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61. 发明授权

US06597848B1 Dispersion compensating fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US06597848B1
公开(公告)日：2003-07-22
申请号：US09558649
申请日：2000-04-26
申请人： George E. Berkey , Lei Jiang , Dale R. Powers , V. Srikant
发明人： George E. Berkey , Lei Jiang , Dale R. Powers , V. Srikant
IPC分类号： G02B618
CPC分类号： G02B6/03688 , C03B37/01413 , C03B37/01446 , C03B2201/12 , C03B2201/31 , C03B2203/22 , C03B2203/23 , C03B2203/26 , C03B2203/36 , C03B2207/36 , G02B6/02261 , G02B6/03677
摘要： Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index nCL. The core includes at least three radially adjacent regions, a central core region, a moat region having a refractive index nM that is sufficiently lower than nCL such that &Dgr;M≦−0.4%, and a ring region. As the ring region exhibits sufficiently high refractive index at a sufficiently long distance from the outer edge of the moat region, the fiber can exhibit low values of negative dispersion slope at low values of negative dispersion and yet exhibit good bending loss. This ring region is also capable of imparting to the fiber a relatively high cutoff wavelength, so that the present invention is particularly well suited for use in L-band systems. A particularly suitable fiber has an index profile in which that part of the ring region at the transition between the moat and the ring region has a refractive index such that its delta value is close to zero. Also disclosed is a method of forming the fiber of the present invention.
摘要翻译：公开了一种色散补偿光纤，其包括由折射率nCL的包覆层包围的芯。芯包括至少三个径向相邻的区域，中心芯区域，具有足够低于nCL的折射率nM的护城河区域，使得DELTAM <= -0.4％，以及环形区域。由于环形区域在距离护城河区域的外边缘足够长的距离处呈现足够高的折射率，所以在低分散负值下，纤维可以表现出低的负色散斜率值，并表现出良好的弯曲损耗。该环形区域还能够赋予纤维相当高的截止波长，使得本发明特别适用于L波段系统。特别合适的纤维具有折射率分布，其中在护环和环区之间的转变处的环区的那部分具有折射率使得其δ值接近于零。还公开了形成本发明的纤维的方法。

62. 发明授权

US06539154B1 Non-constant dispersion managed fiber 失效
标题翻译：非恒定色散管理光纤
公开(公告)号：US06539154B1
公开(公告)日：2003-03-25
申请号：US09691388
申请日：2000-10-18
申请人： George E. Berkey , Dana C. Bookbinder , Alan F. Evans , Daniel W. Hawtof , John M. Lotz
发明人： George E. Berkey , Dana C. Bookbinder , Alan F. Evans , Daniel W. Hawtof , John M. Lotz
IPC分类号： G02B602
CPC分类号： G02B6/02247 , C03B37/01225 , C03B37/01228 , C03B37/0124 , C03B37/0253 , C03B37/02718 , C03B37/15 , C03B2203/06 , C03B2203/18 , C03B2203/19 , C03B2203/36 , C03B2205/20 , C03B2205/40 , C03B2205/56 , C03C25/002 , C03C25/6208 , G02B6/02066 , G02B6/29376
摘要： An improved telecommunications link is provided which includes a dispersion managed fiber with smoothly varying dispersion. The dispersion map may vary sinusoidally or as a sawtooth, for example. The smoothly varying dispersion works well for high data rate transmissions in a return to zero signal format. The dispersion managed fiber with smoothly varying dispersion may be formed by a wide variety of techniques. A method of forming dispersion managed fiber by localized heating or cooling is also provided.
摘要翻译：提供了一种改进的电信链路，其包括具有平滑变化的色散的色散管理光纤。例如，色散图可以正弦变化或锯齿变化。平滑变化的色散在返回零信号格式的高数据速率传输中工作良好。可以通过多种技术形成具有平滑变化的色散的色散管理光纤。还提供了通过局部加热或冷却形成分散管理纤维的方法。

