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1. 发明授权

US06768849B2 Systems and methods for fabricating varying waveguide optical fiber device 有权
标题翻译：制造不同波导光纤器件的系统和方法
公开(公告)号：US06768849B2
公开(公告)日：2004-07-27
申请号：US10190134
申请日：2002-07-03
申请人： David John DiGiovanni , Andrew D. Yablon , Man Fei Yan
发明人： David John DiGiovanni , Andrew D. Yablon , Man Fei Yan
IPC分类号： G02B602
CPC分类号： G02B6/02123 , C03B37/027 , C03B37/15 , C03B2201/02 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2203/22 , C03B2203/222 , C03B2205/40 , G02B6/02 , G02B6/02071 , G02B6/2551 , G02B6/2552
摘要： Systems and methods are described for fabricating a varying-waveguide optical fiber. In one described method, a preform is fabricated having a core and at least one cladding region. The cladding region has a higher viscosity and the core region has a lower viscosity. The relative viscosities of the cladding region and core are chosen such that, when tension is applied to an optical fiber drawn from the preform, the applied tension is primarily borne by the cladding region thereby causing a viscoelastic strain to be frozen into the cladding region, while creating a minimal viscoelastic strain in the core. The method further includes drawing the preform into an optical fiber under an applied tension, such that a viscoelastic strain is frozen into the cladding region the frozen-in viscoelastic strain decreasing the cladding region refractive index. The cladding region refractive index is changed in a section of the optical fiber by heating the section so as to relax the viscoelastic strain frozen into the cladding region in the section of fiber, thereby increasing the cladding region refractive index in the section of fiber.
摘要翻译：描述了制造变波导光纤的系统和方法。在一种所描述的方法中，制造具有芯和至少一个包层区的预成型件。包层区域具有较高的粘度，并且核心区域具有较低的粘度。选择包层区域和芯体的相对粘度，使得当对从预成型体拉出的光纤施加张力时，施加的张力主要由包层区域承担，从而使粘弹性应变冻结在包层区域中，同时在核心中产生最小的粘弹性应变。该方法还包括在施加的张力下将预型件拉伸成光纤，使得粘弹性应变被冻结到包层区域中，使冷冻的粘弹性应变降低包层区折射率。通过加热该部分使包层区折射率变化，使得在纤维截面中冻结到包层区域的粘弹性应变松弛，从而增加纤维截面中的包层区折射率。

2. 发明授权

US5868815A Method of making an optical fiber by blowing on a preform tube to enhance collapse 失效
标题翻译：通过吹塑在预制管上以增强塌陷来制造光纤的方法
公开(公告)号：US5868815A
公开(公告)日：1999-02-09
申请号：US803476
申请日：1997-02-20
申请人： David John DiGiovanni , Steven Alan Jacobs , Man Fei Yan
发明人： David John DiGiovanni , Steven Alan Jacobs , Man Fei Yan
IPC分类号： G02B6/00 , C03B37/012 , C03B37/018 , C03B37/07
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：本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。

3. 发明授权

US06826341B2 Systems and methods for reducing splice loss in optical fibers 有权
公开(公告)号：US06826341B2
公开(公告)日：2004-11-30
申请号：US10287307
申请日：2002-11-04
申请人： David John DiGiovanni , Peter Mikal Holmblad , Torben E. Veng , Andrew D. Yablon
发明人： David John DiGiovanni , Peter Mikal Holmblad , Torben E. Veng , Andrew D. Yablon
IPC分类号： G02B602
CPC分类号： G02B6/03644 , C03B37/01413 , C03B37/01807 , C03B37/027 , C03B2201/10 , C03B2201/28 , C03B2203/22 , C03B2203/222 , C03B2203/36 , C03B2205/40 , G02B6/03666 , G02B6/03694 , G02B6/2551
摘要： Optical fibers are described that exhibit reduced splice loss. Further described are techniques for fabricating optical fibers exhibiting reduced splice loss. One described fiber includes a plurality of regions, one region having a higher viscosity and the other region having a lower viscosity, such that when the fiber is drawn under tension, a strain is frozen into the higher viscosity region. A lower viscosity buffer layer is sandwiched between the higher viscosity region and the lower viscosity region. The buffer layer isolates the lower viscosity region from changes in refractive index in the higher viscosity region arising from a change in the strain frozen into the higher viscosity region.

