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25 条记录 (耗时 0.011 秒)

    Optical fiber manufacture
    3.
    发明公开
    Optical fiber manufacture 失效
    Herstellung von optischen Fasern

    公开(公告)号：EP0860719A2

    公开(公告)日：1998-08-26

    申请号：EP98300949.9

    申请日：1998-02-10

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： DiGiovanni, David John ,  Yan, Man Fei ,  Jacobs, Steven Alan

    IPC分类号： G02B6/16

    CPC分类号： C03B37/01257 ,  C03B37/01869

    摘要： The specification describes a process and apparatus for monitoring and controlling the ellipticity of preform tubes during Modified Chemical Vapor Deposition. In response to computer generated signals from the monitoring device, the tube collapse rate is adjusted dynamically by locally changing the temperature of the glass tube, or by changing the physical force acting to collapse the tube.

    摘要翻译： 该说明书描述了用于在改进的化学气相沉积期间监测和控制预成型管的椭圆率的方法和装置。 响应于来自监测装置的计算机产生的信号，通过局部改变玻璃管的温度或通过改变用于使管塌缩的物理力来动态地调节管塌陷率。

    Article comprising a cladding pumped optical fiber laser
    5.
    发明公开
    Article comprising a cladding pumped optical fiber laser 失效
    装置通过所述封套的光纤激光器泵浦

    公开(公告)号：EP0831566A3

    公开(公告)日：2000-04-05

    申请号：EP97307171.5

    申请日：1997-09-16

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： DiGiovanni, David John ,  Vengsarkar, Ashish Madhukar

    IPC分类号： H01S3/06

    CPC分类号： H01S3/094003 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/094007

    摘要： A cladding pumped optical fiber laser (40) comprises a length of optical fiber having a rare earth-doped region of diameter d RE > d 01 , where d 01 is the mode diameter of the LP 01 mode of the fiber at the laser radiation at wavelength λ. In one embodiment the fiber has a core diameter d c selected such that the LP 01 mode is the only guided spatial mode of the fiber, and d RE is greater than d c . In another embodiment the fiber supports at least one higher order guided spatial mode, typically LP 11 or LP 02 , and d RE is approximately equal to or larger than d c . Currently preferred embodiments comprise a grating-defined laser cavity that comprises a mode-coupling refractive index grating (45). Cladding pumped lasers according to the invention will typically have efficient conversion of pump radiation to laser radiation, and consequently can typically be shorter than analogous prior art cladding pumped lasers.

    Fiber light source with multimode fiber coupler
    6.
    发明公开
    Fiber light source with multimode fiber coupler 失效
    带多模光纤耦合器的光纤光源

    公开(公告)号：EP0812039A2

    公开(公告)日：1997-12-10

    申请号：EP97303565.2

    申请日：1997-05-27

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： DiGiovanni, David John ,  Grubb, Stephen Gregory ,  Inniss, Daryl ,  Jameson, Ralph Stephen ,  Walker, Kenneth Lee

    IPC分类号： H01S3/06 ,  H01S3/094

    CPC分类号： G02B6/4215 ,  G02B6/14 ,  G02B6/29356 ,  G02B6/2937 ,  G02B6/4207 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/094069

    摘要： In an optical fiber light source a section of multimode fiber (51) is interposed between an energizing laser (e.g., a diode laser (49)) and a single mode fiber active medium (43). In a preferred embodiment the single mode fiber active medium is surrounded by a multimode cladding (45) coupled to the multimode fiber. The source may serve as a pump laser for a fiber amplifier (30) or as an amplified spontaneous emission source. Arrangements for coupling several energizing lasers to the active medium are also described.

    摘要翻译： 在光纤光源中，一段多模光纤（51）插入激励激光器（例如二极管激光器（49））和单模光纤有源介质（43）之间。 在一个优选实施例中，单模光纤活性介质被耦合到多模光纤的多模包层（45）包围。 光源可以用作光纤放大器（30）的泵浦激光器或放大的自发辐射源。 还描述了将几个激励激光器耦合到激活介质的装置。

    Method of making a multimode optical fiber and fiber made by the method
    10.
    发明公开
    Method of making a multimode optical fiber and fiber made by the method 审中-公开
    由此获得一种制造多模光纤的方法，和纤维

    公开(公告)号：EP1101744A3

    公开(公告)日：2002-06-12

    申请号：EP00309835.7

    申请日：2000-11-06

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： DiGiovanni, David John ,  Golowich, Steven Eugene ,  Jones, Sean L. ,  Reed, William Alfred

    IPC分类号： C03B37/012 ,  C03B37/018 ,  C03B37/027 ,  C03B37/03 ,  G02B6/16 ,  G02B6/18 ,  H04B10/18

    CPC分类号： C03B37/02745 ,  C03B37/01228 ,  C03B37/01869 ,  C03B37/027 ,  C03B2203/19 ,  C03B2205/06 ,  G02B6/02 ,  G02B6/02052 ,  G02B6/02285 ,  G02B6/0288 ,  G02B2006/0209 ,  Y02P40/57

    摘要： Our method of making high bandwidth silica-based multimode optical fiber comprises provision of a non-circular preform, and drawing fiber of chiral structure from the preform. The non-circular preform can be made by maintaining the inside of the tubular preform under reduced pressure during at least part of the collapse, resulting in a non-circular core and cladding. It can also be made by removal (e.g., by grinding or plasma etching) of appropriate portions of the preform, resulting in a circular core and non-circular cladding. In the latter case, fiber is drawn at a relatively high temperature such that, due to surface tension, the cladding assumes substantially circular shape and the core assumes a non-circular shape. The chiral structure is imposed on the fiber in any appropriate way, e.g., by twisting during fiber drawing the fiber alternately in clockwise and couterclockwise sense relative to the preform.

    摘要翻译： 我们制造高带宽基于二氧化硅的多模光纤的方法包括：提供一种非圆形的预成形件，以及从所述预成型件的手性结构的拉伸纤维。 非圆形预成型件可以由所述崩溃的至少一部分期间保持在减压下的管状预成型件的内部，在一个非圆形的芯和包层所得到的制成。 因此，它可以通过除去制备（例如，通过研磨或等离子蚀刻）预制件的适当部分，在圆形芯和非圆形的覆层得到的。 在后一种情况下，纤维处于相对高温拉伸检查的是，由于表面张力，包层übernimmt基本上圆形的形状，并且所述芯übernimmt非圆形形状。 手性结构施加于以任何方式适当，E. G.纤维，由纤维加捻期间在顺时针和逆时针方向感相对于预成型件可替换地拉制光纤。