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1. 发明申请

US20120230626A1 Optical Modulator Utilizing Unary Encoding And Auxiliary Modulator Section For Load Balancing 有权
标题翻译：光调制器利用一次编码和辅助调制器部分进行负载平衡
公开(公告)号：US20120230626A1
公开(公告)日：2012-09-13
申请号：US13413883
申请日：2012-03-07
申请人： Peter C. Metz , Bipin Dama , Kalpendu Shastri
发明人： Peter C. Metz , Bipin Dama , Kalpendu Shastri
IPC分类号： G02F1/035
CPC分类号： G02F1/011 , G02F1/225 , G02F2001/0113 , H04B10/5051 , H04B10/5053 , H04B10/516
摘要： An optical modulator is configured to include multiple modulating sections formed along each arm and create a unary-encoded optical output signal by driving the number of sections required to represent the data value being transmitted (e.g., three sections driven to represent the data value “3”, four sections driven to represent the data value “4”). An auxiliary modulating section, isolated from the optical signal path, is included for creating a path for current flow in situations where only an odd number of modulating sections are required to represent the data. The activation of the auxiliary modulation section minimizes the current imbalance that would otherwise be present along a common node of the arrangement.
摘要翻译：光调制器被配置为包括沿着每个臂形成的多个调制部分，并且通过驱动表示所传送的数据值所需的部分数量（例如，驱动以表示数据值“3”的三个部分）来创建一次编码的光输出信号 “，四个部分被驱动以表示数据值”4“）。包括与光信号路径隔离的辅助调制部分，用于在只需要奇数个调制部分来表示数据的情况下创建用于电流的路径。辅助调制部分的激活使得沿着该装置的公共节点将存在的电流不平衡最小化。

2. 发明授权

US07796842B2 AC-coupled differential drive circuit for opto-electronic modulators 有权
标题翻译：用于光电调制器的交流耦合差分驱动电路
公开(公告)号：US07796842B2
公开(公告)日：2010-09-14
申请号：US11973190
申请日：2007-10-05
申请人： Paulius Mindaugas Mosinskis
发明人： Paulius Mindaugas Mosinskis
IPC分类号： G02F1/035 , G06G7/14
CPC分类号： G02F1/2255 , G02F2001/212
摘要： An AC-coupled differential drive circuit for an optical modulator is utilized, where a common “node” is defined between top (or bottom) plates of the modulator arms themselves (the “arms” of a modulator taking the form of MOS capacitors). A low pass filter is disposed between the differential driver output and the modulator's common node to provide the desired AC coupling by filtering out the DC bias voltage of the driver circuit itself without the need for a separate, external AC coupling capacitor. An independent, adjustable DC potential can then be applied to the common node, and will appear in a balanced manner across each arm of the modulator to provide the desired DC bias for the modulator independent of the DC bias of the driver circuit.
摘要翻译：利用用于光调制器的AC耦合差分驱动电路，其中在调制器臂本身的顶部（或底部）板之间限定了共同的“节点”（以MOS电容器的形式的调制器的“臂”）。低通滤波器设置在差分驱动器输出和调制器的公共节点之间，以通过滤除驱动器电路本身的直流偏置电压来提供所需的AC耦合，而不需要单独的外部AC耦合电容器。然后可以将独立的，可调节的直流电位施加到公共节点，并且将以调制器的每个臂的平衡方式出现，以提供与调制器电路的直流偏压无关的调制器的期望直流偏置。

