公开(公告)号：US5887099A

公开(公告)日：1999-03-23

申请号：US942966

申请日：1997-10-03

申请人： Andrei Csipkes ,  John Mark Palmquist ,  Ian Arthur White

发明人： Andrei Csipkes ,  John Mark Palmquist ,  Ian Arthur White

IPC分类号： G02B6/38 ,  G02B6/36

CPC分类号： G02B6/3821 ,  G02B6/3847 ,  G02B6/3851 ,  G02B6/3863 ,  G02B6/3891

摘要： An improved fiber optic cable connector is provided that exhibits a consistent return loss rating of 60 dB or better. The connector comprises matable connector housings that terminate the ends of respective optical cables to be joined. Within each housing, the optical fiber of the respective cable is secured within a ceramic ferrule that extends axially of the connector. The endface of each optical fiber is exposed at the end of its respective ferrule. The ends of the ferrules are ground and polished in such a way that the endfaces of the optical fibers exhibit a planar undercut with respect to the lip of the axial passageway in which the fibers are secured. When the ferrules are brought and pressed together end-to-end as the connectors are mated, the material of each ferrule compresses until the endfaces of the optical fibers engage each other with near null pressure. The result is the near elimination of pressure on the optical fiber itself, which avoids a density and index of refraction change at the junction and thus improves return loss performance.

摘要翻译： 提供了一种改进的光缆连接器，其具有60dB或更好的一致的回波损耗等级。 连接器包括可连接的连接器壳体，其终止待连接的相应光缆的端部。 在每个外壳内，各个电缆的光纤被固定在一个陶瓷套圈内，该陶瓷套圈沿连接器的轴向延伸。 每个光纤的端面在其相应的套圈的端部露出。 套圈的端部被研磨和抛光，使得光纤的端面相对于固定有纤维的轴向通道的唇缘呈现平面底切。 当套圈在连接器配合时端对端地被按压在一起，每个套圈的材料压缩直到光纤的端面彼此接近无效的压力。 结果是近乎消除了光纤本身的压力，这避免了结处的密度和折射率变化，从而提高了回波损耗性能。

公开(公告)号：US5796894A

公开(公告)日：1998-08-18

申请号：US754948

申请日：1996-11-21

申请人： Andrei Csipkes ,  John Mark Palmquist ,  Ian Arthur White

发明人： Andrei Csipkes ,  John Mark Palmquist ,  Ian Arthur White

IPC分类号： G02B6/38

CPC分类号： G02B6/3821 ,  G02B6/3847 ,  G02B6/3851 ,  G02B6/3863 ,  G02B6/3891

摘要： An improved fiber optic cable connector is provided that exhibits a consistent return loss rating of 60 dB or better. The connector comprises matable connector housings that terminate the ends of respective optical cables to be joined. Within each housing, the optical fiber of the respective cable is secured within a ceramic ferrule that extends axially of the connector. The endface of each optical fiber is exposed at the end of its respective ferrule. The ends of the ferrules are ground and polished in such a way that the endfaces of the optical fibers exhibit a planar undercut with respect to the lip of the axial passageway in which the fibers are secured. When the ferrules are brought and pressed together end-to-end as the connectors are mated, the material of each ferrule compresses until the endfaces of the optical fibers engage each other with near null pressure. The result is the near elimination of pressure on the optical fiber itself, which avoids a density and index of refraction change at the junction and thus improves return loss performance.

公开(公告)号：US5995687A

公开(公告)日：1999-11-30

申请号：US762897

申请日：1996-12-10

申请人： Ian Arthur White

发明人： Ian Arthur White

IPC分类号： G01M11/00 ,  H04B10/08 ,  H04J14/02 ,  G02B6/26

CPC分类号： H04B10/071 ,  G01M11/3136 ,  H04J14/02

摘要： An optical integrated circuit is used to simultaneously test both the transmit fiber and the receive fiber in a fiber optic pair which extends between a telephone central office and a subscriber's site. By testing both fibers simultaneously testing time is cut in half without the loss of any important information, as fibers are replaced in pairs. In addition, the cost of test equipment is reduced considerably, as the expensive portions of the test equipment can be used for twice as many optical circuits as was heretofore possible. Finally, there are half as many connections needed between the optical switch and the optical integrated circuits built in accordance with the present invention, thereby simplifying their interconnections, and eliminating the extra cost in optical ports and interconnecting fiber.

