-
公开(公告)号：US5963684A
公开(公告)日：1999-10-05
申请号：US800732
申请日：1997-02-13
CPC分类号： G02B6/12007 , G02B6/29311 , G02B6/2938 , G02B6/4246 , G02B6/4204 , G02B6/4292 , Y10S372/703
摘要： An optical demultiplexing apparatus is capable of spatially separating a multiplexed optical signal into two or more optical wavelength signals thereof. An input multiplexed optical signal present on a first plane is imaged through a color-selective grating plane to a second plane. The color-selective grating has a nonlinear change of diffraction characteristics as a function of incident wavelength to provide substantial spatial separation in the second plane between bands of wavelengths proximate to the two or more optical wavelength signals. In another embodiment, the apparatus uses a polarization-selective grating to spatially separate a polarization-multiplexed optical signal into two substantial spatially separated optical polarization signals. In other embodiments, the optical apparatus may be used as an optical signal multiplexer, splitter, or combiner.
摘要翻译： 光解复用装置能够将复用的光信号空间分离成两个或多个光波长信号。 存在于第一平面上的输入复用光信号通过颜色选择光栅平面成像到第二平面。 色选择光栅具有作为入射波长的函数的衍射特性的非线性变化，以在靠近两个或更多个光波长信号的波长带之间的第二平面中提供实质的空间分隔。 在另一个实施例中，该装置使用偏振选择光栅将偏振复用光信号空间分离成两个基本空间上分离的光偏振信号。 在其他实施例中，光学装置可以用作光信号多路复用器，分离器或组合器。
-
公开(公告)号：US06891676B2
公开(公告)日：2005-05-10
申请号：US10340219
申请日：2003-01-10
申请人： Joseph Earl Ford , Gordon Wilson
发明人： Joseph Earl Ford , Gordon Wilson
CPC分类号： G02B6/2931 , G02B6/29313 , G02B6/29314 , G02B6/29361 , G02B6/29373 , G02B6/29395
摘要： An optical spectral filtering device and associated method for selectively directing a portion of a wavelength multiplexed input signal, entering through an optical fiber, into one or more output signals provided to one or more optical fibers and/or electronic outputs. The optical filtering is accomplished using free-space diffractive wavelength demultiplexing optics combined with a fixed (permanent) patterned structure located in the spectrally dispersed image plane. The structure can block or direct a selected spectral portion of the optical signal to one or more separate outputs, such as an optical fiber or power detector. A single active element in the optical path is used to spatially shift, or steer, the entire input spectrum at the dispersed spectral image plane, to control the portion of the input spectrum illuminating specific features on the permanent patterned structure.
摘要翻译： 一种光谱滤波装置和相关联的方法，用于选择性地将波长多路复用输入信号的一部分通过光纤输入到提供给一个或多个光纤和/或电子输出的一个或多个输出信号。 使用自由空间衍射波长解复用光学器件与位于光谱分散图像平面中的固定（永久）图案化结构相结合来实现光学滤波。 该结构可以将光信号的选定光谱部分阻挡或引导到一个或多个单独的输出，例如光纤或功率检测器。 光路中的单个有源元件用于在分散的光谱图像平面上空间移位或引导整个输入光谱，以控制输入光谱的部分照亮永久图案化结构上的特征。
-
13.发明授权公开(公告)号：US06631246B2
公开(公告)日：2003-10-07
申请号：US09332677
申请日：1999-06-14
IPC分类号： G02B626
CPC分类号： G02B6/29374 , G02B6/29358 , G02B6/29394 , G02B6/29395 , H04B10/25133
摘要： In accordance with the invention, a WDM optical communication system includes a new tunable multi-channel dispersion compensating filter having low loss, low polarization dependence and capable of compensating many channels over a large wavelength range. In essence, the filter comprises an optical cavity with a near 100% reflector on one side and a variable partial reflector on the other side. The device acts as a tunable all-pass filter.
