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公开(公告)号：US4877300A
公开(公告)日：1989-10-31
申请号：US261270
申请日：1988-10-24
CPC分类号： G02B6/4202 , G02B6/262
摘要： Disclosed is a mode field modifier which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by first and second cladding layers having refractive indices n.sub.2 and n.sub.3, respectively. In an uptaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by a cladding layer having a refractive index n.sub.2. The refractive indices are such that n.sub.1 >n.sub.2 >n.sub.3. In both embodiments, there is a nonadiabatic taper intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.
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公开(公告)号：US5295210A
公开(公告)日：1994-03-15
申请号：US999296
申请日：1992-12-31
申请人： Daniel A. Nolan , David L. Weidman
发明人： Daniel A. Nolan , David L. Weidman
CPC分类号： G02B6/2835 , G02B6/2856
摘要： An achromatic fiber optic coupler of the type wherein three single-mode optical fibers are fused together along a portion of the lengths thereof to form a coupling region. Each fiber includes a core and a cladding, the lowest refractive index of the fiber claddings being n.sub.2. The fibers are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n.sub.3 surrounds the coupling region, n.sub.3 being lower than n.sub.2 by such an amount that the value of .DELTA..sub.2-3 is less than 0.125%, wherein .DELTA..sub.2-3 equals (n.sub.2.sup.2' -n.sub.3.sup.2)/2n.sub.2.sup.2.
摘要翻译： 这种类型的消色差光纤耦合器，其中三个单模光纤沿其长度的一部分熔合在一起以形成耦合区域。 每个光纤包括芯和包层，光纤包层的最低折射率为n2。 纤维在耦合区域中以三角形阵列布置。 折射率为n3的矩阵玻璃体围绕耦合区域，n3低于n2，使得（Delta）2-3的值小于0.125％，其中（Delta）2-3等于（n22'- n32）/ 2n22。
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公开(公告)号：US5418870A
公开(公告)日：1995-05-23
申请号：US234065
申请日：1994-04-28
IPC分类号： G02B6/122 , G02B6/26 , G02B6/28 , G02B6/34 , G02B6/42 , H01L31/173 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14
CPC分类号： G02B6/4246 , G02B6/262 , G02B6/2835 , G02B6/4231 , H01L31/167 , G02B6/29332
摘要： The invention features an optical two-way transmission-receiver communications system utilizing a coaxial coupler having a ring waveguide and a core waveguide. A surface of an integrated source/ring detector substrate is positioned adjacent said coaxial coupler endface. A ring detector on the substrate, which receives light transmissions from the ring waveguide, has an annular opening therein. A light source disposed on the substrate within the annular opening in the ring detector directs light transmissions to the core waveguide of the coaxial coupler. An alignment device positions the substrate with respect to the coaxial coupler so that the light source and detector are respectively aligned with the coaxial coupler core and ring waveguides.
摘要翻译： 本发明的特征在于利用具有环形波导和核心波导的同轴耦合器的光学双向传输 - 接收机通信系统。 集成源/环检测器基板的表面位于所述同轴耦合器端面附近。 接收来自环形波导的光传输的基板上的环形探测器在其中具有环形开口。 设置在环形探测器中的环形开口内的衬底上的光源将光传输引导到同轴耦合器的芯波导。 对准装置将基板相对于同轴耦合器定位，使得光源和检测器分别与同轴耦合器芯和环形波导对准。
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公开(公告)号：US06256442B1
公开(公告)日：2001-07-03
申请号：US09392000
申请日：1999-09-08
IPC分类号： G02B610
CPC分类号： G02B6/12011 , G02B6/10 , G02B6/12007 , G02B6/12026 , G02B6/12028 , G02B6/125 , G02B2006/12159
摘要： An athermalized integrated optical waveguide device in which thermal spectral shifts are inhibited is provided and in which the light transmitting properties are insensitive to temperature variations and fluctuations. The athermnalized integrated optical waveguide device has at least two waveguide core arms, preferably comprised of a silica glass, with the core arms cladded with a waveguide cladding composition, preferably a silica glass that has a boron concentration different than the cores. The first waveguide arm and the second waveguide arm have a difference in an effective index thermal slope in order to provide an athermalized device such as an intereferometer on a substantially planar substrate. In addition the at least two waveguide core arms are comprised of path segments having different waveguide core dimensions.
