公开(公告)号：US07043125B2

公开(公告)日：2006-05-09

申请号：US10145327

申请日：2002-05-13

申请人： Phong Diep ,  James C. Fajardo ,  Ming-Jun Li ,  Daniel A. Nolan ,  Gang Qi

发明人： Phong Diep ,  James C. Fajardo ,  Ming-Jun Li ,  Daniel A. Nolan ,  Gang Qi

IPC分类号： G02B6/02

CPC分类号： G02B6/03666 ,  G02B6/02014 ,  G02B6/02223 ,  G02B6/02266 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03627 ,  H04B10/25

摘要： Disclosed is a single mode optical waveguide fiber having a low cut off wavelength, and mode field diameter and bend resistance similar to step index single mode optical waveguide fiber designed for use at 1310 nm. By including a clad region of raised refractive index spaced apart from the core region of the single mode optical waveguide fiber, the cut off wavelength can be reduced to 850 nm. The single mode optical waveguide fiber in accord with the invention may also have a core region having a reduced refractive index on centerline surrounded by a region of higher refractive index and a clad region which is substantially uniform. The single mode optical waveguide fiber is thus ideally suited for use with the low cost, reliable VCSEL operating at 850 nm, a Fabry-Perot laser operating at 1310 nm, or a distributed feedback laser operating at 1550 nm thereby enabling low cost, easily installed, home access portions of the broadband telecommunications system.

公开(公告)号：US07411728B2

公开(公告)日：2008-08-12

申请号：US11473481

申请日：2006-06-23

申请人： Phong Diep ,  James C. Fajardo

发明人： Phong Diep ,  James C. Fajardo

IPC分类号： H04B10/17

CPC分类号： H04B10/2916 ,  H04B10/25253

摘要： The present invention provides devices and methods for Raman amplification and dispersion compensation. According to one embodiment of the present invention, a dispersion compensating device includes a dispersion compensating fiber having a dispersion more negative than about −50 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; a Raman gain fiber having a dispersion more positive than about −40 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; and a pump source operatively coupled to the dispersion compensating fiber and the Raman gain fiber, the pump source operating at a pump wavelength, wherein the dispersion compensating fiber has a Raman Figure of Merit at the pump wavelength, and wherein the Raman gain fiber has a Raman Figure of Merit at least about equivalent to the Raman Figure of Merit of the dispersion compensating fiber, and wherein the dispersion compensating fiber and the Raman gain fiber are arranged in series between the input and the output of the device. The device provides higher Raman gain than a conventional Raman-pumped dispersion compensating device.

摘要翻译： 本发明提供拉曼放大和色散补偿的装置和方法。 根据本发明的一个实施例，色散补偿装置包括在约1555nm至约1615nm的波长范围内具有比约-50ps / nm / km更负的色散的色散补偿光纤; 在约1555nm至约1615nm的波长范围内具有比约-40ps / nm / km更正的色散的拉曼增益光纤; 以及泵浦源，其操作地耦合到所述色散补偿光纤和所述拉曼增益光纤，所述泵浦源以泵浦波长工作，其中所述色散补偿光纤具有在泵浦波长处的拉曼光谱图，并且其中所述拉曼增益光纤具有 拉曼品质因数至少大约相当于色散补偿光纤的拉曼品质因数，并且其中色散补偿光纤和拉曼增益光纤串联布置在设备的输入和输出之间。 该装置提供比常规拉曼泵浦色散补偿装置更高的拉曼增益。

公开(公告)号：US20080266649A1

公开(公告)日：2008-10-30

申请号：US12215939

申请日：2008-07-01

申请人： Phong Diep ,  James C. Fajardo

发明人： Phong Diep ,  James C. Fajardo

IPC分类号： H01S3/30

CPC分类号： H04B10/2916 ,  H04B10/25253

摘要： The present invention provides devices and methods for Raman amplification and dispersion compensation. According to one embodiment of the present invention, a dispersion compensating device includes a dispersion compensating fiber having a dispersion more negative than about −50 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; a Raman gain fiber having a dispersion more positive than about −40 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; and a pump source operatively coupled to the dispersion compensating fiber and the Raman gain fiber, the pump source operating at a pump wavelength, wherein the dispersion compensating fiber has a Raman Figure of Merit at the pump wavelength, and wherein the Raman gain fiber has a Raman Figure of Merit at least about equivalent to the Raman Figure of Merit of the dispersion compensating fiber, and wherein the dispersion compensating fiber and the Raman gain fiber are arranged in series between the input and the output of the device. The device provides higher Raman gain than a conventional Raman-pumped dispersion compensating device.

