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1. 发明授权

US08520984B2 Silicon-based optical modulator with improved efficiency and chirp control 有权
标题翻译：硅基光学调制器，提高效率和啁啾控制
公开(公告)号：US08520984B2
公开(公告)日：2013-08-27
申请号：US12781471
申请日：2010-05-17
申请人： Mark Webster , Russell Romano , Kalpendu Shastri
发明人： Mark Webster , Russell Romano , Kalpendu Shastri
IPC分类号： G02F1/035
CPC分类号： G02F1/2257 , G02F2203/20 , G02F2203/25
摘要： A silicon-based optical modulator exhibiting improved modulation efficiency and control of “chirp” (i.e., time-varying optical phase) is provided by separately biasing a selected, first region of the modulating device (e.g., the polysilicon region, defined as the common node). In particular, the common node is biased to shift the voltage swing of the silicon-based optical modulator into its accumulation region, which exhibits a larger change in phase as a function of applied voltage (larger OMA) and improved extinction ratio. The response in the accumulation region is also relatively linear, allowing for the chirp to be more easily controlled. The electrical modulation input signal (and its inverse) are applied as separate inputs to the second region (e.g., the SOI region) of each arm of the modulator.
摘要翻译：通过分别偏置调制装置的选定的第一区域（例如，定义为共同的多晶硅区域）来提供显示出改善的调制效率和“啁啾”（即，时变光学相位）的控制的硅基光学调制器节点）。特别地，公共节点被偏置以将硅基光调制器的电压摆幅移动到其累积区域中，其随着施加电压（较大的OMA）和改善的消光比而呈现较大的相位变化。积聚区域中的响应也是相对线性的，从而可以更容易地控制啁啾声。电调制输入信号（及其反相）作为分离的输入施加到调制器的每个臂的第二区域（例如，SOI区域）。

2. 发明申请

US20130182996A1 Releasable Fiber Connector For Opto-Electronic Assemblies 有权
标题翻译：用于光电子组件的可释放光纤连接器
公开(公告)号：US20130182996A1
公开(公告)日：2013-07-18
申请号：US13737029
申请日：2013-01-09
申请人： Kalpendu Shastri , Soham Pathak , John Fangman , Vipulkumar Patel , Kishor Desai , Ravinder Kachru
发明人： Kalpendu Shastri , Soham Pathak , John Fangman , Vipulkumar Patel , Kishor Desai , Ravinder Kachru
IPC分类号： G02B6/42 , G02B6/12
CPC分类号： G02B6/42 , G02B6/12 , G02B6/3886 , G02B6/4214 , G02B6/4259 , G02B6/4292 , Y10T29/49155
摘要： An apparatus for providing releasable attachment between a fiber connector and an opto-electronic assembly, the opto-electronic assembly utilizing an interposer substrate to support a plurality of opto-electronic components that generates optical output signals and receives optical input signals. An enclosure is used to cover the interposer substrate and includes a transparent region through which the optical output and input signals pass unimpeded. A magnetic connector component is attached to the lid and positioned to surround the transparent region, with a fiber connector for supporting one or more optical fibers magnetically attached to the connector component by virtue of a metallic component contained in the fiber connector. This arrangement provides releasable attachment of the fiber connector to the enclosure in a manner where the optical output and input signals align with the optical fibers in the connector.
摘要翻译：一种用于在光纤连接器和光电子组件之间提供可释放附件的装置，所述光电组件利用插入器基板来支撑产生光输出信号并接收光输入信号的多个光电元件。外壳用于覆盖插入器基板，并且包括透明区域，光输出和输入信号通过该透明区域畅通无阻。磁性连接器部件附接到盖子并且被定位成围绕透明区域，光纤连接器用于通过光纤连接器中包含的金属部件来支撑一个或多个磁性地附接到连接器部件的光纤。这种布置以光输出和输入信号与连接器中的光纤对准的方式提供光纤连接器到外壳的可释放附接。

3. 发明申请

US20080253713A1 Optical crossover in thin silicon 有权
标题翻译：薄硅光学交叉
公开(公告)号：US20080253713A1
公开(公告)日：2008-10-16
申请号：US12157630
申请日：2008-06-12
申请人： David Piede , Prakash Gothoskar , Margaret Ghiron , Robert Keith Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine A. Yanushefski
发明人： David Piede , Prakash Gothoskar , Margaret Ghiron , Robert Keith Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine A. Yanushefski
IPC分类号： G02B6/12
CPC分类号： G02B6/12004 , G02B6/125 , G02B2006/12061 , G02B2006/12097 , G02B2006/12104 , G02B2006/12176 , G02B2006/12195
摘要： An arrangement for providing optical crossovers between waveguides formed in an SOI-based structure utilize a patterned geometry in the SOI structure that is selected to reduce the effects of crosstalk in the area where the signals overlap. Preferably, the optical signals are fixed to propagate along orthogonal directions (or are of different wavelengths) to minimize the effects of crosstalk. The geometry of the SOI structure is patterned to include predetermined tapers and/or reflecting surfaces to direct/shape the propagating optical signals. The patterned waveguide regions within the optical crossover region may be formed to include overlying polysilicon segments to further shape the propagating beams and improve the coupling efficiency of the crossover arrangement.
摘要翻译：用于在基于SOI的结构中形成的波导之间提供光学交叉的装置利用SOI结构中的图案化几何形状，其被选择以减少信号重叠的区域中串扰的影响。优选地，光信号被固定以沿着正交方向（或不同波长）传播，以最小化串扰的影响。 SOI结构的几何形状被图案化以包括预定的锥形和/或反射表面以引导/形成传播的光学信号。光学交叉区域内的图案化波导区域可以形成为包括覆盖多晶硅段，以进一步使传播波束成形，并提高交叉布置的耦合效率。