摘要翻译： 提供其中抑制热光谱偏移的非热化集成光波导器件，其中透光性对温度变化和波动不敏感。 该无源集成光波导器件具有至少两个波导芯臂，优选由石英玻璃构成，芯臂包覆有波导覆层组合物，优选具有不同于芯的硼浓度的石英玻璃。 第一波导臂和第二波导臂在有效折射率热斜率上具有差异，以便在基本平坦的基板上提供诸如干涉仪之类的非热化器件。 此外，至少两个波导芯臂由具有不同波导芯尺寸的路径段组成。
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公开(公告)号：US5339372A
公开(公告)日：1994-08-16
申请号：US75129
申请日：1993-06-09
CPC分类号： G02B6/2856
摘要： A low loss fiber optic coupler of the type wherein a plurality of single-mode optical fibers are fused together along a portion of the lengths thereof to form a coupling region. Each fiber includes a core and a cladding, the lowest refractive index of the fiber claddings being n.sub.2. Each of the output fibers of the coupler further includes a surface region of refractive index n.sub.4 that inhibits the coupling of light to lossy composite modes, n.sub.4 being lower than n.sub.2.
摘要翻译： 一种低损耗光纤耦合器，其中多个单模光纤沿其长度的一部分熔合在一起以形成耦合区域。 每个光纤包括芯和包层，光纤包层的最低折射率为n2。 耦合器的每个输出光纤还包括折射率为n4的表面区域，其阻止光耦合到有损复合模式，n4低于n2。
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公开(公告)号：US20090003753A1
公开(公告)日：2009-01-01
申请号：US11498658
申请日：2006-08-03
IPC分类号： G02F1/01
CPC分类号： H01S3/067 , C03B37/01217 , C03B37/01225 , C03B37/02781 , C03B2201/34 , C03B2203/14 , C03B2203/30 , C03B2205/08 , C03B2205/10 , G02B6/02 , G02B6/0281 , G02B6/03627 , G02B6/03655 , G02B6/03694 , G02B6/105 , H01S3/06729 , H01S3/0675
摘要： A method for generating a linear single-polarization output beam comprises providing an optically active linearly birefringent and linearly dichroic fiber for propagating light and having a single polarization wavelength range and a gain bandwidth; optically pumping the optically active linearly birefringent and linearly dichroic fiber for obtaining fluorescence within the gain bandwidth; and aligning the single-polarization wavelength range to overlap a desired spectral region of the gain profile.
摘要翻译： 用于产生线性单偏振输出光束的方法包括提供用于传播光并具有单一偏振波长范围和增益带宽的光学有效线性双折射和线性二色光纤; 光学地泵浦光学有效的线性双折射和线性二色光纤，以在增益带宽内获得荧光; 并且将单极化波长范围对准以与增益曲线图的期望光谱区域重叠。
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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.
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公开(公告)号：US6137927A
公开(公告)日：2000-10-24
申请号：US216435
申请日：1998-12-18
申请人： Donald B. Keck , Daniel A. Nolan
发明人： Donald B. Keck , Daniel A. Nolan
CPC分类号： G02B6/12011 , G02B6/12007 , G02B6/2935 , G02B6/29395 , H04J14/02 , G02B6/29358
摘要： An N-port optical wavelength division multiplexer and demultiplexer includes two evanescent wave couplers connected by N optical paths. Each of the optical paths includes wavelength-selecting elements that are used to select specific wavelengths of light. Light signals composed of N wavelengths of light introduced to an exterior port in one of the couplers are split substantially equally among all the optical paths within the coupler, so that each optical path exiting the coupler includes light of all the wavelengths initially introduced to the coupler. The wavelength selecting elements disposed on each optical path are situated to direct the light in a manner such that light of only the selected wavelengths interferes constructively at a given exterior coupler port and other wavelengths interfere destructively. Consequently, optical signals composed of N wavelengths may be demultiplexed such that N optical paths carry light having one wavelength. Conversely, N optical paths carrying light signals having only one wavelength can be multiplexed into a signal having wavelengths .lambda..sub.1, .lambda..sub.2, . . . .lambda..sub.N. The multiplexed signal is then coupled into up to M+O exterior ports.