摘要翻译： 光学集成电路用于同时测试在电话中心局和用户站点之间延伸的光纤对中的发射光纤和接收光纤。 通过同时测试两种纤维，测试时间将被削减一半，而不会损失任何重要信息，因为纤维成对更换。 此外，测试设备的成本大大降低，因为测试设备的昂贵部分可以用于迄今为止可能的两倍的光学电路。 最后，在根据本发明构建的光开关和光集成电路之间需要一半的连接，从而简化它们的互连，并消除光端口和互连光纤的额外成本。

公开(公告)号：US5703973A

公开(公告)日：1997-12-30

申请号：US625467

申请日：1996-03-29

申请人： Stephen Clement Mettler ,  Ian Arthur White

发明人： Stephen Clement Mettler ,  Ian Arthur White

IPC分类号： G02B6/30 ,  G02B6/12

CPC分类号： G02B6/30

摘要： An optical integrated circuit (OIC) 10 and an optical fiber array 20 are joined using index matching material, and mounted on a planar bridging structure 30 to form a device which can be readily connected to other devices using conventional optical connectors. The OIC and the fiber array comprise a silicon substrates 100, 200 having bottom surfaces that include reference areas 14, 24, and top sides that include a number of optical paths 16, 50. These paths are positioned above each reference area by an exact distance. Additionally, the bottom sides of the OIC and the fiber array include alignment features 13, 23 which are etched into their substrates and bear a predetermined horizontal relation to the optical paths. The planar bridging structure also includes a reference surface 34 that interfaces the reference surfaces of the OIC and the fiber array to assure that the optical paths are in vertical alignment. The resulting device achieves excellent alignment (i.e., less than 0.1 dB loss on average), without active alignment, when the fibers in the fiber array are carefully selected to have minimum eccentricity and similar diameters. The overall device is structurally completed by placing a bridging substrate 400 on the top surfaces of the OIC and the fiber array and then attaching a pair of spring clips 60 to support them as a unitary structure.

摘要翻译： 使用折射率匹配材料连接光学集成电路（OIC）10和光纤阵列20，并且安装在平面桥接结构30上以形成能够使用传统的光学连接器容易地连接到其它设备的设备。 OIC和光纤阵列包括具有底表面的硅衬底100,200，其包括参考区域14,24以及包括多个光路16,50的顶侧。这些路径被定位在每个参考区域上方精确距离 。 此外，OIC和光纤阵列的底面包括对准特征13,23，其被蚀刻到它们的衬底中并且与光路保持预定的水平关系。 平面桥接结构还包括与OIC和光纤阵列的参考表面相接合的参考表面34，以确保光路垂直对准。 当纤维阵列中的纤维被仔细选择为具有最小的偏心率和相似的直径时，所得到的装置实现了优异的对准（即，平均小于0.1dB的损耗），而无需主动对准。 通过将桥接基板400放置在OIC和光纤阵列的顶表面上，然后连接一对弹簧夹60以将它们支撑为整体结构，从而在结构上完成整个装置。

公开(公告)号：US6151431A

公开(公告)日：2000-11-21

申请号：US198660

申请日：1998-11-24

申请人： Ian Arthur White

发明人： Ian Arthur White

IPC分类号： G02F1/313 ,  H04Q11/00 ,  G02B6/26

CPC分类号： H04Q11/0005 ,  H04Q2011/0052

摘要： A non-blocking optical switch has a non-dilated architecture wherein dual mode input waveguides are connected to first and second inputs of mode selective couplers through mode conversion devices. Switching is effected by signals from a processing unit applied to a mode converter to convert the signal to be switched from a fundamental mode to a higher order mode. The mode selective coupler then couples the signal to one of the outputs thereof, whereas fundamental mode signals pass through to the other output thereof. An array of rows (layers) and columns of such elements make it possible to switch any incoming signal to be switched to any of a plurality of outputs after reconversion to the fundamental mode.

