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1. 发明授权

US06912342B2 Optical fiber module having reduced multi-path interference 失效
标题翻译：光纤模块具有减少的多径干扰
公开(公告)号：US06912342B2
公开(公告)日：2005-06-28
申请号：US10328553
申请日：2002-12-19
申请人： David P. Machewirth , Eric J. Mozdy , Rachel S. Mozdy , Daniel A. Nolan , V Srikant , Sergey Y. Ten
发明人： David P. Machewirth , Eric J. Mozdy , Rachel S. Mozdy , Daniel A. Nolan , V Srikant , Sergey Y. Ten
IPC分类号： G02B6/14 , G02B6/34 , G02B6/26
CPC分类号： G02B6/29376 , G02B6/14 , H01S3/06704 , H01S3/06754 , H01S3/08045 , H01S2301/02
摘要： Disclosed is a fiber optic module containing one or more optical fibers having an attenuator formed in the output end of the fibers to filter out unwanted higher order modes. The optical fibers are typically gain fibers or dispersion compensating fibers, and the attenuator consists of a coil, or a series of bends, of sufficient number and bend radius that higher order modes are reduced below a desired level.
摘要翻译：公开了一种光纤模块，其包含一根或多根光纤，该光纤具有形成在光纤的输出端的衰减器，以过滤不想要的高阶模式。光纤通常是增益光纤或色散补偿光纤，并且衰减器由具有足够数量和弯曲半径的线圈或一系列弯曲部组成，高阶模式被降低到期望的水平以下。

2. 发明授权

US06731848B2 Dispersion compensating optical fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US06731848B2
公开(公告)日：2004-05-04
申请号：US10366915
申请日：2003-02-14
申请人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
发明人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
IPC分类号： G02B622
CPC分类号： G02B6/03677 , G02B6/02261 , G02B6/0228 , G02B6/0286 , G02B6/03611 , G02B6/03644
摘要： Disclosed is a dispersion compensating optical fiber that includes a refractive index profile selected to provide dispersion at 1550 nm of between −90 and −150 ps/nm/km; dispersion slope at 1550 nm of less than −1.5 ps/nm2/km; and kappa of between 40 and 95. The profile preferably has a core surrounded by a cladding layer of refractive index &Dgr;c, and at least three radially adjacent regions including a central core region having &Dgr;1, a moat region having a refractive index &Dgr;2, and an annular ring region having a refractive index &Dgr;3, wherein &Dgr;1>&Dgr;3>&Dgr;c>&Dgr;2.
摘要翻译：公开了一种色散补偿光纤，其包括折射率分布，其选择为在-90至-150ps / nm / km之间的1550nm处提供色散; 1550nm处的色散斜率小于-1.5ps / nm 2 / km; 和κ为40至95之间。轮廓优选具有由折射率Deltac的包覆层围绕的芯和至少三个径向相邻的区域，包括具有Delta1的中心芯区域，具有折射率Delta2的护城河区域，以及具有折射率Delta3的环形环区域，其中Delta1> Delta3> Deltac> Delta2。

3. 发明授权

US06705127B1 Methods of manufacturing soot for optical fiber preforms and preforms made by the methods 失效
标题翻译：通过这些方法制造的光纤预制棒和预成型件的烟灰的制造方法
公开(公告)号：US06705127B1
公开(公告)日：2004-03-16
申请号：US09787064
申请日：2001-03-12
申请人： Michael B. Cain , Daniel W. Hawtof , V. Srikant
发明人： Michael B. Cain , Daniel W. Hawtof , V. Srikant
IPC分类号： C03B37018
CPC分类号： C03B37/01413 , C03B37/0142 , C03B2201/30 , C03B2201/32 , C03B2201/34 , C03B2201/36 , C03B2201/40 , C03B2201/50 , C03B2201/54 , C03B2207/32 , C03B2207/34 , C03B2207/52
摘要： The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous soot stream containing the oxides of the selected elements contained within the non-aqueous liquid reactant and the aqueous solution. The resulting multi-component soot is collected by conventional methods to form preforms used in the manufacture of optical waveguide fibers. Preforms formed by the methods are also disclosed.
摘要翻译：本发明涉及生产用于制造光波导的烟灰的方法。非水性液体反应物和含有一种或多种盐的水溶液通过雾化燃烧器组件输送以形成含有非水液体反应物和水溶液中所含选定元素的氧化物的均匀烟灰流。通过常规方法收集所得的多组分烟灰，以形成用于制造光波导纤维的预成型件。还公开了通过该方法形成的预成型件。