4. 发明授权

US07327911B2 Optical detector configuration and utilization as feedback control in monolithic integrated optic and electronic arrangements 有权
标题翻译：光学检测器配置和利用作为单片集成光学和电子布置中的反馈控制
公开(公告)号：US07327911B2
公开(公告)日：2008-02-05
申请号：US11253456
申请日：2005-10-19
申请人： David Piede , Kalpendu Shastri , Robert Keith Montgomery , Prakash Gothoskar , Vipulkumar Patel , Mary Nadeau
发明人： David Piede , Kalpendu Shastri , Robert Keith Montgomery , Prakash Gothoskar , Vipulkumar Patel , Mary Nadeau
IPC分类号： G02B6/12 , G02B6/10
CPC分类号： G02F1/025 , G02B6/3586 , G02B6/3588 , G02B6/3594 , G02F1/0123 , G02F2201/58 , G02F2203/21
摘要： An improvement in the reliability and lifetime of SOI-based opto-electronic systems is provided through the use of a monolithic opto-electronic feedback arrangement that monitors one or more optical signals within the opto-electronic system and provides an electrical feedback signal to adjust the operation parameters of selected optical devices. For example, input signal coupling orientation may be controlled. Alternatively, the operation of an optical modulator, switch, filter, or attenuator may be under closed-loop feedback control by virtue of the inventive monolithic feedback arrangement. The feedback arrangement may also include a calibration/look-up table, coupled to the control electronics, to provide the baseline signals used to analyze the system's performance.
摘要翻译：通过使用单片光电反馈装置来提供基于SOI的光电系统的可靠性和寿命的改进，该装置监测光电系统内的一个或多个光信号，并提供电反馈信号以调整所选光器件的运行参数。例如，可以控制输入信号耦合取向。或者，光学调制器，开关，滤波器或衰减器的操作可以通过本发明的单片反馈装置进行闭环反馈控制。反馈布置还可以包括耦合到控制电子器件的校准/查找表，以提供用于分析系统性能的基线信号。

5. 发明申请

US20060245761A1 Common electronic dispersion compensation arrangement for use with multiple optical communication channels 有权
公开(公告)号：US20060245761A1
公开(公告)日：2006-11-02
申请号：US11413675
申请日：2006-04-27
申请人： Kalpendu Shastri , Bipin Dama , David Piede
发明人： Kalpendu Shastri , Bipin Dama , David Piede
IPC分类号： H04B10/12
CPC分类号： H04L25/0228 , H04B10/66 , H04L25/025 , H04L25/03057
摘要： An electronic dispersion compensation (EDC) arrangement for a multi-channel optical receive utilizes a time division technique to “share” a common adaptive algorithm block between a plurality of N separate channels. The algorithm block embodies a specific algorithm associated with correcting/updating tap weights for the delay lines forming the equalizing elements, and a time slot assignment element is used in conjunction with the algorithm block to control the access of the various channels to the algorithm block. In situations where certain channels experience a greater degree of dispersion than others, the time slot assignment element may be configured to allot a greater number of time slots to the affected channels.

6. 发明申请

US20050289490A1 Integrated approach for design, simulation and verification of monolithic, silicon-based opto-electronic circuits 有权
标题翻译：用于单片硅基光电路的设计，仿真和验证的综合方法
公开(公告)号：US20050289490A1
公开(公告)日：2005-12-29
申请号：US11159283
申请日：2005-06-22
申请人： Kalpendu Shastri , Soham Pathak , Prakash Gothoskar , Paulius Mosinskis , Bipin Dama
发明人： Kalpendu Shastri , Soham Pathak , Prakash Gothoskar , Paulius Mosinskis , Bipin Dama
IPC分类号： G06F17/50 , G06G7/62
CPC分类号： G06F17/5036 , G06F17/5068
摘要： Computer-aided design (CAD) tools are used to perform the integrated design, verification and layout of electrical and optical components in a monolithic, silicon-based electro-optic chip. Separate top-level behavioral logic designs are prepared for the three different types of elements included within the final, silicon-based monolithic structure: (1) digital electronic integrated circuit elements; (2) analog/mixed signal electronic integrated circuit elements; and (3) opto-electronic elements (including passive and active optical elements). Once the behavioral logic design is completed, the results are combined and co-simulated. A physical layout design is developed and verified for each different type of element in the circuit. The separate physical layouts are then co-verified, to assess the properties of the overall physical design. The results of the co-simulation are compared to the results of the co-verification, with alterations made in the logic design and/or the physical layout until the desired operating parameters are obtained. Once the desired results are generated, conventional wafer-level fabrication operations are then considered to provide a final product (“tape out”).
摘要翻译：计算机辅助设计（CAD）工具用于在单片硅基电光芯片中执行电气和光学部件的集成设计，验证和布局。为最终的硅基单片结构中包含的三种不同类型的元件准备了独立的顶级行为逻辑设计：（1）数字电子集成电路元件; （2）模拟/混合信号电子集成电路元件; 和（3）光电元件（包括无源和有源光学元件）。一旦行为逻辑设计完成，结果将被合并并共同模拟。为电路中的每种不同类型的元件开发和验证物理布局设计。然后将单独的物理布局共同验证，以评估整体物理设计的属性。将共模拟的结果与协同验证的结果进行比较，在逻辑设计和/或物理布局中进行改变，直到获得所需的操作参数。一旦产生期望的结果，则常规晶圆级制造操作被认为是提供最终产品（“磁带输出”）。

