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公开(公告)号：US5703978A
公开(公告)日：1997-12-30
申请号：US695180
申请日：1996-08-01
申请人： David John DiGiovanni , Justin Boyd Judkins , Janet Renee Pedrazzani , Ashish Madhukar Vengsarkar , Kenneth Lee Walker
发明人： David John DiGiovanni , Justin Boyd Judkins , Janet Renee Pedrazzani , Ashish Madhukar Vengsarkar , Kenneth Lee Walker
CPC分类号： G02B6/0219 , G02B6/02095 , H01S3/10023 , H01S2301/04 , H01S3/0675
摘要： Applicants have determined that the temperature sensitivity of long-period grating devices is due to differential variation with temperature of the refractive indices of the core and cladding. They have further determined that the cladding profile and fiber composition can be redesigned to substantially reduce this differential variation, thereby reducing the temperature sensitivity of long-period gratings of less than 4 nm per 100.degree. C. and preferably less than 2 nm per 100.degree. C. This design permits the use of long-period grating devices without temperature control or compensation.
摘要翻译： 申请人已经确定长周期光栅器件的温度敏感性是由于芯和包层的折射率的温度的差异变化。 他们进一步确定，可以重新设计包层分布和纤维组成以显着降低该差异变化，从而降低每100℃小于4nm，优选小于2nm / 100°的长周期光栅的温度敏感性。 C.此设计允许使用长周期光栅器件，无需温度控制或补偿。
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2.发明授权
公开(公告)号：US5802236A
公开(公告)日：1998-09-01
申请号：US799311
申请日：1997-02-14
申请人： David John DiGiovanni , Ashish Madhukar Vengsarkar , Jefferson Lynn Wagener , Robert Scott Windeler
发明人： David John DiGiovanni , Ashish Madhukar Vengsarkar , Jefferson Lynn Wagener , Robert Scott Windeler
IPC分类号： C03B37/012 , C03B37/027 , G02B6/02 , G02B6/036 , H01S3/067 , G02B6/22
CPC分类号： G02B6/023 , B82Y20/00 , C03B37/0122 , C03B37/027 , G02B6/02028 , G02B6/02261 , G02B6/0228 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/02361 , C03B2201/34 , C03B2203/14 , C03B2203/36 , C03B2203/42 , G02B6/021 , G02B6/02366 , H01S3/06708
摘要： Disclosed are non-periodic microstructured optical fibers that guide radiation by index guiding. By appropriate choice of core region and cladding region, the effective refractive index difference .DELTA. between core region and cladding can be made large, typically greater than 5% or even 10 or 20%. Such high .DELTA. results in small mode field diameter of the fundamental guided mode (typically
摘要翻译： 公开了通过指数引导引导辐射的非周期性微结构光纤。 通过适当选择纤芯区域和包层区域，可以使芯区域和包层之间的有效折射率差ΔTA大，通常大于5％甚至10％或20％。 这种高DELTA导致基本导模（通常<2.5μm）的小模场直径，并且因此导致芯区域中的高辐射强度。 示例性地，根据本发明的纤维具有由内包层区域和外包层区域包围的固体二氧化硅芯区域。 包层区域具有在轴向纤维方向上延伸的毛细孔隙，外包层区域中的空隙具有比内包层区域更大的直径，使得外包层区域的有效折射率大于 内包层区域。 非周期性微结构纤维潜在地具有许多用途，例如作为色散补偿光纤（具有或不具有色散斜率补偿），作为放大光纤，激光器，可饱和吸收器，光纤光栅和非线性元件。 还公开了制造微结构纤维的方法。
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公开(公告)号：US5708669A
公开(公告)日：1998-01-13
申请号：US719278
申请日：1996-09-24
CPC分类号： H01S3/094003 , H01S3/06708 , H01S3/0675 , H01S3/06729 , H01S3/094007
摘要： A cladding pumped optical fiber laser comprises a length of optical fiber having a rare earth-doped region of diameter d.sub.RE >d.sub.01 where d.sub.01 is the mode diameter of the LP.sub.01 mode of the fiber at the laser radiation at wavelength .lambda.. In one embodiment the fiber has a core diameter d.sub.c selected such that the LP.sub.01 mode is the only guided spatial mode of the fiber, and d.sub.RE is greater than d.sub.c. In another embodiment the fiber supports at least one higher order guided spatial mode, typically LP.sub.11 or LP.sub.02, and d.sub.RE is approximately equal to or larger than d.sub.c. Currently preferred embodiments comprise a grating-defined laser cavity that comprises a mode-coupling refractive index grating. Cladding pumped lasers according to the invention will typically have efficient conversion of pump radiation to laser radiation, and consequently can typically be shorter than analogous prior art cladding pumped lasers.