摘要翻译： 根据本发明，WDM光通信系统包括具有低损耗，低偏振依赖性并且能够在大波长范围内补偿多个信道的新的可调谐多通道色散补偿滤波器。 本质上，滤光器包括一个光学腔，一侧具有接近100％的反射器，另一侧具有可变部分反射器。 该器件充当可调谐全通滤波器。
-
公开(公告)号：US06337935B1
公开(公告)日：2002-01-08
申请号：US09375305
申请日：1999-08-16
IPC分类号： G02B628
CPC分类号： G02B6/2931 , G02B6/2938 , G02B6/29392
摘要： A method and apparatus for multiplexing and demultiplexing light signals of multiple wavelengths using two canceling dispersion stages with a stage between them which transforms the angular positions of the beams, the lateral positions of the beams, or both the angular and lateral positions of the beams. Light of multiple wavelengths is introduced through an input waveguide. The light then enters the first stage of the invention which disperses the signal. The dispersed signals then enter a second stage in which they are transformed. The transformed signals then enter a third stage where they are subject to the inverse of the dispersion performed in the first stage. In other words, if the third stage were placed immediately after the first stage, the third stage would nullify the dispersion of the first stage. However, adding the intervening transformation step results in only the simple linear dispersion being canceled in the system while the transformed part of the dispersion is retained. In specific examples of the invention, the intervening transformation step causes the resulting signals which are outputted from the third stage to remain coplanar with the input waveguide despite any displacement of the input waveguide in a direction orthogonal to both the direction of dispersion and the optical axis. This persistent alignment between the input and output waveguides reduces system performance degradation resulting from displacement caused by mechanical and thermal effects and also allows for multiple input/output combinations to be used consisting of stacked, linear arrays of fibers or waveguides.
摘要翻译： 一种用于使用两个消除色散级在其间具有级的多个波长的光信号进行多路复用和解复用的方法和装置，其转换光束的角位置，光束的横向位置或光束的角度和横向位置两者。 通过输入波导引入多个波长的光。 光然后进入分散信号的本发明的第一阶段。 然后，分散的信号进入它们被转换的第二阶段。 然后，变换的信号进入第三阶段，在第三阶段，它们受到在第一阶段中执行的色散的逆。 换句话说，如果在第一阶段之后立即放置第三阶段，则第三阶段将使第一阶段的分散无效。 然而，添加中间变换步骤导致在系统中仅消除简单的线性色散，同时保持色散的变换部分。 在本发明的具体示例中，尽管在与色散方向正交的方向和光轴方向上的输入波导的任何位移，中间变换步骤使得从第三级输出的结果信号保持与输入波导共面 。 输入和输出波导之间的这种持续对准降低了由机械和热效应引起的位移引起的系统性能下降，并且还允许使用包括堆叠的线性阵列的光纤或波导的多个输入/输出组合。
-
公开(公告)号：US06212314B1
公开(公告)日：2001-04-03
申请号：US09112264
申请日：1998-07-08
申请人： Joseph Earl Ford
发明人： Joseph Earl Ford
IPC分类号： G02B626
CPC分类号： G02B6/3536 , G02B6/12007 , G02B6/266 , G02B6/29353 , G02B6/3548 , G02B6/3584 , G02B6/3596 , G02B2006/12145 , G02B2006/12159
摘要： A class of opto-electronic mechanical devices that include a planar optical waveguide having a cladding in which there is carried an evanescent electric field by a light beam traveling along the waveguide and a mechanical micro-element controllably coupled into the evanescent field for varying locally the properties of the waveguide in a wavelength dependent fashion. The devices described include optical switches and WDM add/drop apparatus.
摘要翻译： 一类光电机械装置，其包括具有包层的平面光波导，其中通过沿着波导传播的光束携带ev逝电场，以及可控地耦合到ev逝场中的机械微元件，用于局部变化 以波长依赖的方式，波导的特性。 所描述的装置包括光开关和WDM分插装置。
-
16.发明授权Methods and apparatus for monitoring and controlling optical modulator signal quality 失效用于监测和控制光调制器信号质量的方法和装置
公开(公告)号：US6108119A
公开(公告)日：2000-08-22
申请号：US021745
申请日：1998-02-11
CPC分类号： H04L27/223 , G02F1/0121 , G02F1/0516 , H04L25/4902
摘要： Automatic bias setting circuits for multiple quantum well (MQW) diodes and optical modulators generally are described. Both digital and analog circuits are provided and techniques for utilizing such circuits for monitoring and controlling optical modulator signal quality are disclosed. In one approach, a desired modulation voltage range is determined. A bias voltage is stepped from a first predetermined voltage up to a second predetermined voltage. A maximum differential photocurrent is determined and the bias voltage corresponding to that photocurrent is then employed so that optimal optical modulator signal quality is achieved. An advantageous application of this technique is in wavelength division multiplexed (WDM) systems in which different optical modulators are operating at different wavelengths. In such a system, a different voltage bias will typically be determined for each optical modulator.