7. 发明申请

US20050094939A1 Interfacing multiple wavelength sources to thin optical waveguides utilizing evanescent coupling 有权
标题翻译：使用ev逝耦合将多个波长源连接到薄光波导上
公开(公告)号：US20050094939A1
公开(公告)日：2005-05-05
申请号：US10935146
申请日：2004-09-07
申请人： Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
发明人： Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
IPC分类号： G02B20060101 , G02B6/34
CPC分类号： G02B6/12007 , G02B6/124 , G02B6/34
摘要： An arrangement for achieving and maintaining high efficiency coupling of light between a multi-wavelength optical signal and a relatively thin (e.g., sub-micron) silicon optical waveguide uses a prism coupler in association with an evanescent coupling layer. A grating structure having a period less than the wavelengths of transmission is formed in the coupling region (either formed in the silicon waveguide, evanescent coupling layer, prism coupler, or any combination thereof) so as to increase the effective refractive index “seen” by the multi-wavelength optical signal in the area where the beam exiting/entering the prism coupler intercepts the waveguide surface (referred to as the “prism coupling surface”). The period and/or duty cycle of the grating can be controlled to modify the effective refractive index profile in the direction away from the coupling region so as to reduce the effective refractive index from the relatively high value useful in multi-wavelength coupling to the lower value associated with maintaining confinement of the optical signals within the surface waveguide structure, thus reducing reflections along the transition region.
摘要翻译：用于实现和维持多波长光信号和较薄（例如亚微米）硅光波导之间的高效率耦合的布置使用与渐逝耦合层相关联的棱镜耦合器。在耦合区域（形成在硅波导，ev逝耦合层，棱镜耦合器或其任何组合中）形成具有小于透射波长的周期的光栅结构，以便通过“看到”来提高有效折射率离开/进入棱镜耦合器的光束截取波导表面（称为“棱镜耦合表面”）的区域中的多波长光信号。可以控制光栅的周期和/或占空比以在远离耦合区域的方向上改变有效折射率分布，以便将有效折射率从在多波长耦合中的有用折射率降低到较低的值与保持表面波导结构内的光信号的限制相关联的值，从而减少沿着过渡区域的反射。

8. 发明申请

US20050094938A1 External grating structures for interfacing wavelength-division-multiplexed optical sources with thin optical waveguides 有权
标题翻译：用于将波分复用光源与薄光波导接口连接的外部光栅结构
公开(公告)号：US20050094938A1
公开(公告)日：2005-05-05
申请号：US10935145
申请日：2004-09-07
申请人： Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
发明人： Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
IPC分类号： G02B20060101 , G02B6/34
CPC分类号： G02B6/12007 , G02B6/122 , G02B6/29311 , G02B6/34
摘要： A coupling arrangement for allowing multiple wavelengths to be coupled into and out of a relatively thin silicon optical waveguide layer utilizes a diffractive optical element, in the form of a volume phase grating, in combination with a prism coupling structure. The diffractive optical element is formed to comprise a predetermined modulation index sufficient to diffract the various wavelengths through angles associated with improving the coupling efficiency of each wavelength into the silicon waveguide. The diffractive optical element may be formed as a separate element, or formed as an integral part of the coupling facet of the prism coupler.
摘要翻译：用于允许多个波长耦合到相对薄的硅光波导层中的耦合布置利用体积相位光栅的形式的衍射光学元件与棱镜耦合结构组合。衍射光学元件被形成为包括足以将各种波长衍射成与提高每个波长到硅波导的耦合效率相关联的角度的预定调制指数。衍射光学元件可以形成为单独的元件，或者形成为棱镜耦合器的耦合面的整体部分。

9. 发明授权

US08929689B2 Optical modulator utilizing unary encoding and auxiliary modulator section for load balancing 有权
标题翻译：光调制器利用一元编码和辅助调制器部分进行负载平衡
公开(公告)号：US08929689B2
公开(公告)日：2015-01-06
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 , G02B6/12 , H04B10/50 , G02F1/225 , G02F1/01 , H04B10/516
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。

10. 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。

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