63. 发明授权

US06477305B1 Low water peak optical waveguide and method of manufacturing same 有权
标题翻译：低水峰光波导及其制造方法
公开(公告)号：US06477305B1
公开(公告)日：2002-11-05
申请号：US09547598
申请日：2000-04-11
申请人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Cynthia B. Giroux , Daniel W. Hawtof , Dale R. Powers , V. Srikant
发明人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Cynthia B. Giroux , Daniel W. Hawtof , Dale R. Powers , V. Srikant
IPC分类号： G02B602
CPC分类号： C03B37/01486 , C03B37/0124 , C03B37/01446 , C03B37/01473 , C03B2201/04 , C03B2201/075 , C03B2201/22 , C03B2201/31 , C03C3/06 , C03C13/047 , C03C2201/22 , C03C2203/54 , G02B6/02
摘要： A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km at a measured wavelength of 1380 nm. A low water content plug used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.
摘要翻译：公开了一种具有低含水率中心线区域的圆柱形玻璃体及其制造用于制造光波导纤维的圆柱形玻璃体的方法。圆柱形玻璃体的中心线区域的水含量足够低，使得由本发明的圆柱形玻璃体制成的光波导纤维的光衰减小于约0.35dB / km，优选小于约0.31dB / km，测量波长为1380 nm。还公开了用于制造这种圆柱形玻璃体的低含水量塞子，具有低水峰的光波导纤维和包含这种光波导纤维的光纤通信系统。

64. 发明授权

US06429963B1 Distributed resonant ring fiber filter 失效
标题翻译：分布式谐振环形滤波器
公开(公告)号：US06429963B1
公开(公告)日：2002-08-06
申请号：US09723793
申请日：2000-11-28
申请人： George E. Berkey , Liang Dong
发明人： George E. Berkey , Liang Dong
IPC分类号： G02B626
CPC分类号： G02B6/03605 , G02B6/02052 , G02B6/03611 , G02B6/03644 , G02B6/29338 , G02B6/29343 , G02B6/29344 , H01S3/06708 , H01S3/06754 , H01S2301/04
摘要： Disclosed is a fiber optic filter that includes a central core, a ring core concentric with the central core, an inner cladding region of refractive index ni between the central and ring cores, and a cladding layer of refractive index nc surrounding the ring core. The maximum refractive index n1 of the central core and the maximum refractive index n2 of the ring core are greater than nc and ni. The propagation constants of one core mode and one ring mode are different at wavelengths except for at least one wavelength &lgr;0 whereby power transfers between the two cores at &lgr;0. At least a portion of the fiber optic filter fiber is wound around a reel to subject it to a continuous curvature, the radius of which determines the amplitude of the attenuation. Such fibers are useful in fiber amplifiers in which the central core contains active dopant ions.
摘要翻译：公开了一种光纤过滤器，其包括中心芯，与中心芯同心的环芯，在中心环和环芯之间具有折射率为ni的内包层区域，以及包围环芯的折射率nc包层。中心纤芯的最大折射率n1和环芯的最大折射率n2大于nc和ni。一个核心模式和一个环模式的传播常数在除了至少一个波长lambd0之外的波长处是不同的，从而在lambd0处的两个核之间的功率传输。纤维光纤过滤纤维的至少一部分缠绕在卷轴上以使其经受连续的曲率，其半径决定了衰减的幅度。这种纤维在纤维放大器中是有用的，其中心芯包含活性掺杂离子。

65. 发明授权

US06421489B1 Waveguide profile for large effective area 失效
标题翻译：波导形状大面积有效
公开(公告)号：US06421489B1
公开(公告)日：2002-07-16
申请号：US09530018
申请日：2000-04-21
申请人： George E. Berkey , Yanming Liu
发明人： George E. Berkey , Yanming Liu
IPC分类号： G02B602
CPC分类号： G02B6/03627 , G02B6/02019 , G02B6/02238 , G02B6/0228 , G02B6/0281 , G02B6/0283 , G02B6/03611
摘要： Disclosed is a single mode optical waveguide fiber having a segmented core design. The core may have two or more segments. The highest refractive index portion of the core is spaced apart from the centerline of the waveguide fiber. The relative index of the first or center segment of the core is negative, where the reference refractive index is taken to be the minimum index clad. This family of core profiles provides effective areas in the range of 110 &mgr;m2 to 150 &mgr;m2 in the operating window around 1550 nm.
摘要翻译：公开了具有分段核设计的单模光纤。核心可以具有两个或更多个段。芯的最高折射率部分与波导纤维的中心线间隔开。芯的第一或中心部分的相对折射率为负，其中参考折射率被认为是最小折射率包层。这个核心轮廓系列在1550nm左右的操作窗口中提供了在110m2到150mum2范围内的有效面积。