摘要翻译： 本发明提供拉曼放大和色散补偿的装置和方法。 根据本发明的一个实施例，色散补偿装置包括在约1555nm至约1615nm的波长范围内具有比约-50ps / nm / km更负的色散的色散补偿光纤; 在约1555nm至约1615nm的波长范围内具有比约-40ps / nm / km更正的色散的拉曼增益光纤; 以及泵浦源，其操作地耦合到所述色散补偿光纤和所述拉曼增益光纤，所述泵浦源以泵浦波长工作，其中所述色散补偿光纤具有在泵浦波长处的拉曼光谱图，并且其中所述拉曼增益光纤具有 拉曼品质因数至少大约相当于色散补偿光纤的拉曼品质因数，并且其中色散补偿光纤和拉曼增益光纤串联布置在设备的输入和输出之间。 该装置提供比常规拉曼泵浦色散补偿装置更高的拉曼增益。

公开(公告)号：US07697197B2

公开(公告)日：2010-04-13

申请号：US12215939

申请日：2008-07-01

申请人： Phong Diep ,  James C. Fajardo

发明人： Phong Diep ,  James C. Fajardo

IPC分类号： H01S3/00

CPC分类号： H04B10/2916 ,  H04B10/25253

摘要： The present invention provides devices and methods for Raman amplification and dispersion compensation. According to one embodiment of the present invention, a dispersion compensating device includes a dispersion compensating fiber having a dispersion more negative than about −50 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; a Raman gain fiber having a dispersion more positive than about −40 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; and a pump source operatively coupled to the dispersion compensating fiber and the Raman gain fiber, the pump source operating at a pump wavelength, wherein the dispersion compensating fiber has a Raman Figure of Merit at the pump wavelength, and wherein the Raman gain fiber has a Raman Figure of Merit at least about equivalent to the Raman Figure of Merit of the dispersion compensating fiber, and wherein the dispersion compensating fiber and the Raman gain fiber are arranged in series between the input and the output of the device. The device provides higher Raman gain than a conventional Raman-pumped dispersion compensating device.

摘要翻译： 本发明提供拉曼放大和色散补偿的装置和方法。 根据本发明的一个实施例，色散补偿装置包括在约1555nm至约1615nm的波长范围内具有比约-50ps / nm / km更负的色散的色散补偿光纤; 在约1555nm至约1615nm的波长范围内具有比约-40ps / nm / km更正的色散的拉曼增益光纤; 以及泵浦源，其操作地耦合到所述色散补偿光纤和所述拉曼增益光纤，所述泵浦源以泵浦波长工作，其中所述色散补偿光纤具有在泵浦波长处的拉曼光谱图，并且其中所述拉曼增益光纤具有 拉曼品质因数至少大约相当于色散补偿光纤的拉曼品质因数，并且其中色散补偿光纤和拉曼增益光纤串联布置在设备的输入和输出之间。 该装置提供比常规拉曼泵浦色散补偿装置更高的拉曼增益。

公开(公告)号：US07102812B2

公开(公告)日：2006-09-05

申请号：US10659523

申请日：2003-09-09

申请人： Phong Diep ,  James C. Fajardo

发明人： Phong Diep ,  James C. Fajardo

IPC分类号： H04B10/12

CPC分类号： H04B10/2916 ,  H04B10/25253

摘要： The present invention provides devices and methods for Raman amplification and dispersion compensation. According to one embodiment of the present invention, a dispersion compensating device includes a dispersion compensating fiber having a dispersion more negative than about −50 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; a Raman gain fiber having a dispersion more positive than about −40 ps/nm/km over a wavelength range of about 1555 nm to about 1615 nm; and a pump source operatively coupled to the dispersion compensating fiber and the Raman gain fiber, the pump source operating at a pump wavelength, wherein the dispersion compensating fiber has a Raman Figure of Merit at the pump wavelength, and wherein the Raman gain fiber has a Raman Figure of Merit at least about equivalent to the Raman Figure of Merit of the dispersion compensating fiber, and wherein the dispersion compensating fiber and the Raman gain fiber are arranged in series between the input and the output of the device. The device provides higher Raman gain than a conventional Raman-pumped dispersion compensating device.

摘要翻译： 本发明提供拉曼放大和色散补偿的装置和方法。 根据本发明的一个实施例，色散补偿装置包括在约1555nm至约1615nm的波长范围内具有比约-50ps / nm / km更负的色散的色散补偿光纤; 在约1555nm至约1615nm的波长范围内具有比约-40ps / nm / km更正的色散的拉曼增益光纤; 以及泵浦源，其操作地耦合到所述色散补偿光纤和所述拉曼增益光纤，所述泵浦源以泵浦波长工作，其中所述色散补偿光纤具有在泵浦波长处的拉曼光谱图，并且其中所述拉曼增益光纤具有 拉曼品质因数至少大约相当于色散补偿光纤的拉曼品质因数，并且其中色散补偿光纤和拉曼增益光纤串联布置在设备的输入和输出之间。 该装置提供比常规拉曼泵浦色散补偿装置更高的拉曼增益。