3. 发明授权

US07706644B2 Offset launch mode from nanotaper waveguide into multimode fiber 有权
标题翻译：从纳米孔波导到多模光纤的偏移发射模式
公开(公告)号：US07706644B2
公开(公告)日：2010-04-27
申请号：US12218367
申请日：2008-07-15
申请人： Mark Webster , Prakash Gothoskar , Vipulkumar Patel , David Piede
发明人： Mark Webster , Prakash Gothoskar , Vipulkumar Patel , David Piede
IPC分类号： G02B6/26
CPC分类号： G02B6/30 , G02B6/3598 , G02B6/3636 , G02B6/3652 , G02B6/3692 , G02B6/4249
摘要： One or more nanotaper coupling waveguides formed within an optical substrate allows for straightforward, reproducible offset launch conditions to be achieved between an incoming signal and the core region of a multimode fiber (which may be disposed along an alignment fixture formed in the optical substrate), fiber array or other multimode waveguiding structure. Offset launching of a single mode signal into a multimode fiber couples the signal into favorable spatial modes which reduce the presence of differential mode dispersion along the fiber. This approach to providing single mode signal coupling into legacy multimode fiber is considered to be an improvement over the prior art which required the use of an interface element between a single mode fiber and multimode fiber, limiting the number of propagating signals and applications for the legacy multimode fiber. An optical switch may be used to select the specific nanotaper(s) for coupling into the multimode fiber.
摘要翻译：形成在光学衬底内的一个或多个纳米锥耦合波导允许在多模光纤（其可以沿着形成在光学衬底中的对准夹具设置）的入射信号和芯区域之间实现简单，可再现的偏移发射条件，光纤阵列或其他多模波导结构。偏移将单模信号发射到多模光纤中将信号耦合到有利的空间模式，这降低了沿着光纤的差分色散的存在。将单模信号耦合提供给传统多模光纤的这种方法被认为是对需要使用单模光纤和多模光纤之间的接口元件的现有技术的改进，限制了传播信号的数量和遗留的应用多模光纤可以使用光学开关来选择用于耦合到多模光纤的特定纳米锥。

4. 发明授权

US07515778B2 Segmented optical modulator 有权
标题翻译：分段光调制器
公开(公告)号：US07515778B2
公开(公告)日：2009-04-07
申请号：US11973440
申请日：2007-10-09
申请人： Paulius Mindaugas Mosinskis , Robert Keith Montgomery , Prakash Gothoskar
发明人： Paulius Mindaugas Mosinskis , Robert Keith Montgomery , Prakash Gothoskar
IPC分类号： G02F1/225
CPC分类号： G02F1/2255 , G02F1/0121 , H04B10/5051 , H04B10/50575
摘要： An optical modulator is formed to include an adjustable drive arrangement for dynamically adjusting the effective length of the optical signals path(s) within the modulator. Each modulator arm is partitioned into a plurality of segments, with each segment coupled to a separate electrical signal driver. Therefore, the effective length of each modulator arm will be a function of the number of drivers that are activated for each arm at any given point in time. A feedback arrangement may be used with the plurality of drivers to dynamically adjust the operation of the modulator by measuring the extinction ratio as a function of optical power, turning “on” or “off” individual drivers accordingly.
摘要翻译：光学调制器被形成为包括可调驱动装置，用于动态地调节调制器内的光信号路径的有效长度。每个调制器臂被分割成多个段，每个段耦合到单独的电信号驱动器。因此，每个调制器臂的有效长度将是在任何给定时间点为每个臂激活的驱动器的数量的函数。反馈装置可以与多个驱动器一起使用，以通过测量作为光功率的函数的消光比来相应地“打开”或“关闭”个别驱动器来动态地调节调制器的操作。

5. 发明授权

US08031991B2 Low index, large mode field diameter optical coupler 有权
标题翻译：低折射率，大模场直径光耦合器
公开(公告)号：US08031991B2
公开(公告)日：2011-10-04
申请号：US12454963
申请日：2009-05-27
申请人： Mark Webster , Vipulkumar Patel
发明人： Mark Webster , Vipulkumar Patel
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： G02B6/1228
摘要： An optical coupler is formed of a low index material and exhibits a mode field diameter suitable to provide efficient coupling between a free space optical signal (of large mode field diameter) and a single mode high index waveguide formed on an optical substrate. One embodiment comprises an antiresonant reflecting optical waveguide (ARROW) structure in conjunction with an embedded (high index) nanotaper coupling waveguide. Another embodiment utilizes a low index waveguide structure disposed in an overlapped arrangement with a high index nanotaper coupling waveguide. The low index waveguide itself includes a tapered region that overlies the nanotaper coupling waveguide to facilitate the transfer of the optical energy from the low index waveguide into an associated single mode high index waveguide. Methods of forming these devices using CMOS processes are also disclosed.
摘要翻译：光耦合器由低折射率材料形成，并且具有适于提供在大尺寸场直径的自由空间光信号和形成在光学基片上的单模高折射率波导之间的有效耦合的模场直径。一个实施例包括结合嵌入式（高折射率）纳米锥耦合波导的反谐振反射光波导（ARROW）结构。另一实施例利用与高折射率纳米锥耦合波导重叠布置设置的低折射率波导结构。低折射率波导本身包括覆盖在纳米锥耦合波导上的锥形区域，以便将光能量从低折射率波导传输到相关联的单模高折射率波导中。还公开了使用CMOS工艺形成这些器件的方法。