4. 发明授权

US08515231B2 Method of making an optical fiber with trench region in its index profile 有权
标题翻译：在其折射率分布图中制造具有沟槽区域的光纤的方法
公开(公告)号：US08515231B2
公开(公告)日：2013-08-20
申请号：US13605038
申请日：2012-09-06
申请人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
发明人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
IPC分类号： G02B6/02
CPC分类号： C03B37/018 , C03B37/01211 , C03B37/01807 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/02342 , G02B6/03672 , G02B6/03677 , G02B6/03683 , G02B6/03688 , G02B6/14 , Y02P40/57
摘要： Described is a method of fabricating an optical fiber preform that includes a deep index trench comprising a shallower outer trench portion formed on a substrate tube and a deeper inner trench portion formed on the shallower outer trench portion. Each of the shallower outer trench and deeper inner trench portions comprises multiple silica layers. The method comprises the steps of: (1) forming each layer of the shallower outer trench portion in a single-pass deposition of a F-containing silica layer; and (2) forming each layer of the deeper inner portion in a double-pass deposition in which, in a first pass, a layer of silica soot is deposited and then, in a second pass, the soot is sintered in the presence of SiF4.
摘要翻译：描述了一种制造光纤预制棒的方法，其包括深度折射率沟槽，该深度折射率沟槽包括形成在衬底管上的较浅的外部沟槽部分和形成在较浅的外部沟槽部分上的较深的内部沟槽部分。较浅的外沟槽和较深的内沟槽部分中的每一个包括多个二氧化硅层。该方法包括以下步骤：（1）在含F的二氧化硅层的单程沉积中形成较浅的外沟槽部分的各层; 和（2）在双遍沉积中形成更深的内部部分的每个层，其中在第一次通过中沉积二氧化硅烟炱层，然后在第二次通过中，在SiF 4存在下烧结烟炱。

5. 发明授权

US07787733B2 Optical fiber configuration for dissipating stray light 有权
公开(公告)号：US07787733B2
公开(公告)日：2010-08-31
申请号：US12231967
申请日：2008-09-08
申请人： David John DiGiovanni , Yoshihiro Emori , Michael Fishteyn , Clifford Headley
发明人： David John DiGiovanni , Yoshihiro Emori , Michael Fishteyn , Clifford Headley
IPC分类号： G02B6/02 , G02B6/26
CPC分类号： G02B6/2804 , G02B6/02395 , G02B6/0365
摘要： An optical transmission fiber is formed to include a relatively low-index, relatively thin outer cladding layer disposed underneath the protective polymer outer coating. Stray light propagating along an inner cladding layer(s) within the fiber will be refracted into the thin outer cladding (by proper selection of refractive index values). The thin dimension of the outer cladding layer allows for the stray light to “leak” into the outer coating in a controlled, gradual manner so as to minimize heating of the coating associated with the presence of stray light. The inventive fiber may also be bent to assist in the movement of stray light into the coating.

6. 发明申请

US20090067795A1 Optical fiber configuration for dissipating stray light 有权
标题翻译：用于消散杂散光的光纤配置
公开(公告)号：US20090067795A1
公开(公告)日：2009-03-12
申请号：US12231967
申请日：2008-09-08
申请人： David John DiGiovanni , Yoshihiro Emori , Michael Fishteyn , Clifford Headley
发明人： David John DiGiovanni , Yoshihiro Emori , Michael Fishteyn , Clifford Headley
IPC分类号： G02B6/02
CPC分类号： G02B6/2804 , G02B6/02395 , G02B6/0365
摘要： An optical transmission fiber is formed to include a relatively low-index, relatively thin outer cladding layer disposed underneath the protective polymer outer coating. Stray light propagating along an inner cladding layer(s) within the fiber will be refracted into the thin outer cladding (by proper selection of refractive index values). The thin dimension of the outer cladding layer allows for the stray light to “leak” into the outer coating in a controlled, gradual manner so as to minimize heating of the coating associated with the presence of stray light. The inventive fiber may also be bent to assist in the movement of stray light into the coating.
摘要翻译：光传输光纤被形成为包括设置在保护性聚合物外涂层下方的相对较低折射率的较薄的外包层。沿着纤维内的内包层传播的杂散光将被折射入薄的外包层（通过适当地选择折射率值）。外包层的薄的尺寸允许杂散光以受控的逐渐的方式“泄漏”到外涂层中，以便最小化与杂散光的存在相关联的涂层的加热。本发明的纤维也可以被弯曲以帮助杂散光移动到涂层中。

