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223 条记录 (耗时 0.029 秒)

    Optical fiber and a method of making
    15.
    发明授权
    Optical fiber and a method of making 有权
    光纤及其制作方法

    公开(公告)号：US07689084B2

    公开(公告)日：2010-03-30

    申请号：US12418766

    申请日：2009-04-06

    申请人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Deborah Lynn Marlatt ,  Ji Wang

    发明人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Deborah Lynn Marlatt ,  Ji Wang

    IPC分类号： G02B6/00 ,  G02B6/02

    CPC分类号： G02B6/443 ,  G02B6/02 ,  G02B6/028

    摘要： According to one example of the invention an optical fiber comprises: (i) a silica based core, said core having a core diameter greater than 80 μm and a numerical aperture NA≧0.24; and (ii) a silica based cladding in contact with and surrounding the core and having a second index of refraction n2, such that n1>n2; wherein the cladding includes B and F. Preferably the numerical aperture NA is at least 0.3.

    摘要翻译： 根据本发明的一个示例，光纤包括：（i）二氧化硅基核，所述芯的芯直径大于80μm，数值孔径NA≥0.24; 和（ii）二氧化硅基包层，其与核心接触并包围并具有第二折射率n2，使得n1> n2; 其中所述包层包括B和F.优选地，所述数值孔径NA至少为0.3。

    Low bend loss coated optical fiber
    17.
    发明申请
    Low bend loss coated optical fiber 有权
    低折射损耗涂层光纤

    公开(公告)号：US20080279516A1

    公开(公告)日：2008-11-13

    申请号：US11801896

    申请日：2007-05-11

    申请人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Jianguo Wang

    发明人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Jianguo Wang

    IPC分类号： G02B6/02

    CPC分类号： C03C25/106 ,  G02B6/02395 ,  G02B6/03683

    摘要： An optical fiber includes a core and a cladding, said cladding having a refractive index nc a first coating directly contacting the cladding of said fiber, said coating having a thickness of less than 10 microns, said coating having a refractive index delta %=100×(ni2-nc2)/2ni2 less than −1 percent. In another aspect, an optical fiber includes a core and a cladding, said cladding having a refractive index nc, a first coating directly contacting the cladding of said fiber, said fiber comprising a glass diameter less than 100 microns, said coating having a thickness of at least 8 microns, said coating having a refractive index delta %=100×(ni2-nc2)/2ni2 less than −1 percent.

    摘要翻译： 光纤包括芯和包层，所述包层具有直接接触所述纤维的包层的第一涂层的折射率n n，所述涂层具有小于10微米的厚度，所述涂层具有 折射率δ％= 100×（n×2）/ 2n（i） 2 小于-1％。 在另一方面，光纤包括芯和包层，所述包层具有折射率n C c，直接接触所述纤维的包层的第一涂层，所述纤维包含小于100的玻璃直径 所述涂层具有至少8微米的厚度，所述涂层具有折射率Δ％= 100×（n×2） 小于-1％的小于2％。

    Single polarization fiber and method of evaluating fiber cutoff wavelengths using optical time domain reflectometry
    18.
    发明授权
    Single polarization fiber and method of evaluating fiber cutoff wavelengths using optical time domain reflectometry 失效
    单极化光纤和使用光时域反射测量法评估光纤截止波长的方法

    公开(公告)号：US07424194B2

    公开(公告)日：2008-09-09

    申请号：US11331905

    申请日：2006-01-13

    申请人： Xin Chen ,  Alan Frank Evans ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    发明人： Xin Chen ,  Alan Frank Evans ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    IPC分类号： G02B6/02

    CPC分类号： C03B37/07 ,  C03B37/0124 ,  C03B2203/14 ,  G01M11/3181 ,  Y02P40/57

    摘要： A method for measuring fundamental mode cutoff wavelength of single polarization fiber comprising: (i) launching pulsed light of at least one wavelength λi into one end of the single polarization fiber; (ii) measuring backscattered light intensity corresponding to said wavelength to obtain the backscattered light intensity as a function of fiber position, wherein the backscattered light propagates through the same end of the fiber; and (iii) determining at least one cutoff wavelength and the corresponding position within said fiber for the cutoff wavelength, based on a specified threshold light intensity level.

    摘要翻译： 一种用于测量单极化光纤的基模截止波长的方法，包括：（i）将至少一个波长λλ的脉冲光发射到单极化光纤的一端; （ii）测量对应于所述波长的反向散射光强度以获得作为光纤位置的函数的背向散射光强度，其中所述反向散射光通过所述光纤的同一端传播; 以及（iii）基于指定的阈值光强度水平确定所述光纤中的至少一个截止波长和所述光纤中的对应位置作为所述截止波长。