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1. 发明授权

US06272154B1 Reconfigurable multiwavelength network elements 失效
标题翻译：可重配置的多波长网络元件
公开(公告)号：US06272154B1
公开(公告)日：2001-08-07
申请号：US09182644
申请日：1998-10-30
申请人： Krishna Bala , John Gamelin , W. John Tomlinson , Charles A. Brackett
发明人： Krishna Bala , John Gamelin , W. John Tomlinson , Charles A. Brackett
IPC分类号： H04J304
CPC分类号： H04J14/0283 , H04J14/0206 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0227 , H04J14/0241 , H04J14/0293 , H04J14/0297 , H04Q11/0062 , H04Q2011/0016 , H04Q2011/0073 , H04Q2011/0092
摘要： A reconfigurable multiwavelength network element includes a first demultiplexer unit for demultiplexing a first multiplexed optical signal from a first optical fiber into a first plurality of optical outputs; a second demultiplexer unit for demultiplexing a second multiplexed optical signal from a second optical fiber into a second plurality of optical outputs; a first multiplexer unit having first optical inputs for receiving signals to be multiplexed together; a second multiplexer unit having second optical inputs for receiving signals to be multiplexed together; and a cross-connect unit having first and second portions, the first portion directing signals received from at least a first one of the first plurality of optical outputs and a first one of the second plurality of optical outputs to a first one of the first optical inputs and a first one of the second optical inputs, the second portion directing signals received from at least a second one of the first plurality of optical outputs and a second one of the second plurality of optical outputs to a second one of the first optical inputs and a second one of the second optical inputs.
摘要翻译：可重新配置的多波长网络元件包括：第一解复用器单元，用于将第一复用光信号从第一光纤解复用为第一多个光输出; 第二解复用器单元，用于将第二复用光信号从第二光纤分离成第二多个光输出; 第一多路复用器单元，具有第一光输入端，用于接收待多路复用的信号; 第二多路复用器单元，具有用于接收待复用的信号的第二光输入; 以及具有第一和第二部分的交叉连接单元，所述第一部分将从所述第一多个光学输出中的至少第一个接收的信号和所述第二多个光学输出中的第一个信号接收到所述第一光学输出中的第一个输入和第二光输入中的第一个，第二部分将从第一多个光输出中的至少第二光输出和第二多个光输出中的第二个接收的信号引导到第一光输入中的第二光输入以及第二光输入中的第二个。

2. 发明授权

US06307653B1 Optical matrix protection system 失效
标题翻译：光矩阵保护系统
公开(公告)号：US06307653B1
公开(公告)日：2001-10-23
申请号：US09275413
申请日：1999-03-24
申请人： Krishna Bala , John Gamelin , W. John Tomlinson
发明人： Krishna Bala , John Gamelin , W. John Tomlinson
IPC分类号： H04B1000
CPC分类号： H04Q11/0005 , H04J14/0297 , H04Q2011/0058 , H04Q2011/0073 , H04Q2011/0081
摘要： An optical matrix protection system is described. Optical signals that are cross-connected by a N×N matrix switch are routed through alternative protection paths using an optical matrix protection system. The optical matrix protection system includes a N×1 optical switch and a 1×N optical switch. An input port of the 1×N optical switch is coupled to an output port of the N×1 optical switch. Input ports of the N×1 optical switch are connected to a plurality of 1×2 optical switches, which selectively switch input optical signals to either the N×N matrix switch or to the N×1 optical switch. Output ports of the 1×N optical switch are connected to a plurality of 2×1 optical switches, which selectively switch optical signals from either the N×N matrix switch or laid the 1×N optical switch to an output line.
摘要翻译：描述了光矩阵保护系统。通过NxN矩阵开关交叉连接的光信号使用光矩阵保护系统路由替代保护路径。光矩阵保护系统包括Nx1光开关和1xN光开关。 1xN光开关的输入端口连接到Nx1光开关的输出端口。 Nx1光开关的输入端口连接到多个1x2光开关，其选择性地将输入光信号切换到NxN矩阵开关或Nx1光开关。 1xN光开关的输出端口连接到多个2x1光开关，其选择性地切换来自N×N矩阵开关的光信号或将1xN光开关放置到输出线。