摘要翻译： 通常将描述多量子阱（MQW）二极管和光调制器的自动偏置设置电路。 提供数字和模拟电路以及用于利用这种电路来监测和控制光调制器信号质量的技术。 在一种方法中，确定期望的调制电压范围。 偏置电压从第一预定电压到第二预定电压阶跃。 确定最大差分光电流，然后采用与该光电流相对应的偏置电压，从而实现最佳光调制器信号质量。 这种技术的有利应用是波分复用（WDM）系统，其中不同的光调制器在不同波长下工作。 在这种系统中，通常将为每个光调制器确定不同的电压偏置。
-
公开(公告)号：US6002818A
公开(公告)日：1999-12-14
申请号：US985618
申请日：1997-12-05
CPC分类号： H04Q11/0005 , H04Q2011/0024 , H04Q2011/0026
摘要： A free-space N by M, where N and M>1, optical signal switch (OXC) requires only transmitter beam steering for controlling to which receiver an optical signal from a transmitter is directed. In a preferred embodiment the transmitters handle single mode optical signals and the receivers handle multimode optical signals. The OXC may optionally include a fixed optical unit implemented using either a single fixed shared lens or a plurality of M optical elements for further directing each of the M optical signals to their respective receivers.
摘要翻译： M的自由空间N，其中N和M> 1，光信号切换（OXC）仅需要发射机波束控制，以便控制来自发射机的光信号到哪个接收机。 在优选实施例中，发射机处理单模光信号，并且接收器处理多模光信号。 OXC可以可选地包括使用单个固定共享透镜或多个M个光学元件实现的固定光学单元，用于进一步将每个M个光学信号引导到它们各自的接收器。
-
公开(公告)号：US06704130B1
公开(公告)日：2004-03-09
申请号：US09415581
申请日：1999-10-08
申请人： Joseph Earl Ford , John VanAtta Gates, II , Gerard Edmond Henein , David Andrew Ramsey , James Albert Walker
发明人： Joseph Earl Ford , John VanAtta Gates, II , Gerard Edmond Henein , David Andrew Ramsey , James Albert Walker
IPC分类号： G02B2710
CPC分类号： G02B26/001 , G02B6/4214
摘要： In accordance with the invention, a electromechanical optical modulator comprising an optical membrane, a substrate and Fabry-Perot air gap between them is provided with an improved structure for controlling light transmitted into the substrate. Specifically, an etched and coated cavity is formed in the backwall of the substrate underlying the air gap to receive transmitted light and redirect it onto controllable paths within the substrate. Advantageously the substrate is silicon, and the cavity is produced by anisotropic etching.
摘要翻译： 根据本发明，包括光学膜，基底和它们之间的法布里 - 珀罗气隙的机电光学调制器具有改进的结构，用于控制透射到基底中的光。 具体来说，蚀刻和涂覆的空腔形成在气隙下面的基板的后壁中以接收透射光并将其重定向到基板内的可控路径上。 有利地，衬底是硅，并且通过各向异性蚀刻产生空腔。
-
19.发明授权公开(公告)号：US06634810B1
公开(公告)日：2003-10-21
申请号：US09414622
申请日：1999-10-08
IPC分类号： G02B628
CPC分类号： G02B6/2931
摘要： A free space multiport wavelength router for directing channels of a received WDM optic signal to a plurality of output ports. The inventive router includes a lens which receives an incoming WDM signal and focuses the signal on a grating for angular displacement, as a function of wavelength, of the individual channels in the WDM signal. The angularly displaced channels are then collimated by the lens and provided to an array of optical elements. The array is oriented relative to the lens so that each element in the array receives and imparts an orthogonal displacement to a corresponding channel relative to the dispersement direction provided by the grating. The othogonally-dispersed channels are then reflected back to the grating and are output to select output optic fibers.
摘要翻译： 一种用于将所接收的WDM光信号的信道引导到多个输出端口的自由空间多端口波长路由器。 本发明的路由器包括一个透镜，该透镜接收输入的WDM信号，并将信号聚焦在用于WDM信号中各个通道的波长的角位移的光栅上。 然后角度位移的通道被透镜准直并提供给光学元件的阵列。 阵列相对于透镜定向，使得阵列中的每个元件相对于由光栅提供的分散方向接收并向相应通道施加正交位移。 然后将正交分散的通道反射回光栅并输出以选择输出光纤。
-
公开(公告)号：US06567195B1
公开(公告)日：2003-05-20
申请号：US09335334
申请日：1999-06-17
IPC分类号： H04B1024
CPC分类号： H04B10/2587 , G02F1/0121
摘要： An optical local area network uses modified remote network interface cards (NICs) to provide an optical carrier signal for signaling use by a centralized optoelectronic switch unit. The NIC optical transceiver is modified so that instead of being normally “off” during the standby mode, the data signal is logically inverted to be “on.” Light from each NIC is used to provide optical power for a corresponding optical modulator on the switch unit.
摘要翻译： 光学局域网使用改进的远程网络接口卡（NIC）来提供光载波信号，用于集中式光电开关单元的信令使用。 NIC光收发器被修改为使得在待机模式期间不是正常地“关闭”数据信号在逻辑上反转为“开”。 来自每个NIC的光用于为开关单元上的对应的光调制器提供光功率。
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.023 秒)