公开(公告)号：US06539151B2

公开(公告)日：2003-03-25

申请号：US09741887

申请日：2000-12-22

申请人： James C. Fajardo ,  Michael T. Gallagher ,  Michael J. Hackert ,  Daniel W. Hawtof ,  George E. Berkey ,  Daniel A. Nolan ,  Selina G. Farwell ,  Peter G. Wigley

发明人： James C. Fajardo ,  Michael T. Gallagher ,  Michael J. Hackert ,  Daniel W. Hawtof ,  George E. Berkey ,  Daniel A. Nolan ,  Selina G. Farwell ,  Peter G. Wigley

IPC分类号： G02B604

CPC分类号： G02B6/02042 ,  C03B37/01205 ,  C03B37/01214 ,  C03B37/027 ,  C03B37/028 ,  C03B37/075 ,  C03B2203/34 ,  C03B2203/40 ,  G02B6/02366 ,  G02B6/29353 ,  G02B6/29364 ,  G02B6/2937

摘要： Optical fiber structures having at least two cores, whether unitary or separable, may be fabricated by controlling the placement of the cores prior to final processing to make the multi-core fiber structure. When the fiber is to be separable, at least two performs are attached, and the attachment height between adjacent canes is controlled to allow separation to be realized (or attachment to be maintained there between) anywhere along the separable multi-core fiber. These canes are then drawn together to form a desired composite fiber, either or both ends of which may be separated to allow for individual manipulation of fiber ends. The separable multi-core fiber may be utilized to fabricate a dual-port or multi-port optical component in which an input and an output (or multiple input/output) fibers are attached to the component, and the exposed distal ends of the separable multi-core fiber are thereafter separated from one another (even after the entire device is assembled and packaged) to provide separated waveguides for pigtailing or splicing to input or output fibers (or other planar or micro-optic components).

摘要翻译： 具有至少两个芯的光纤结构（无论是单一的还是可分离的）可以通过在最终加工之前控制芯的放置来制造多芯光纤结构。 当纤维是可分离的时，附加至少两个表面，并且控制相邻拐杖之间的附着高度，以便沿着可分离的多芯纤维在任何地方实现分离（或在其间保持连接）。 然后将这些藤条拉在一起以形成所需的复合纤维，其中任一个或两端可分离，以允许单独操作纤维末端。 可分离的多芯光纤可以用于制造双端口或多端口光学部件，其中输入和输出（或多个输入/输出）光纤附接到部件，并且可分离的多芯光纤的暴露的远端 此后，多芯光纤彼此分离（即使在整个器件组装和封装之后），以提供分离的波导，用于对输入或输出光纤（或其他平面或微光学部件）进行辫子或拼接。

公开(公告)号：US06445862B1

公开(公告)日：2002-09-03

申请号：US09596916

申请日：2000-06-20

申请人： James C. Fajardo ,  V. Srikant ,  James A. West

发明人： James C. Fajardo ,  V. Srikant ,  James A. West

IPC分类号： G02B602

CPC分类号： G02B6/02333 ,  G02B6/02261 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/0238 ,  G02B6/03677

摘要： A fiber optic waveguide is disclosed. The fiber optic waveguide includes a core region, and a moat region surrounding the core region. A cladding region surrounds the moat region and the core region. The cladding region includes a lattice of column structures disposed within a solid background matrix. A diameter of the core region is sized for making contact with the moat region for creating an extended core region at longer wavelengths. The core region, the moat region, and the cladding region function to produce unique dispersion compensating properties, which include negative dispersion and positive dispersion. The core region may be formed from a high index material and the moat region may be formed from a material having a refractive index lower than the refractive index of the core region. The cladding region is formed from a material having a refractive index which is higher than the index of the moat region and lower than the refractive index of core region.

摘要翻译： 公开了一种光纤波导。 光纤波导包括核心区域和围绕核心区域的护城河区域。 覆盖区域围绕护城河区域和核心区域。 包层区域包括布置在固体背景矩阵内的列结构的格子。 核心区域的直径的大小适于与护城河区域接触以在较长波长处产生延伸的核心区域。 核心区域，护环区域和包层区域产生独特的色散补偿特性，其包括负色散和正色散。 芯区域可以由高折射率材料形成，并且护环区域可以由折射率低于芯部区域的折射率的材料形成。 包层区域由折射率高于护城河区域的折射率并低于核心区域的折射率的材料形成。

公开(公告)号：US06870999B2

公开(公告)日：2005-03-22

申请号：US10926717

申请日：2004-08-25

申请人： Douglas C. Allan ,  John T. Brown ,  Lisa C. Chacon ,  Adam J. G. Ellison ,  James C. Fajardo ,  Stuart Gray ,  Keith L. House ,  Karl W. Koch, III ,  Dale R. Powers ,  James A. West