4. 发明授权

US06583922B2 Optical amplifier site with reduced noise and transmission system utilizing such 有权
公开(公告)号：US06583922B2
公开(公告)日：2003-06-24
申请号：US10185935
申请日：2002-06-28
申请人： V Srikant , Martin R Williams
发明人： V Srikant , Martin R Williams
IPC分类号： H01S300
CPC分类号： H01S3/302 , H01S3/06758 , H01S3/10015 , H01S2301/02
摘要： An optical amplifier site comprising: (i) a distributed Raman amplifier providing a first signal gain level; (ii) an optical amplifier located downstream from the distributed Raman amplifier, the optical amplifier being indirectly coupled to the distributed Raman amplifier, the optical amplifier including a first amplification medium, providing a second signal gain level; (iii) at least one optical signal loss element located between the distributed Raman amplifier and the optical amplifier and, contributing at least 0.5 dB optical loss to the amplifier site; (iv) a second amplification medium located down-stream from the first amplification medium; and (v) at least another one optical signal loss element, this at least another one optical signal loss element being located between said first amplification medium and said second amplification medium.

5. 发明授权

US06546178B2 Dispersion compensating optical fiber 有权
标题翻译：色散补偿光纤
公开(公告)号：US06546178B2
公开(公告)日：2003-04-08
申请号：US10122250
申请日：2002-04-11
申请人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
发明人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
IPC分类号： G02B622
CPC分类号： G02B6/03677 , G02B6/02261 , G02B6/0228 , G02B6/0286 , G02B6/03611 , G02B6/03644
摘要： Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent regions, a central core region having &Dgr;1, a moat region having a refractive index &Dgr;2 and an annular ring region having a refractive index &Dgr;3, such that &Dgr;1>&Dgr;3>&Dgr;c>&Dgr;2. The fiber exhibits a dispersion at 1550 which is less than −30 ps/nm/km, and a &kgr; value obtained by dividing the dispersion value by the dispersion slope which is between 40 and 100.
摘要翻译：公开了一种色散补偿光纤，其包括由折射率DELTAc的包覆层包围的芯。芯包括至少三个径向相邻的区域，具有DELTA1的中心芯区域，具有折射率DELTA2的护环区域和具有折射率DELTA3的环形环区域，使得DELTA1> DELTA3> DELTA2> DELTA2。纤维在1550处表现出小于-30ps / nm / km的色散，并且通过将色散值除以40和100之间的色散斜率获得的κ值。

6. 发明授权

US06445864B2 Dispersion compensating optical fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US06445864B2
公开(公告)日：2002-09-03
申请号：US09802696
申请日：2001-03-09
申请人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
发明人： Lei Jiang , Gang Qi , V. Srikant , Jeffery S. Stone , Sergey Y. Ten
IPC分类号： G02B602
CPC分类号： G02B6/03677 , G02B6/02261 , G02B6/0228 , G02B6/0286 , G02B6/03611 , G02B6/03644
摘要： Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent regions, a central core region having &Dgr;1, a moat region having a refractive index &Dgr;2 and an annular ring region having a refractive index &Dgr;3, such that &Dgr;1>&Dgr;3>&Dgr;c>&Dgr;2. The fiber exhibits a dispersion slope which is less than −1.0 ps/nm2/km over the wavelength range 1525 to 1565, a dispersion at 1550 which is less than −30 ps/mn/km, and a &kgr; value obtained by dividing the dispersion value by the dispersion slope which is greater than 35 and preferably between 40 and 100.
摘要翻译：公开了一种色散补偿光纤，其包括由折射率DELTAc的包覆层包围的芯。芯包括至少三个径向相邻的区域，具有DELTA1的中心芯区域，具有折射率DELTA2的护环区域和具有折射率DELTA3的环形环区域，使得DELTA1> DELTA3> DELTA2> DELTA2。纤维在1525至1565的波长范围内表现出小于-1.0ps / nm 2 / km的色散斜率，小于-30ps / mn / km的1550的色散和通过将色散通过大于35的色散斜率，优选在40和100之间的值。