6. 发明申请

US20110222812A1 Dopant Profile Control For High Speed Silicon-Based Optical Modulators 有权
标题翻译：高速硅基光调制器的掺杂分布控制
公开(公告)号：US20110222812A1
公开(公告)日：2011-09-15
申请号：US13029342
申请日：2011-02-17
申请人： Mark Webster , Vipulkumar Patel , Prakash Gothoskar , David Piede
发明人： Mark Webster , Vipulkumar Patel , Prakash Gothoskar , David Piede
IPC分类号： G02F1/01
CPC分类号： G02B6/12 , G02B6/26 , G02B26/00 , G02F1/025
摘要： A high speed silicon-based optical modulator with control of the dopant profiles in the body and gate regions of the device reduces the series resistance of the structure without incurring substantial optical power loss. That is, the use of increased dopant values in areas beyond the active region will allow for the series resistance to be reduced (and thus increase the modulating speed of the device) without incurring too large a penalty in signal loss. The dopant profiles within the gate and body regions are tailored to exhibit an intermediate value between the high dopant concentration in the contact areas and the low dopant concentration in the carrier integration window area.
摘要翻译：具有控制器件的主体和栅极区域中的掺杂剂分布的高速硅基光学调制器降低了结构的串联电阻而不会引起实质的光功率损耗。也就是说，在有源区域之外的区域中使用增加的掺杂剂值将允许降低串联电阻（从而增加器件的调制速度），而不会在信号损失中造成太大的惩罚。调整栅极和体区内的掺杂剂分布，以显示接触区域中的高掺杂剂浓度与载流子集成窗口区域中的低掺杂剂浓度之间的中间值。

7. 发明申请

US20090297093A1 Low index, large mode field diameter optical coupler 有权
标题翻译：低折射率，大模场直径光耦合器
公开(公告)号：US20090297093A1
公开(公告)日：2009-12-03
申请号：US12454963
申请日：2009-05-27
申请人： Mark Webster , Vipulkumar Patel
发明人： Mark Webster , Vipulkumar Patel
IPC分类号： G02B6/12 , G02B6/26
CPC分类号： G02B6/1228
摘要： An optical coupler is formed of a low index material and exhibits a mode field diameter suitable to provide efficient coupling between a free space optical signal (of large mode field diameter) and a single mode high index waveguide formed on an optical substrate. One embodiment comprises an antiresonant reflecting optical waveguide (ARROW) structure in conjunction with an embedded (high index) nanotaper coupling waveguide. Another embodiment utilizes a low index waveguide structure disposed in an overlapped arrangement with a high index nanotaper coupling waveguide. The low index waveguide itself includes a tapered region that overlies the nanotaper coupling waveguide to facilitate the transfer of the optical energy from the low index waveguide into an associated single mode high index waveguide. Methods of forming these devices using CMOS processes are also disclosed.
摘要翻译：光耦合器由低折射率材料形成，并且具有适合于提供在大尺寸场直径的自由空间光信号和形成在光学基片上的单模高折射率波导之间的有效耦合的模场直径。一个实施例包括结合嵌入式（高折射率）纳米锥耦合波导的反谐振反射光波导（ARROW）结构。另一实施例利用与高折射率纳米锥耦合波导重叠布置设置的低折射率波导结构。低折射率波导本身包括覆盖在纳米锥耦合波导上的锥形区域，以便将光能量从低折射率波导传输到相关联的单模高折射率波导中。还公开了使用CMOS工艺形成这些器件的方法。

8. 发明申请

US20090103850A1 Silicon-based optical modulator for analog applications 有权
标题翻译：用于模拟应用的硅基光调制器
公开(公告)号：US20090103850A1
公开(公告)日：2009-04-23
申请号：US12287366
申请日：2008-10-08
申请人： Kaipendu Shastri , Prakash Gothoskar , Vipulkumar Patel , David Piede , Mark Webster
发明人： Kaipendu Shastri , Prakash Gothoskar , Vipulkumar Patel , David Piede , Mark Webster
IPC分类号： G02F1/035
CPC分类号： G02F1/0121 , G02F1/2255 , G02F1/2257 , G02F2001/0152
摘要： A silicon-insulator-silicon capacitive (SISCAP) optical modulator is configured to provide analog operation for applications which previously required the use of relatively large, power-consuming and expensive lithium niobate devices. An MZI-based SISCAP modulator (preferably a balanced arrangement with a SISCAP device on each arm) is responsive to an incoming high frequency electrical signal and is biased in a region where the capacitance of the device is essentially constant and the transform function of the MZI is linear.
摘要翻译：硅 - 绝缘体 - 硅电容（SISCAP）光调制器被配置为为先前需要使用相对较大，耗电和昂贵的铌酸锂器件的应用提供模拟操作。基于MZI的SISCAP调制器（优选地，在每个臂上具有SISCAP器件的平衡布置）响应于输入的高频电信号，并且被偏置在器件的电容基本上恒定的区域中，并且MZI的变换函数是线性的