66. 发明授权

US06233387B1 Broadband pulse-reshaping optical fiber 有权
标题翻译：宽带脉冲整形光纤
公开(公告)号：US06233387B1
公开(公告)日：2001-05-15
申请号：US09436017
申请日：1999-11-09
申请人： George E. Berkey , Alan F. Evans , V. Srikant
发明人： George E. Berkey , Alan F. Evans , V. Srikant
IPC分类号： G02B602
CPC分类号： G02B6/02028 , G02B6/02009 , G02B6/02242 , G02B6/02271 , G02B6/0286 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： A pulse-reshaping optical fiber having a core with refractive index nc surrounded by a cladding layer, the diameter of the core changing monotonically along the length of the fiber. The core includes a central region having a maximum refractive index n1 and a moat region disposed radially adjacent to the central region. The moat region has a minimum refractive index n2 which is sufficiently low that the index delta &Dgr;2 of the moat region with respect to nc is not greater than −0.1%. The moat region affects the change in dispersion with respect to fiber cladding diameter, as well as providing the pulse-reshaping fiber with low dispersion versus wavelength slope. The pulse-reshaping fiber is particularly useful in association with optical transmission systems where high transmission rates and narrow pulse widths are desired, including components such as high pulse rate wavelength-division-multiplexers (WDMs) and optical regenerators.
摘要翻译：具有折射率为nc的芯的脉冲整形光纤被包层围绕，芯的直径沿光纤的长度单调变化。芯包括具有最大折射率n1的中心区域和径向相邻于中心区域设置的护城河区域。护城河区域具有足够低的最小折射率n2，使得护城河区域的相对于nc的折射率ΔDELTA2不大于-0.1％。护环区域影响相对于纤维包层直径的色散变化，以及提供具有低色散对波长斜率的脉冲整形光纤。脉冲整形光纤特别适用于需要高传输速率和窄脉冲宽度的光传输系统，包括诸如高脉冲率波分复用器（WDM）和光学再生器的组件。

67. 发明授权

US05999679A Dispersion compensating single mode waveguide 失效
标题翻译：色散补偿单模波导
公开(公告)号：US05999679A
公开(公告)日：1999-12-07
申请号：US973794
申请日：1997-12-10
申请人： A. Joseph Antos , George E. Berkey , Daniel W. Hawtof , G. Thomas Holmes , Yanming Liu
发明人： A. Joseph Antos , George E. Berkey , Daniel W. Hawtof , G. Thomas Holmes , Yanming Liu
IPC分类号： G02B6/036 , G02B6/22
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/0228 , G02B6/03644 , G02B6/03661 , G02B6/03666 , G02B6/0286 , Y10S359/90
摘要： A dispersion compensating single mode optical waveguide fiber designed to change the wavelength window of operation of a link from 1301 nm to 1550 nm. The dispersion compensating waveguide fiber is characterized by a core glass region refractive index profile comprised of at least three segments. The segment on the waveguide center has a positive relative refractive index. At least one segment spaced apart from the waveguide centerline has a negative refractive index.
摘要翻译： PCT No.PCT / US97 / 12136 Sec。 371 1997年12月10日第 102（e）日期1997年12月10日PCT提交1997年7月14日PCT公布。公开号WO98 / 04941 日期1998年2月5日一种用于改变从1310nm到1550nm的链路的工作波长窗口的色散补偿单模光纤。色散补偿波导纤维的特征在于由至少三个片段组成的芯玻璃区域折射率分布。波导中心的区段具有正的相对折射率。与波导中心线间隔开的至少一个段具有负折射率。