摘要翻译： N端口光波分复用器和解复用器包括由N个光路连接的两个瞬逝波耦合器。 每个光路包括用于选择特定波长的光的波长选择元件。 在耦合器之一中引入到外部端口的N个波长的光构成的光信号在耦合器内的所有光路中基本上相等地分开，使得离开耦合器的每个光路包括最初引入耦合器的所有波长的光 。 设置在每个光路上的波长选择元件被定位成以使得所选择的波长的光在给定的外部耦合器端口上建设性地干扰并且其它波长相消干涉的方式来引导光。 因此，由N个波长组成的光信号可以被解复用，使得N个光路携带具有一个波长的光。 相反，携带仅具有一个波长的光信号的N个光路可以被复用到具有波长λ1，λ2的信号中。 。 。 然后将复用的信号耦合到多达M + O外部端口。
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公开(公告)号：US5812978A
公开(公告)日：1998-09-22
申请号：US762804
申请日：1996-12-09
申请人： Daniel A. Nolan
发明人： Daniel A. Nolan
CPC分类号： A61G5/045 , G10L15/26 , A61G2203/14 , A61G2203/18
摘要： A voice-controlled wheelchair has a control system having a plurality of modes of operation in each of which only a limited number of commands for moving the wheelchair are executed. The commands are entered by a throat-engaging microphone, and backup commands are also recognized, including a command based on an excited utterance to stop the wheelchair. The control system is switchable by voice command between a first condition in which it executes other commands and a second condition in which it does not execute other commands.
摘要翻译： 语音控制轮椅具有控制系统，其具有多个操作模式，每个操作模式仅执行有限数量的用于移动轮椅的命令。 命令由喉咙的麦克风输入，并且还可以识别备份命令，包括基于激动的话语来停止轮椅的命令。 控制系统可以在执行其他命令的第一状态和不执行其他命令的第二状态之间通过语音命令切换。
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公开(公告)号：US5755450A
公开(公告)日：1998-05-26
申请号：US733813
申请日：1996-10-18
IPC分类号： A63C17/14
CPC分类号： A63C17/1409
摘要： A braking system for an in-line skate. The skate includes a boot mounted on a chassis. A cuff is rotatably mounted on the chassis. The chassis has a plurality of wheels rotatably mounted thereon. The braking system for the skate includes a brake pad housing which is either fixedly or pivotally attached to a rear portion of the cuff, a brake pad disposed in the housing, and a roller arm rotatably mounted on the chassis. The roller arm is spring loaded so that when the brake is not in use, the roller arm is disposed above the wheels. The roller arm has a bearing assembly disposed therein, so that when the brake is actuated by a rearward rotation of the cuff, the brake pad engages the bearing assembly of the roller arm, thereby causing said bearing assembly to engage said at least one of the wheels to slow and/or stop the skate.
摘要翻译： 用于直排轮滑的制动系统。 滑板包括一个安装在底盘上的靴子。 袖带可旋转地安装在底盘上。 底盘具有可旋转地安装在其上的多个车轮。 用于溜冰鞋的制动系统包括固定地或可枢转地附接到袖带的后部的制动衬块壳体，设置在壳体中的制动衬块和可旋转地安装在底盘上的辊臂。 辊臂是弹簧加载的，使得当制动器不使用时，辊臂设置在车轮上方。 辊臂具有设置在其中的轴承组件，使得当制动器通过套筒的向后旋转致动时，制动衬块与辊臂的轴承组件接合，从而使所述轴承组件接合所述至少一个 车轮减慢和/或停止滑冰。
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