3. 发明授权

US06292281B1 Protection for MEMS cross-bar switch 失效
标题翻译：保护MEMS交叉杆开关
公开(公告)号：US06292281B1
公开(公告)日：2001-09-18
申请号：US09275414
申请日：1999-03-24
申请人： Krishna Bala , W. John Tomlinson
发明人： Krishna Bala , W. John Tomlinson
IPC分类号： H04B1008
CPC分类号： G02B6/3562 , G02B6/3512 , G02B6/3546
摘要： A protection system for a micro electro-mechanical system (MEMS) cross-bar switch is described. Optical signals that are cross-connected by a N×N optical matrix switch are routed through alternative protection paths using protection switch elements. The protection switch elements are incorporated as part of the silicon wafer based fabricated structure that forms the N×N optical matrix. The protection switch elements enable the N×N optical matrix switch to recover from one or more failures in switch elements of the N×N optical matrix using alternative protection paths that have the same path length as the original optical path.
摘要翻译：描述了用于微机电系统（MEMS）横杆开关的保护系统。通过NxN光矩阵开关交叉连接的光信号通过替代保护路径使用保护开关元件进行路由。保护开关元件作为形成NxN光学矩阵的基于硅晶片的制造结构的一部分被并入。保护开关元件使得NxN光矩阵开关能够使用具有与原始光路相同的路径长度的替代保护路径从NxN光矩阵的开关元件中的一个或多个故障中恢复。

4. 发明授权

US06549865B2 Method of controlling a dynamic gain controller 失效
标题翻译：控制动态增益控制器的方法
公开(公告)号：US06549865B2
公开(公告)日：2003-04-15
申请号：US09805885
申请日：2001-03-15
申请人： W. John Tomlinson
发明人： W. John Tomlinson
IPC分类号： G02B634
CPC分类号： H04B10/25073 , H04J14/0221
摘要： A method of controlling a response function of a pixelated dynamic gain controller involving structuring the problem as a set of linear equations that are used to efficiently and accurately determine an initial set of pixel settings and further can be iterated to determine optimum pixel settings for a desired response function. In particular, the gain controller is comprised of an array of individually controllable pixels such as an array of liquid crystals. Adjusting drive conditions to each pixel controls the relative transmission of a narrow band of wavelengths through each pixel. The target response function is achieved by structuring the control conditions as a set of linear equations with which it is possible to accurately determine an initial set of pixel settings. The settings can be iterated to determine an optimum setting for a desired response function or change in response function. Additionally, compensating pixels at the edges of the array are used to compensate for edge effects.
摘要翻译：一种控制像素化动态增益控制器的响应函数的方法，其涉及将问题构造为用于有效和准确地确定初始像素设置集合的一组线性方程，并且还可以迭代以确定期望的最佳像素设置响应功能。特别地，增益控制器由诸如液晶阵列的独立可控像素的阵列组成。调整每个像素的驱动条件控制通过每个像素的窄带波长的相对传输。通过将控制条件构造为一组线性方程式来实现目标响应函数，通过该方程可以精确地确定初始的像素设置集合。可以重复设置以确定所需响应函数的最佳设置或响应函数的改变。另外，在阵列边缘的补偿像素用于补偿边缘效应。

5. 发明授权

US07014326B2 Wavelength blocker 有权
公开(公告)号：US07014326B2
公开(公告)日：2006-03-21
申请号：US10237136
申请日：2002-09-09
申请人： David John Danagher , Thomas Ducellier , Robert I. MacDonald , Jasvinder Obhi , Barrie Keyworth , Paul H. Beckwith , W. John Tomlinson
发明人： David John Danagher , Thomas Ducellier , Robert I. MacDonald , Jasvinder Obhi , Barrie Keyworth , Paul H. Beckwith , W. John Tomlinson
IPC分类号： G02B26/00 , G02B27/44 , H04J14/02
CPC分类号： G02B6/356 , G02B6/272 , G02B6/2793 , G02B6/29302 , G02B6/29308 , G02B6/2931 , G02B6/3512 , G02B6/4215 , H04J14/0206 , H04J14/0212 , H04Q11/0005 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/003 , H04Q2011/0035 , H04Q2011/0049
摘要： A wavelength blocker including an input port for launching an input beam of light, first dispersing means for dispersing the input beam of light according to wavelength, an array of independently addressable elements for selectively blocking a portion of the dispersed beam of light, second dispersing means for receiving the passed dispersed beam of light and for producing a single multiplexed beam of light therefrom, and an output port for transmitting a modified output beam of light. The array of independently addressable elements are designed such that the wavelength blocker is capable of blocking a variable number of non-consecutive channels without significantly affecting the unblocked channels.