摘要翻译： 包层泵浦光纤激光器包括具有直径d RE> d01的稀土掺杂区域的一段长度的光纤，其中d01是在波长λ的激光辐射下光纤的LP01模式的模式直径。 在一个实施例中，光纤具有选择的芯直径dc，使得LP01模式是光纤的唯一引导空间模式，并且d RE大于dc。 在另一个实施例中，光纤支持至少一个较高阶导向空间模式，通常为LP11或LP02，dRE大约等于或大于dc。 目前优选的实施例包括光栅限定的激光腔，其包括模耦合折射率光栅。 根据本发明的包层泵浦激光器通常将有效地将泵浦辐射转换成激光辐射，因此通常可以比现有技术的包层泵浦激光器更短。
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公开(公告)号：US5923684A
公开(公告)日：1999-07-13
申请号：US975899
申请日：1997-09-09
CPC分类号： H01S3/094003 , H01S3/0675 , H01S3/094011 , H01S3/094096
摘要： An optical fiber amplifier is pumped by a fiber pump laser which has a pair of separate active media within a common resonator. The fiber gain section of the amplifier is also located within the resonator.
摘要翻译： 光纤放大器由纤维泵浦激光器泵浦，光纤泵浦激光器在公共谐振器内具有一对单独的有源介质。 放大器的光纤增益部分也位于谐振器内。
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公开(公告)号：US5659644A
公开(公告)日：1997-08-19
申请号：US659853
申请日：1996-06-07
申请人： David John DiGiovanni , Stephen Gregory Grubb , Daryl Inniss , Ralph Stephen Jameson , Kenneth Lee Walker
发明人： David John DiGiovanni , Stephen Gregory Grubb , Daryl Inniss , Ralph Stephen Jameson , Kenneth Lee Walker
CPC分类号： G02B6/4215 , H01S3/094003 , G02B6/14 , G02B6/29356 , G02B6/2937 , G02B6/4207 , H01S3/0675 , H01S3/094069
摘要： In an optical fiber light source a section of multimode fiber is interposed between an energizing laser (e.g,, a diode laser) and a single mode fiber active medium. In a preferred embodiment the single mode fiber active medium is surrounded by a multimode cladding coupled to the multimode fiber. The source may serve as a pump laser for a fiber amplifier or as an amplified spontaneous emission source. Arrangements for coupling several energizing lasers to the active medium are also described.
摘要翻译： 在光纤光源中，将多模光纤的一部分介于激光激光器（例如，二极管激光器）和单模光纤活性介质之间。 在优选实施例中，单模光纤有源介质由耦合到多模光纤的多模包层围绕。 源可以用作光纤放大器的泵浦激光器或者作为放大的自发发射源。 还描述了将几个激励激光器耦合到活性介质的布置。
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6.发明授权Method of making an optical fiber with trench region in its index profile 有权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
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 。
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公开(公告)号：US07787733B2
公开(公告)日：2010-08-31
申请号：US12231967
申请日：2008-09-08
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.
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公开(公告)号：US20090067795A1
公开(公告)日：2009-03-12
申请号：US12231967
申请日：2008-09-08
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。
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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。
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公开(公告)号：US06542679B2
公开(公告)日：2003-04-01
申请号：US09847034
申请日：2001-05-01
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.
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