7. 发明授权

US06587625B1 Optical fiber apparatus for high-radiation environments 失效
标题翻译：用于高辐射环境的光纤设备
公开(公告)号：US06587625B1
公开(公告)日：2003-07-01
申请号：US09504554
申请日：2000-02-15
申请人： Joseph A. Abate , Robert George Ahrens , David John DiGiovanni , Michael James LuValle , Herman Melvin Presby , Robert Scott Windeler
发明人： Joseph A. Abate , Robert George Ahrens , David John DiGiovanni , Michael James LuValle , Herman Melvin Presby , Robert Scott Windeler
IPC分类号： G02B602
CPC分类号： G21C17/116 , G02B6/02 , G02B6/4459 , G02B6/4492
摘要： Applicants have discovered an apparatus and method effective for use in rendering an optical fiber resistant to losses caused by high-radiation environments such as in outerspace. The apparatus comprises an optical fiber, a housing surrounding the optical fiber defining an enclosed space between the exterior surface of the fiber and the housing, and a concentration of deuterium or hydrogen gases disposed within the enclosed space.
摘要翻译：申请人已经发现了一种有效用于渲染光纤的装置和方法，该抗光纤能够抵抗诸如外部空间的高辐射环境造成的损耗。该设备包括光纤，围绕光纤的壳体，其限定纤维的外表面和壳体之间的封闭空间，以及设置在封闭空间内的浓度的氘或氢气。

8. 发明授权

US06542679B2 Method of making an improved multimode optical fiber and fiber made by method 有权
公开(公告)号：US06542679B2
公开(公告)日：2003-04-01
申请号：US09847034
申请日：2001-05-01
申请人： David John DiGiovanni , Steven Eugene Golowich , Sean L. Jones , William Alfred Reed
发明人： David John DiGiovanni , Steven Eugene Golowich , Sean L. Jones , William Alfred Reed
IPC分类号： G02B602
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.

9. 发明授权

US06381045B1 Method and apparatus for bidirectional communication over a single optical fiber 失效
标题翻译：用于单个光纤上的双向通信的方法和装置
公开(公告)号：US06381045B1
公开(公告)日：2002-04-30
申请号：US09103925
申请日：1998-06-24
申请人： David John DiGiovanni , Bernard Raymond Eichenbaum , Mujibun Nisa Khan
发明人： David John DiGiovanni , Bernard Raymond Eichenbaum , Mujibun Nisa Khan
IPC分类号： H04J1402
CPC分类号： H04B10/2503
摘要： Dual concentric core fiber is used for optical communication. Inbound messages lying in a first wavelength channel are received from a terminal portion of the fiber, and outbound messages lying in a second such channel are injected into the terminal portion. The optical fiber has at least one annular portion surrounding a central core portion. The inbound messages are received from the annular portion, and the outbound messages are injected into the central core portion. Alternatively, the inbound messages are received from the central core portion, and the outbound messages are injected into the annular portion.
摘要翻译：双同心芯光纤用于光通信。从光纤的终端接收位于第一波长信道中的入站消息，并且位于第二个这样的信道中的出站消息被注入到终端部分中。光纤具有围绕中央芯部的至少一个环形部分。从环形部分接收入站消息，并将出站消息注入中心核心部分。或者，从中心核心部分接收入站消息，并且将出站消息注入到环形部分中。

10. 发明授权

US06363194B1 Optical fiber communication system employing Nd doped fiber amplifier for the 1400 nm window 有权
标题翻译：用于1400nm窗口的采用Nd掺杂光纤放大器的光纤通信系统
公开(公告)号：US06363194B1
公开(公告)日：2002-03-26
申请号：US09288201
申请日：1999-04-08
申请人： David John DiGiovanni , Karsten Rottwitt
发明人： David John DiGiovanni , Karsten Rottwitt
IPC分类号： G02B602
CPC分类号： H01S3/06708 , H01S3/06729 , H01S3/1611 , H01S3/1698 , H01S2301/04 , H01S2302/00 , H01S2303/00
摘要： In accordance with the invention, an optical fiber communication system comprises one or more Nd doped fiber amplifiers for amplified transmission in the 1400 nm window. The amplifier is designed with a combination of waveguide effects and selective absorption to reduce amplified spontaneous emission to acceptable levels.
摘要翻译：根据本发明，光纤通信系统包括在1400nm窗口中用于放大传输的一个或多个Nd掺杂光纤放大器。放大器设计有波导效应和选择性吸收的组合，以将放大的自发辐射减少到可接受的水平。

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