6. 发明授权

US06678445B2 Dynamic gain flattening filter 有权
标题翻译：动态增益平坦滤波器
公开(公告)号：US06678445B2
公开(公告)日：2004-01-13
申请号：US09727446
申请日：2000-12-04
申请人： W. John Tomlinson , Valentine N. Morozov , Yevgeniy Churin , Brian Lee Heffner , Long Yang , Jinxi Shen
发明人： W. John Tomlinson , Valentine N. Morozov , Yevgeniy Churin , Brian Lee Heffner , Long Yang , Jinxi Shen
IPC分类号： G02B634
CPC分类号： G02B6/2931 , G02B6/29391
摘要： A dynamic gain flattening filter is provided that offers a smooth spectral response. The filter includes an input/output port for launching a beam of light, a dispersive element for dispersing the beam of light into a plurality of monochromatic sub-beams of light, and discrete array of controllable elements for receiving the plurality of sub-beams of light. The filter is designed such that each sub-beam of light is incident on more than one element of the discrete array for selective attenuation before being recombined by the dispersive element and redirected back to the input/output port. In another embodiment, a beam-folding mirror is provided to direct the attenuated beam to a separate output port.
摘要翻译：提供了一种提供平滑光谱响应的动态增益平坦化滤波器。滤波器包括用于发射光束的输入/输出端口，用于将光束分散成多个单色子光束的分散元件，以及用于接收多个子光束的可控元件的离散阵列光。滤波器被设计成使得每个子光束入射到离散阵列的多于一个元件上，用于选择性衰减，然后由分散元件重组并重定向回到输入/输出端口。在另一个实施例中，提供了一个光束折叠镜以将衰减的光束引导到单独的输出端口。

7. 发明授权

US06498872B2 Optical configuration for a dynamic gain equalizer and a configurable add/drop multiplexer 有权
标题翻译：动态增益均衡器和可配置的分插复用器的光学配置
公开(公告)号：US06498872B2
公开(公告)日：2002-12-24
申请号：US09729270
申请日：2000-12-05
申请人： Oleg Bouevitch , Thomas Ducellier , W. John Tomlinson , Paul Colbourne , Jacques Bismuth
发明人： Oleg Bouevitch , Thomas Ducellier , W. John Tomlinson , Paul Colbourne , Jacques Bismuth
IPC分类号： G02B628
CPC分类号： G02B6/29383 , G02B6/2766 , G02B6/2773 , G02B6/2793 , G02B6/2931 , G02B6/29313 , G02B6/29395 , G02B6/29397
摘要： An optical device for rerouting and modifying an optical signal that is capable of operating as a dynamic gain equalizer (DGE) and/or a configurable optical add/drop multiplexer (COADM) is disclosed. The optical design includes a front-end unit for providing a collimated beam of light, an element having optical power for providing collimating/focusing effects, a diffraction element for providing spatial dispersion, and modifying means which in a preferred embodiment includes one of a MEMS array and a liquid crystal array for reflecting and modifying at least a portion of a beam of light. The modifying means functions as an attenuator when the optical device operates as a DGE and as a switching array when the optical device operates as a COADM. Advantageously, this invention provides a 4-f system wherein a preferred embodiment the element having optical power is a concave reflector for providing a single means for receiving light from the front-end unit, reflecting the received light to the dispersive element, receiving light from the dispersive element, and providing dispersed light to the modifying means. Conveniently and advantageously, this same concave reflector is utilized on a return path, obviating the requirement of matching elements. In one embodiment a single focussing/collimating lens is provided substantially at a focal plane of the element having optical power.
摘要翻译：公开了一种用于重新路由和修改能够作为动态增益均衡器（DGE）和/或可配置的光分插复用器（COADM）操作的光信号的光学装置。光学设计包括用于提供准直光束的前端单元，具有用于提供准直/聚焦效果的光焦度的元件，用于提供空间色散的衍射元件以及在优选实施例中包括MEMS 阵列和用于反射和修改光束的至少一部分的液晶阵列。当光学装置作为COADM工作时，修改装置用作衰减器，当光学装置作为DGE工作时，作为开关阵列起作用。有利地，本发明提供一种4-f系统，其中优选实施例具有光功率的元件是凹面反射器，用于提供用于接收来自前端单元的光的单个装置，将接收到的光反射到分散元件，分散元件，并向修改装置提供分散的光。方便和有利地，这种相同的凹面反射器用于返回路径，从而避免了匹配元件的要求。在一个实施例中，单个聚焦/准直透镜基本上设置在具有光焦度的元件的焦平面处。