68. 发明授权

US5405474A Environmentally robust fiber optic coupler and method 失效
标题翻译：环保的光纤耦合器和方法
公开(公告)号：US5405474A
公开(公告)日：1995-04-11
申请号：US77793
申请日：1993-06-15
申请人： George E. Berkey , William J. Miller
发明人： George E. Berkey , William J. Miller
IPC分类号： G02B6/28 , B32B31/00
CPC分类号： G02B6/2835 , G02B6/2856 , Y10T156/1052 , Y10T156/108
摘要： A fiber optic coupler is formed by inserting a plurality of optical fibers into the longitudinal bore of a glass tube so that at least a portion of each fiber extends from at least one end of the tube. The midregion of the tube is collapsed onto the fibers, uncollapsed bore portions remaining at the tube end regions. Each bore portion is connected to the tube end surface by a funnel that facilitates the fiber insertion step. The central portion of the midregion is stretched to reduce the diameter thereof. In a first embodiment, glue is applied to the funnel. Before the glue is cured, a sufficient period of time is allowed to elapse to permit said glue to flow by capillary action between the fibers and the adjacent portion of the wall of the bore portion. The glue flows at least 3 mm into the bore portion beyond the bottom of the funnel. The glue that flows by capillary action fails to completely surround the fibers with glue. The glue is then cured. In a second embodiment, a hollow filament is inserted into the uncollapsed bore portion and a vacuum is applied to the filament. Glue, which is applied to the funnel, is drawn into the uncollapsed bore portion due to the evacuated condition thereof, thus filling the uncollapsed bore portion to the desired level.
摘要翻译：通过将多根光纤插入玻璃管的纵向孔中而形成光纤耦合器，使得每条光纤的至少一部分从管的至少一端延伸。管的中间区域被折叠到纤维上，未封闭的孔部分保留在管端区域。每个孔部分通过有助于纤维插入步骤的漏斗连接到管端表面。中间区域的中心部分被拉伸以减小直径。在第一实施例中，将胶水施加到漏斗。在胶固化之前，允许经过足够的时间以允许所述胶通过毛细作用在纤维与孔部分的壁的相邻部分之间流动。胶水至少3mm流入漏斗底部以上的孔部分。通过毛细作用流动的胶水不能完全用胶水包围纤维。然后将胶固化。在第二实施例中，将中空细丝插入到未收缩的孔部分中，并将真空施加到细丝上。应用于漏斗的胶水由于其抽空状态而被吸入未收缩的孔部分，从而将未收缩的孔部分填充到所需的水平。

69. 发明授权

US5236481A Method of doping porous glass preforms 失效
标题翻译：抛光多孔玻璃预制件的方法
公开(公告)号：US5236481A
公开(公告)日：1993-08-17
申请号：US839915
申请日：1992-02-21
申请人： George E. Berkey
发明人： George E. Berkey
IPC分类号： C03B37/014
CPC分类号： C03B37/01446 , C03B2201/30 , C03B2201/32 , C03B2201/34 , C03B2201/36 , C03B2201/40 , C03B2201/54
摘要： Disclosed is a method of forming a doped glass article. Heated glass particles are deposited on a mandrel where they adhere together to form a porous glass preform having interconnective pores. The mandrel is removed to form a tubular preform having an axial aperture. The preform is suspended in a consolidation furnace by a gas conducting handle having a dopant containing chamber. As the handle and preform are heated, there is flowed through the chamber a gas that reacts with the heated dopant to form a reactant gas that flows into the aperture and into pores, whereby a dopant is incorporated into the porous glass preform. The doped preform is heat treated to consolidate it into an elongated non-porous glass body containing the dopant. The glass body can be provided with cladding glass and drawn into an optical fiber.

70. 发明授权

US5152818A Method of making polarization retaining fiber 失效
标题翻译：制造极化保持纤维的方法
公开(公告)号：US5152818A
公开(公告)日：1992-10-06
申请号：US612103
申请日：1990-11-09
申请人： George E. Berkey , Venkata A. Bhagavatula , Robert M. Hawk , Steven H. Tarcza
发明人： George E. Berkey , Venkata A. Bhagavatula , Robert M. Hawk , Steven H. Tarcza
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , C03B37/02 , C03C15/00 , C03C25/68 , G02B6/024
CPC分类号： C03B37/01234 , C03B37/01217 , C03B37/01228 , C03B37/0124 , C03B37/01248 , C03B37/0126 , C03B37/01413 , C03B37/01446 , C03B37/01486 , C03C15/00 , C03C25/68 , C03B2201/10 , C03B2203/31 , C03B2207/06 , C03B2207/14 , C03B2207/40
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 perform having a glass core surrounded by cladding glass. 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 is fused to form a solid preform having longitudinal apertures 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.

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