9. 发明授权

US07499620B2 Low loss SOI/CMOS compatible silicon waveguide 有权
标题翻译：低损耗SOI / CMOS兼容硅波导
公开(公告)号：US07499620B2
公开(公告)日：2009-03-03
申请号：US11516217
申请日：2006-09-06
申请人： Vipulkumar Kantilal Patel , Prakash Gothoskar , Robert Keith Montgomery , Margaret Ghiron
发明人： Vipulkumar Kantilal Patel , Prakash Gothoskar , Robert Keith Montgomery , Margaret Ghiron
IPC分类号： G02B6/10
CPC分类号： G02F1/025
摘要： A method and structure for reducing optical signal loss in a silicon waveguide formed within a silicon-on-insulator (SOI) structure uses CMOS processing techniques to round the edges/corners of the silicon material along the extent of the waveguiding region. One exemplary set of processes utilizes an additional, sacrificial silicon layer that is subsequently etched to form silicon sidewall fillets along the optical waveguide, the fillets thus “rounding” the edges of the waveguide. Alternatively, the sacrificial silicon layer can be oxidized to consume a portion of the underlying silicon waveguide layer, also rounding the edges. Instead of using a sacrificial silicon layer, an oxidation-resistant layer may be patterned over a blanket silicon layer, the pattern defined to protect the optical waveguiding region. A thermal oxidation process is then used to convert the exposed portion of the silicon layer into silicon dioxide, forming a bird's beak structure at the edges of the silicon layer, thus defining the “rounded” edges of the silicon waveguiding structure.
摘要翻译：用于减少在绝缘体上硅（SOI）结构中形成的硅波导中的光信号损耗的方法和结构使用CMOS处理技术来沿着波导区域的范围舍入硅材料的边缘/角。一个示例性的工艺集合利用附加的牺牲硅层，其随后被蚀刻以沿着光波导形成硅侧壁圆角，因此圆角“波浪”了波导的边缘。或者，牺牲硅层可以被氧化以消耗下面的硅波导层的一部分，也是边缘的四周。代替使用牺牲硅层，可以在覆盖硅层上图案化抗氧化层，所述图案被限定为保护光波导区域。然后使用热氧化工艺将硅层的暴露部分转化成二氧化硅，在硅层的边缘处形成鸟的喙结构，从而限定硅波导结构的“圆形”边缘。

10. 发明申请

US20120155799A1 Silicon-Based Opto-Electronic Integrated Circuit With Reduced Polarization Dependent Loss 有权
标题翻译：具有减少偏振相关损耗的硅基光电集成电路
公开(公告)号：US20120155799A1
公开(公告)日：2012-06-21
申请号：US13324251
申请日：2011-12-13
申请人： Kalpendu Shastri , Raymond Nering
发明人： Kalpendu Shastri , Raymond Nering
IPC分类号： G02B6/12
CPC分类号： G02B6/4246 , G02B6/305 , G02B6/42 , G02B6/421 , G02B6/4213
摘要： A silicon-based opto-electronic circuit is formed to exhibit reduced polarization-dependent loss by strategically placing the photodetecting device as close as possible to the entry point of the optical signal into the opto-electronic circuit arrangement. While the incoming optical signal will include both TE and TM modes, by minimizing the length of the optical waveguide path along which the signal must propagate before reaching a photodetector, the attenuation associated with TM mode signal will be negligible.
摘要翻译：形成硅基光电子电路，通过将光电检测器件尽可能靠近光信号的入射点策略地放置在光电子电路装置中，显示出减小的偏振相关损耗。当入射光信号将包括TE和TM模式时，通过最小化在到达光电检测器之前信号必须传播的光波导路径的长度，与TM模式信号相关联的衰减将是可忽略的。

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