7. 发明授权

US07039269B2 Optical transmission line and optical transmission system utilizing same 失效
标题翻译：光传输线路和利用光传输系统的光传输系统
公开(公告)号：US07039269B2
公开(公告)日：2006-05-02
申请号：US10113448
申请日：2002-03-28
申请人： V. Srikant , Sergey Y. Ten , Jan Conradi
发明人： V. Srikant , Sergey Y. Ten , Jan Conradi
IPC分类号： G02B6/28
CPC分类号： H04B10/25253
摘要： An optical signal transmission line includes a first fiber adapted to guide an optical signal therethrough and having a first κ, a second fiber adapted to guide the optical signal therethrough and having a second κ of less than or equal to about 100 nm at a wavelength of 1550 nm, and a κ compensating fiber adapted to guide the optical signal therethrough and having a third κ of greater than or equal to about 60 nm at a wavelength of 1550 nm. The first fiber, the second fiber and the κ compensating fiber are in optical communication, thereby defining an optical transmission line having a total dispersion and a total dispersion slope. The first κ, the second κ and the third κ cooperate such that the total dispersion is within the range of about 1.0 ps/nm-km≧total dispersion≧about −1.0 ps/nm-km at a wavelength of 1550 nm, and the total dispersion slope is within the range of about 0.02 ps/nm2-km≧total dispersion slope≧about −0.02 ps/nm2-km at a wavelength of 1550 nm.
摘要翻译：光信号传输线包括第一光纤，其适于引导光信号通过其中并具有第一卡尔，第二光纤适于通过其引导光信号，并具有小于或等于约100nm的第二卡波长 1550nm，以及适于引导光信号通过其中并具有大于或等于约60nm的第三κ波长的kappa补偿光纤，波长为1550nm。第一光纤，第二光纤和κ补偿光纤是光通信的，由此限定具有总色散和总色散斜率的光传输线。第一个kappa，第二个kappa和第三个kappa协调使总色散在波长1550 nm处的约1.0 ps / nm-km> =总色散> =约-1.0 ps / nm-km的范围内，并且总色散斜率在大约0.02ps / nm 2 -km> =总色散斜率> = -0.02ps / nm 2 -km的范围内在a 波长1550nm。

8. 发明申请

US20050120752A1 Substantially dry, silica-containing soot, fused silica and optical fiber soot preforms, apparatus, methods and burners for manufacturing same 审中-公开
标题翻译：基本干燥的含二氧化硅的烟灰，熔融石英和光纤烟炱预制件，用于制造相同材料的装置，方法和燃烧器
公开(公告)号：US20050120752A1
公开(公告)日：2005-06-09
申请号：US11033001
申请日：2005-01-10
申请人： John Brown , Lisa Chacon , Steven Dawes , V. Srikant , Pushkar Tandon , Joseph Whalen
发明人： John Brown , Lisa Chacon , Steven Dawes , V. Srikant , Pushkar Tandon , Joseph Whalen
IPC分类号： C03B19/14 , C03B37/012 , C03B37/014 , C03B37/018
CPC分类号： C03C3/06 , C03B19/1407 , C03B19/1415 , C03B19/1423 , C03B19/1453 , C03B37/01202 , C03B37/01406 , C03B37/01413 , C03B37/0142 , C03B37/0146 , C03B2201/12 , C03B2203/22 , C03B2207/02 , C03B2207/06 , C03B2207/08 , C03B2207/14 , C03B2207/20 , C03B2207/30 , C03B2207/42 , C03B2207/70 , C03B2207/81
摘要： Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water from the transport process, or combinations thereof. In a first embodiment, substantially water-free soot, preforms or glass are achieved by using a hydrogen-free fuel, such as carbon monoxide, in the deposition process. In another embodiment, a soot producing burner has parameters that enable operation on a substantially hydrogen-free fuel. End burners, which minimize water production, are also described. Such water-free methods are useful in depositing fluorine-doped soot because of the low water present and the efficiency in which fluorine is incorporated. In another embodiment, glassy barrier layer methods and apparatus are described for minimizing dopant migration, especially fluorine. Laser and induction methods and apparatus for forming the barrier layer are depicted. A chlorine, fluorine and silica precursor, such as chlorofluorosilane, may be utilized to form fluorinated soot. Other methods and apparatus are directed to combinations of conventional and substantially water-free processes. One embodiment is directed to combustion enhancing additives for addition to the substantially hydrogen-free fuels. The methods and apparatus in accordance with the invention are particularly useful for producing photomask substrates and optical fiber preforms.
摘要翻译：用于生产基本上无水的二氧化硅烟灰，预成型件和玻璃的方法，装置和前体。该方法和装置通过除去水作为反应产物，从大气中除去水分，从运输过程中除去水或其组合，从而使基本上无水的熔融二氧化硅预制件或玻璃。在第一实施方案中，在沉积工艺中通过使用无氢燃料如一氧化碳来实现基本上无水的烟灰，预型体或玻璃。在另一个实施方案中，产生烟灰的燃烧器具有能够在基本上无氢燃料上操作的参数。还描述了最小化水的生产的终端燃烧器。这种无水方法由于存在低的水和掺入氟的效率而用于沉积氟掺杂烟灰。在另一个实施例中，描述了用于最小化掺杂剂迁移，特别是氟的玻璃状阻挡层方法和装置。描述了用于形成阻挡层的激光和感应方法和装置。可以使用氯，氟和二氧化硅前体，例如氯氟硅烷来形成氟化烟灰。其它方法和装置涉及常规和基本无水方法的组合。一个实施方案涉及用于加入基本上无氢燃料的燃烧增强添加剂。根据本发明的方法和装置特别适用于制造光掩模基片和光纤预制棒。