发明人： Douglas C. Allan ,  John T. Brown ,  Lisa C. Chacon ,  Adam J. G. Ellison ,  James C. Fajardo ,  Stuart Gray ,  Keith L. House ,  Karl W. Koch, III ,  Dale R. Powers ,  James A. West

IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/02 ,  G02B6/036 ,  G02F1/35

CPC分类号： C03C13/045 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01807 ,  C03B37/01823 ,  C03B37/01853 ,  C03B2201/20 ,  C03B2201/22 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2207/30 ,  C03B2207/36 ,  C03C4/0042 ,  C03C13/046 ,  G02B6/02 ,  G02B6/02228 ,  G02B6/02271 ,  G02B6/03644 ,  G02B6/03677 ,  G02B6/03694

摘要： An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen -18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.

摘要翻译： 提供了一种同位素改性的二氧化硅基光纤，其比传统的二氧化硅基光纤具有更低的损耗，更宽的带宽和更广泛的拉曼增益光谱特性。 更重，更不自然丰富的硅或氧的同位素代替较轻的，更自然的丰富的同位素，以将红外吸收转移到稍长的波长。 在一个实施方案中，氧-18至少在纤维的核心区域中替代天然丰富的氧-16。 所得到的同位素改变的光纤比常规光纤的损耗最小为0.044 dB / km，对于0.044-0.034 dB / km之间的损耗范围，宽带宽为17％。 纤维可以通过等离子体化学气相沉积技术容易地用传统的纤维制造设备制造。 当在纤维的核心区域中进行氧-18的氧-16取代为50％时，拉曼增益谱显着扩大。

公开(公告)号：US06444133B1

公开(公告)日：2002-09-03

申请号：US09563390

申请日：2000-04-28

申请人： James C. Fajardo ,  Thomas A. Cook ,  Michael T.. Gallagher

发明人： James C. Fajardo ,  Thomas A. Cook ,  Michael T.. Gallagher

IPC分类号： C03B37012

CPC分类号： G02B6/02328 ,  C03B37/0122 ,  C03B37/0124 ,  C03B2203/42 ,  C03C25/68 ,  G02B6/02347

摘要： A method is provided for making a photonic band gap fiber including the steps of etching a preform and then drawing the preform into a photonic band gap fiber. Glass tubes are bundled and then formed into a photonic crystal perform having a number of passageways by reducing the cross-section of the bundle. One of the passageways is enlarged by flowing an etchant through it. After cleaning, the band gap fiber is made from the etched photonic preform, for example, by drawing.

摘要翻译： 提供了一种用于制造光子带隙光纤的方法，包括以下步骤：蚀刻预成型件，然后将预成型件拉制成光子带隙光纤。 玻璃管被捆扎，然后通过减小束的横截面而形成具有多个通道的光子晶体。 其中一条通道通过流过蚀刻剂而扩大。 在清洁之后，带隙光纤由蚀刻的光子预制棒制成，例如通过拉制。

公开(公告)号：US06652163B2

公开(公告)日：2003-11-25

申请号：US10004375

申请日：2001-10-31

申请人： James C. Fajardo ,  Michael T. Gallagher ,  Qi Wu

发明人： James C. Fajardo ,  Michael T. Gallagher ,  Qi Wu

IPC分类号： G02B6255

CPC分类号： G02B6/2551 ,  G02B6/02347

摘要： An optical splice joint and splicing process are provided for joining an end portion of a microstructured optical fiber having a microstructure formed from an array of holes, and a conventional optical fiber. The optical splice joint is formed from a fused portion of opposing end portions of the microstructured optical fiber and optical fiber, wherein the microstructured optical fiber is surrounded by a jacket that is at least 1.6 times thicker along its radius than the microstructure, and has a tensile strength of at least 30 Kpsi with an optical loss of less than 0.30 dB, and relatively little shrinkage (i.e., about 30%) of the holes forming the microstructure. The splice joint is formed by aligning end portions of the microstructured optical fiber and the optical fiber, in a fusion splicer, and applying fusion heat to the fiber ends in a two step process with a low current arc that is offset with respect to the end of the microstructured optical fiber.

摘要翻译： 提供了一种光接头接合和接合方法，用于连接具有由孔阵列形成的微结构的微结构光纤的端部和常规的光纤。 光接头由微结构化光纤和光纤的相对端部的熔融部分形成，其中微结构化光纤被围绕其半径大于微结构的1.6倍的护套包围，并具有 拉伸强度至少为30Kpsi，光损耗小于0.30dB，形成微结构的孔的收缩率相对较小（即约30％）。 接合接头通过将微结构化光纤和光纤的端部对准在熔接机中形成，并且以两步法对光纤端部施加融合热，该电流电弧相对于端部偏移 的微结构光纤。