摘要翻译： 非阻塞光学开关具有非扩张结构，其中双模输入波导通过模式转换装置连接到模式选择耦合器的第一和第二输入。 切换由来自应用于模式转换器的处理单元的信号实现，以将要从基模切换的信号转换为高阶模式。 模式选择耦合器然后将信号耦合到其输出之一，而基本模式信号通过其另一输出。 这种元件的行（层）和列的阵列使得可以在重新转换为基本模式之后切换要切换到多个输出中的任何一个的任何输入信号。

公开(公告)号：US6049506A

公开(公告)日：2000-04-11

申请号：US240735

申请日：1999-01-29

申请人： Ian Arthur White

发明人： Ian Arthur White

IPC分类号： G01D5/353 ,  G01B9/02

CPC分类号： G01D5/35303

摘要： An optical fiber sensing system (20) applies spectral analysis to time-varying disturbances in the output optical power from a Sagnac interferometer. In particular, harmonically related null frequencies in the spectrum (402) of the output optical power from the Sagnac interferometer are used to uniquely determine the location of a disturbance along a fiber cable (50). An optical signal having relatively high coherence is fed into a splitter (25), which creates a pair of subsignals that are sent in opposite directions around a common optical path. The splitter is effective to recombine the subsignals after they have traveled around the common path. The location of the disturbance is determined by the formula: ##EQU1## z is the distance between the locations of the disturbance and the splitter;2L is the length of the common path;c is the speed of light;n.sub.e is the effective index of refraction of the optical fiber path experienced by the subsignals; and.OMEGA..sub.0 is the fundamental frequency associated with harmonically related nulls in the spectrum.Preferably, the sensing system is embedded within a communication system (60), which operates at wavelengths that are different than the wavelengths of the sensing system.

摘要翻译： 光纤传感系统（20）对来自Sagnac干涉仪的输出光功率的时变干扰进行频谱分析。 特别地，使用来自Sagnac干涉仪的输出光功率的频谱（402）中与谐波相关的零频率来唯一地确定沿着光纤线路（50）的扰动的位置。 具有相对较高相干性的光信号被馈送到分离器（25）中，分离器（25）产生一对沿相同方向围绕公共光路发送的子信号。 分路器在沿着公共路径行进之后重组子信号是有效的。 扰动的位置由公式确定：z是扰动位置与分离器之间的距离; 2L是公共路径的长度; c是光速; ne是子信号经历的光纤路径的有效折射率; 而OMEGA 0是与频谱中谐波相关的零点相关的基频。 优选地，感测系统嵌入在通信系统（60）内，该通信系统以与感测系统的波长不同的波长工作。

公开(公告)号：US5673342A

公开(公告)日：1997-09-30

申请号：US654499

申请日：1996-05-28

申请人： Katherine Theresa Nelson ,  William Alfred Reed ,  Kenneth Lee Walker ,  Ian Arthur White

发明人： Katherine Theresa Nelson ,  William Alfred Reed ,  Kenneth Lee Walker ,  Ian Arthur White

IPC分类号： G02B6/036 ,  G02B6/00 ,  G02B6/02 ,  G02B6/26 ,  G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H04B10/00 ,  H04B10/08 ,  H04B10/22 ,  H04B10/24

CPC分类号： G02B6/03627 ,  G02B6/02 ,  G02B6/266 ,  G02B6/03611 ,  G02B6/29368 ,  G02B6/4246

摘要： An optical fiber communication system according to the invention comprises an optical fiber filter that can be manufactured at low cost and that can be conveniently incorporated into the system, substantially like a conventional fiber jumper. The filter comprises a length L of axially uniform optical fiber selected to have substantially no loss (e.g., 20 dB) at a wavelength .lambda..sub.2. The length L will typically be less than 100 m. In one embodiment the optical fiber is a single mode optical fiber at .lambda..sub.1 (e.g., 1.3 .mu.m) that does not have a guided mode at .lambda..sub.2 (e.g., 1.55 .mu.m). In another embodiment the fiber contains a dopant that does substantially not absorb radiation of wavelength .lambda..sub.1, but substantially absorbs at .lambda..sub.2. In the second embodiment, .lambda..sub.1 can be greater than .lambda..sub.2. Fiber filters according to the invention can be advantageously used in a variety of communication systems, and exemplary systems are disclosed.

摘要翻译： 根据本发明的光纤通信系统包括可以以低成本制造并且可以方便地并入系统中的光纤滤波器，基本上像传统的光纤跳线一样。 滤波器包括长度为L的轴向均匀的光纤，其被选择为在波长λ1处基本上没有损耗（例如，<1dB），并且在波长λ2处具有相对高的损耗（例如，> 20dB）。 长度L通常将小于100米。 在一个实施例中，光纤是在λ1（例如，1.55μm）处不具有引导模式的λ1（例如，1.3μm）的单模光纤。 在另一个实施方案中，纤维包含基本上不吸收波长λ1的辐射但基本上以λ2吸收的掺杂剂。在第二实施方案中，λ1可以大于λ2.根据本发明的纤维过滤器可以有利地使用 在各种通信系统中，公开了示例性系统。