeability, high mechanical strength and excellent flexibility independent of water content.

    摘要翻译: 一种吸水软性隐形眼镜,其包含通过聚合单体混合物制备的聚合物,所述单体混合物包含(A)由通式(I)表示的含氟苯乙烯衍生物:其中R 1为氢原子或甲基, m为1〜3的整数,n为0或1〜7的整数,(B)N,N-二甲基(甲基)丙烯酰胺。 吸水软性隐形眼镜具有优异的透氧性,高机械强度和优异的柔韧性,独立于含水量。