9. 发明授权

US06701052B2 Dispersion slope compensating optical waveguide fiber 有权
标题翻译：色散斜率补偿光波导光纤
公开(公告)号：US06701052B2
公开(公告)日：2004-03-02
申请号：US09822168
申请日：2001-03-30
申请人： George E. Berkey , Scott R. Bickham , Michael B. Cain , Pamela A. Hajcak , Upendra H. Manyam , Snigdharaj K. Mishra , V. Srikant
发明人： George E. Berkey , Scott R. Bickham , Michael B. Cain , Pamela A. Hajcak , Upendra H. Manyam , Snigdharaj K. Mishra , V. Srikant
IPC分类号： G02B602
CPC分类号： G02B6/02004 , G02B6/02261 , G02B6/0228 , G02B6/0286 , G02B6/03677 , G02B6/03688
摘要： Disclosed is a dispersion compensating and dispersion slope compensating single mode optical waveguide fiber. The refractive index profiles of waveguide fibers in accord with the invention are disclosed and described. These index profiles provide a waveguide fiber having negative total dispersion and negative total dispersion slope so that a standard waveguide fiber is compensated over an extended wavelength range. A telecommunications link using the fiber in accord with the invention is also disclosed and described. A standard fiber to compensating fiber length ratio in the range of 1:1 to 3:1 is shown to give optimum link performance with respect to limiting non-linear dispersion effects.
摘要翻译：公开了一种色散补偿和色散斜率补偿单模光纤。公开和描述了符合本发明的波导纤维的折射率分布。这些折射率分布提供了具有负总色散和负总色散斜率的波导光纤，使得标准波导光纤在扩展的波长范围内被补偿。还公开并描述了使用根据本发明的光纤的电信链路。示出了在1：1至3：1的范围内补偿光纤长度比的标准光纤在限制非线性色散效应方面给出最佳的链路性能。

10. 发明授权

US06640038B2 Dispersion managed fibers having reduced sensitivity to manufacturing variabilities 失效
公开(公告)号：US06640038B2
公开(公告)日：2003-10-28
申请号：US09853070
申请日：2001-05-09
申请人： V. Srikant
发明人： V. Srikant
IPC分类号： G02B618
CPC分类号： G02B6/02004 , G02B6/02247 , G02B6/03611 , G02B6/03644 , G02B6/03677 , G02B6/29376
摘要： Dispersion managed fibers which preferably have a central core region, a moat region, and a ring region are provided. The central core region preferably has an alpha profile with an alpha value preferably less than about 2.3. The moat region preferably includes four sub-regions, namely, a first sub-region (11) in which the index of refraction decreases, a second sub-region (12) in which the index of refraction increases substantially linearly, a fourth sub-region (14) in which the index of refraction again increases substantially linearly, and a third sub-region (13) which serves as a transition region which smoothly connects the third and fourth substantially linear sub-regions. The dispersion managed fibers preferably have the following properties: (a) they exhibit reduced sensitivity to manufacturing variabilities, (b) they have relatively small changes in mode field diameter at the junctions between fiber sections having positive dispersions and fiber sections having negative dispersions, and/or (c) they can be readily manufactured using the tablet method.

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