Optical fiber
    1.
    发明授权
    Optical fiber 失效
    光纤

    公开(公告)号:US4679899A

    公开(公告)日:1987-07-14

    申请号:US706574

    申请日:1985-02-28

    IPC分类号: C03C25/10 G02B6/44 G02B6/10

    CPC分类号: C03C25/106 C03C25/1065

    摘要: An optical fiber of a silica-based material includes a coating of cured silicone rubber covering an outer surface thereof. The cured silicone rubber coating, when subjected to an infrared spectroscopic measurement, has a transmissivity of not less than 70% at a wave number of 2100 to 2200 cm.sup.-1 at a coating thickness of 0.1 mm due to the infrared absorption due to the stretching and vibration of SiH. The coating of cured silicone rubber contains a neglibible amount of SiH so that the transmission loss of the optical fiber can be prevented from increasing over a long period of time.

    摘要翻译: 二氧化硅系材料的光纤包括覆盖其外表面的固化硅橡胶的涂层。 固化的硅橡胶涂层在进行红外光谱测量时,由于拉伸的红外吸收,涂布厚度为0.1mm,波数为2100〜2200cm -1,透光率为70%以上 和SiH的振动。 固化的硅橡胶的涂层含有可负的量的SiH,从而可以防止光纤的传输损耗在长时间内增加。

    Zero dispersion single mode optical fiber with center core and side core
in the 1.5 .mu.m wavelength region
    2.
    发明授权
    Zero dispersion single mode optical fiber with center core and side core in the 1.5 .mu.m wavelength region 失效
    零色散单模光纤,中心芯和侧芯在1.5μm波长区域

    公开(公告)号:US4755022A

    公开(公告)日:1988-07-05

    申请号:US901619

    申请日:1986-08-29

    摘要: A 1.5 .mu.m zero dispersion single mode optical fiber comprising a center core, a side core disposed on an outer side of the center core and having a refractive index lower than that of the center core, and a cladding portion disposed on an outer side of the side core. Each of the refractive indices of the center core and the side core has a step-like profile in the direction of the radius of the optical fiber. The bending loss is low. The mode field diameter can be increased without deteriorating the bending loss, and the splice loss can be reduced. The chromatic dispersion varies only to a small extent with respect to changes in the core diameter, so that the zero dispersion wavelength can be well controlled.

    摘要翻译: 一种1.5μm的零色散单模光纤,包括中心芯,设置在中心芯的外侧上的折射率低于中心芯的折射率的侧芯,以及设置在中心芯的外侧的包层部分 侧核。 中心纤芯和侧芯的每个折射率在光纤的半径方向上具有阶梯状轮廓。 弯曲损耗低。 可以在不降低弯曲损耗的情况下增加模场直径,并且可以减少接头损耗。 相对于纤芯直径的变化,色散仅有很小程度的变化,从而可以很好地控制零色散波长。