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    Dispersion shifted optical waveguide fiber
    2.
    发明公开
    Dispersion shifted optical waveguide fiber 失效
    分散剂选择Faser

    公开(公告)号：EP0798578A1

    公开(公告)日：1997-10-01

    申请号：EP96302013.6

    申请日：1996-03-22

    申请人： CORNING INCORPORATED

    发明人： Bhagavatula, Venkata Adiseshaiah

    IPC分类号： G02B6/22 ,  G02B6/16

    CPC分类号： G02B6/03688 ,  G02B6/02238 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/03666

    摘要： A single mode optical waveguide fiber designed for high data rate, or WDM systems or systems incorporating optical amplifiers. The optical waveguide has a compound core having a central region and at least one annular region surrounding the central region. A distinguishing feature of the waveguide core is that the minimum refractive index of the central core region (24,28,30,40,44) is less than the minimum index of the adjacent annular region (26,32,36,42).
    A relatively simple profile design has the characteristics of ease in manufacturing together with, flexibility in tailoring D, to yield a preselected zero dispersion wavelength, dispersion magnitude over a target wavelength range, and dispersion slope.
    The simplicity of profile gives reduced polarization mode dispersion.

    摘要翻译： 专为高数据速率设计的单模光纤光纤，或包含光放大器的WDM系统或系统。 光波导具有具有中心区域和围绕中心区域的至少一个环形区域的复合芯。 波导芯的一个显着特征是中心芯区域（24,28,30,40,44）的最小折射率小于相邻环形区域（26,32,36,42）的最小折射率。 相对简单的轮廓设计具有易于制造的特征，以及裁剪D的灵活性，以产生预选的零色散波长，目标波长范围上的色散幅度和色散斜率。 轮廓的简单性降低了偏振模色散。

    Planar optical waveguides with planar optical elements
    5.
    发明公开
    Planar optical waveguides with planar optical elements 失效
    Planarer optischer Wellenleiter mit planaren optischen Elementen。

    公开(公告)号：EP0557713A1

    公开(公告)日：1993-09-01

    申请号：EP93100782.7

    申请日：1993-01-20

    申请人： Corning Incorporated

    发明人： Bhagavatula, Venkata Adiseshaiah

    IPC分类号： G02B6/12

    CPC分类号： G02B6/122 ,  G02B6/2808 ,  G02B6/2817

    摘要： A planar optical waveguide comprises a substrate 1, a waveguide core layer 2, at least one planar optical element, wherein said planar optical element comprises at least one optically functional interface 3 which is adjacent to a cavity 4, and an overclad layer 5. The cavity enhances the optical characteristics of the planar optical element because of the substantial difference in the refractive index of the cavity as compared to the refractive index of said waveguide core layer.

    摘要翻译： 平面光波导包括基板1，波导芯层2，至少一个平面光学元件，其中所述平面光学元件包括与空腔4相邻的至少一个光学功能界面3和外包层5。 由于与所述波导芯层的折射率相比，空腔的折射率存在显着差异，因此增加了平面光学元件的光学特性。

    Method of making polarization retaining fiber
    7.
    发明公开
    Method of making polarization retaining fiber 失效
    韦尔法罕zur Herstellung einer polarisationserhaltenden Faser。

    公开(公告)号：EP0484659A2

    公开(公告)日：1992-05-13

    申请号：EP91115338.5

    申请日：1991-09-11

    申请人： Corning Incorporated

    发明人： Berkey, George Edward ,  Bhagavatula, Venkata Adiseshaiah ,  Hawk, Robert Martin ,  Tarcza, Steven Howard

    IPC分类号： C03B37/012 ,  C03C15/00 ,  C03B37/027 ,  C03B23/207 ,  C03B37/014

    CPC分类号： C03B37/01234 ,  C03B37/01217 ,  C03B37/01228 ,  C03B37/0124 ,  C03B37/01248 ,  C03B37/0126 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01486 ,  C03B2201/10 ,  C03B2203/31 ,  C03B2207/06 ,  C03B2207/14 ,  C03B2207/40 ,  C03C15/00 ,  C03C25/68

    摘要： Disclosed is a method of making a polarization retaining single-mode optical fiber. Longitudinal grooves are formed on opposite sides of a cylindrically-shaped core preform having a glass core (11') surrounded by cladding glass (12'). The core preform is inserted into a glass tube, the tube is shrunk onto the core preform, and the interface between the core preform and the tube (27) is fused to form a solid preform having longitudinal apertures (14') on opposite sides of the core. An etchant gas is flowed through the apertures to enlarge the apertures into holes having a substantially round cross-section. Inserted into each aperture is a stress rod formed of glass having a coefficient of expansion different from that of the cladding glass. The resultant draw blank is drawn to form a single-mode optical fiber having a core that is subjected to a stress-induced birefringence.

    摘要翻译： 公开了一种制造偏振保持单模光纤的方法。 纵向槽形成在具有由包层玻璃包围的玻璃芯的圆柱形芯预制件的相对侧上。 将芯预制件插入玻璃管中，将管收缩到芯预制件上，并将芯预制件和管之间的界面熔合以形成在芯的相对侧上具有纵向孔的实心预制件。 蚀刻剂气体流过孔径，以将孔径扩大为具有基本圆形横截面的孔。 插入到每个孔中的是由玻璃形成的应力杆，膨胀系数与包层玻璃的膨胀系数不同。 拉制所得到的拉丝坯以形成具有经受应力诱导双折射的芯的单模光纤。