8. 发明授权

US06327019B1 Dual liquid-crystal wavelength-selective optical switch 失效
标题翻译：双液晶波长选择光开关
公开(公告)号：US06327019B1
公开(公告)日：2001-12-04
申请号：US09018097
申请日：1998-02-03
申请人： Jayantilal Patel , W. John Tomlinson , Janet Lehr Jackel
发明人： Jayantilal Patel , W. John Tomlinson , Janet Lehr Jackel
IPC分类号： G02F113
CPC分类号： G02B6/272 , G02B6/2766 , G02B6/2793 , G02B6/29302 , G02B6/2931 , G02B6/29395 , G02F1/31 , G02F2203/05 , H04Q11/0003 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0041 , H04Q2011/0092
摘要： A liquid-crystal switching element relying upon a segmented liquid-crystal polarization modulator, at least one frequency-dispersive grating and one or more polarization-dispersive elements, such as Wollaston prisms, to switch separate wavelength-divided signals among four optical paths. The switching is done complementally between the fibers of each pair, and the same switching is done for the two pairs. According to the invention, all four beams can be processed by a single set of serial optics. The invention is particularly useful as an optical interconnect between two optical fiber communications rings in which each ring includes two counter-rotating fibers. The invention advantageously uses a dielectric thin-film beam splitter for one of the polarization-dispersive elements and a Wollaston prism for the other. The reflective embodiment in which a mirror replaces all the components on the output side can be improved by using two semitransparent electrode layers on the input side separated by a quarter-wavelength of dielectric.
摘要翻译：依赖于分段液晶偏振调制器，至少一个频率色散光栅和一个或多个偏振分散元件（例如Wollaston棱镜）的液晶开关元件在四个光路中切换分离的波长分割信号。在每对纤维之间互补地进行切换，并且对于两对进行相同的切换。根据本发明，所有四个光束都可以由一组串行光学器件处理。本发明作为两个光纤通信环之间的光学互连是特别有用的，其中每个环包括两个反向旋转的光纤。本发明有利地使用用于偏振分散元件之一的电介质薄膜分束器和用于另一个的Wollaston棱镜。通过使用由四分之一波长的电介质隔开的输入侧的两个半透明电极层，可以改善反射镜替代输出侧的所有分量的反射实施例。

9. 发明授权

US5960133A Wavelength-selective optical add/drop using tilting micro-mirrors 失效
标题翻译：使用倾斜微镜的波长选择光学加/减
公开(公告)号：US5960133A
公开(公告)日：1999-09-28
申请号：US13842
申请日：1998-01-27
申请人： W. John Tomlinson
发明人： W. John Tomlinson
IPC分类号： G02B6/34 , H04J14/02 , H04Q11/00 , G02B6/26
CPC分类号： G02B6/2931 , H04J14/0212 , H04Q11/0005 , H04Q2011/0022 , H04Q2011/0026
摘要： An optical switch particularly usable as a wavelength-division add/drop multiplexer (WADM) in a multi-wavelength communication system. Four multi-wavelength beams optically coupled to the input, output, add, and drop channels are arranged in parallel in a rectangular array and are incident upon a diffraction grating. The grating operating in one direction disperses the beams into their wavelength components and operating in the other direction recombines the wavelength components into a multi-wavelength beam. A lens focuses the components of the beams having a particular wavelength upon one of an array of tiltable micro-mirrors integrated on a silicon substrate. In one position, the mirror for a particular wavelength reflects that wavelength component from the input beam back to the output beam. In a second position, that mirror reflects that wavelength component from the input beam back to the drop beam and reflects that same wavelength component from the add beam back to the output beam. The same optics can be used for a second set of beams which are switched in synchronism with the first set. The array of mirrors can be fabricated to be tiltable to more than two positions so that the input beam can be selectively coupled to either the output beam or one of at least two drop beams while the output beam is correspondingly selectively coupled to either the input beam or one of at least two add beams.
摘要翻译：一种特别可用作多波长通信系统中的波分分多路复用器（WADM）的光开关。光耦合到输入，输出，添加和分离通道的四个多波长光束以矩形阵列并列布置并入射到衍射光栅上。在一个方向上操作的光栅将光束分散到其波长分量中，并且在另一方向上操作将波长分量重新组合成多波长光束。透镜将具有特定波长的光束的分量聚焦在集成在硅衬底上的可倾斜微反射镜的阵列之一。在一个位置，用于特定波长的反射镜将来自输入光束的波长分量反射回输出光束。在第二位置，该反射镜将来自输入光束的波长分量反射回到投影光束，并将相同的波长分量从附加光束反射回输出光束。相同的光学元件可用于与第一组同步切换的第二组光束。反射镜阵列可以被制造成可倾斜到多于两个位置，使得输入光束可以选择性地耦合到输出光束或至少两个液滴光束中的一个，而输出光束相应地选择性地耦合到输入光束或至少两个添加光束中的一个。

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