公开(公告)号：US20130016980A1

公开(公告)日：2013-01-17

申请号：US13180340

申请日：2011-07-11

申请人： Pranay Koka ,  Michael O. McCracken ,  Herbert D. Schwetman, JR. ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy

发明人： Pranay Koka ,  Michael O. McCracken ,  Herbert D. Schwetman, JR. ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy

IPC分类号： H04B10/12 ,  H04B10/02

CPC分类号： H04B10/801 ,  H04J14/02 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0273

摘要： In a multi-chip module (MCM), integrated circuits are coupled by optical waveguides. These integrated circuits receive optical signals from a set of tunable light sources. Moreover, a given integrated circuit includes: a transmitter that modulates at least one of the optical signals when transmitting information to at least another of the integrated circuits; and a receiver that receives at least one modulated optical signal having a given carrier wavelength associated with the given integrated circuit when receiving information from at least the other of the integrated circuits. Furthermore, control logic in the MCM provides a control signal to the set of tunable light sources to specify carrier wavelengths in the optical signals output by the set of tunable light sources, thereby defining routing of at least the one of the optical signals in the MCM during communication between at least a pair of the integrated circuits.

摘要翻译： 在多芯片模块（MCM）中，集成电路通过光波导耦合。 这些集成电路从一组可调光源接收光信号。 此外，给定的集成电路包括：发送器，当向至少另一个集成电路发送信息时，调制至少一个光信号; 以及接收器，当从至少另一个集成电路接收信息时，接收具有与给定集成电路相关联的给定载波波长的至少一个调制光信号。 此外，MCM中的控制逻辑向可调谐光源组提供控制信号，以指定由可调谐光源组输出的光信号中的载波波长，从而定义MCM中的至少一个光信号的路由 在至少一对集成电路之间的通信期间。

公开(公告)号：US20130016941A1

公开(公告)日：2013-01-17

申请号：US13180364

申请日：2011-07-11

申请人： Pranay Koka ,  Michael O. McCracken ,  Herbert D. Schwetman, JR. ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy

发明人： Pranay Koka ,  Michael O. McCracken ,  Herbert D. Schwetman, JR. ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy

IPC分类号： G02B6/12

CPC分类号： G02B6/43 ,  G02B6/4215 ,  G02B2006/12061

摘要： In a multi-chip module (MCM), integrated circuits are coupled by optical waveguides. These integrated circuits receive optical signals from a set of light sources which have fixed carrier wavelengths. Moreover, a given integrated circuit includes: a transmitter that modulates at least one of the optical signals when transmitting information to at least another of the integrated circuits; and a receiver that receives at least one modulated optical signal having one of the carrier wavelengths when receiving information from at least the other of the integrated circuits. Furthermore, the MCM includes tunable drop filters optically coupled to the optical waveguides and associated integrated circuits, wherein the tunable drop filters pass adjustable bands of wavelengths to receivers in the integrated circuits. Additionally, control logic in the MCM provides a control signal to the tunable drop filters to specify the adjustable bands of wavelengths.

摘要翻译： 在多芯片模块（MCM）中，集成电路通过光波导耦合。 这些集成电路从具有固定载波波长的一组光源接收光信号。 此外，给定的集成电路包括：发送器，当向至少另一个集成电路发送信息时，调制至少一个光信号; 以及接收器，当从至少另一个集成电路接收信息时，接收具有载波波长之一的至少一个调制光信号。 此外，MCM包括光耦合到光波导和相关联的集成电路的可调滴式滤波器，其中可调滴式滤波器将可调节的波段传送到集成电路中的接收器。 另外，MCM中的控制逻辑为可调降滤波器提供了一个控制信号，以指定波长的可调波段。

公开(公告)号：US20130016423A1

公开(公告)日：2013-01-17

申请号：US13182227

申请日：2011-07-13

申请人： Xuezhe Zheng ,  Ashok V. Krishnamoorthy

发明人： Xuezhe Zheng ,  Ashok V. Krishnamoorthy

IPC分类号： H01S5/20

CPC分类号： H01S5/142 ,  H01S3/1055 ,  H01S3/106 ,  H01S5/1007 ,  H01S5/1032

摘要： A laser source includes a semiconductor optical amplifier (SOA) as a gain medium that receives and amplifies an optical signal characterized by at least a wavelength associated with a lasing mode of the laser source. This laser source includes a first optical waveguide and a second optical waveguide optically coupled to the SOA. Furthermore, a wavelength-selective reflector is optically coupled to the first optical waveguide and the second optical waveguide, where a closed loop defined by the SOA, the first optical waveguide, the wavelength-selective reflector and the second optical waveguide defines a cavity of the laser source.

摘要翻译： 激光源包括作为增益介质的半导体光放大器（SOA），其接收和放大以与激光源的激光模式相关联的至少一个波长为特征的光信号。 该激光源包括光耦合到SOA的第一光波导和第二光波导。 此外，波长选择性反射器光耦合到第一光波导和第二光波导，其中由SOA，第一光波导，波长选择反射器和第二光波导限定的闭环限定了 激光源。

公开(公告)号：US20120321251A1

公开(公告)日：2012-12-20

申请号：US13566598

申请日：2012-08-03

申请人： Jin Yao ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy ,  John E. Cunningham

发明人： Jin Yao ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy ,  John E. Cunningham

IPC分类号： G02B6/26

CPC分类号： G02B6/13 ,  G02B6/12002

摘要： A multi-chip module (MCM) includes a stack of chips that are coupled using optical interconnects. On a first surface of a middle chip in the stack, there are: a first optical coupler, an optical waveguide, which is coupled to the first optical coupler, and a second optical coupler, which is coupled to the optical waveguide. The first optical coupler redirects an optical signal from the optical waveguide to a first direction (which is not in the plane of the first surface), or from the first direction to the optical waveguide. The second optical coupler redirects the optical signal from the optical waveguide to a second direction (which is not in the plane of the first surface), or from the second direction to the optical waveguide. An optical path associated with the second direction passes through an opening in a substrate in the middle chip.

摘要翻译： 多芯片模块（MCM）包括使用光学互连耦合的一堆芯片。 在堆叠中的中间芯片的第一表面上，存在：耦合到第一光耦合器的第一光耦合器，光波导和耦合到光波导的第二光耦合器。 第一光学耦合器将来自光波导的光信号重定向到第一方向（其不在第一表面的平面中）或从第一方向到光波导。 第二光耦合器将来自光波导的光信号重定向到第二方向（其不在第一表面的平面中）或从第二方向到光波导。 与第二方向相关联的光路通过中间芯片中的基板的开口。

公开(公告)号：US08285140B2

公开(公告)日：2012-10-09

申请号：US12723591

申请日：2010-03-12

申请人： Michael Oliver McCracken ,  Pranay Koka ,  Herbert Dewitt Schwetman, Jr. ,  Xuezhe Zheng ,  Ashok Krishnamoorthy

发明人： Michael Oliver McCracken ,  Pranay Koka ,  Herbert Dewitt Schwetman, Jr. ,  Xuezhe Zheng ,  Ashok Krishnamoorthy

IPC分类号： H04J14/00

CPC分类号： H04Q11/0062 ,  H04Q11/0005 ,  H04Q2011/005 ,  H04Q2011/0058 ,  H04Q2011/0064

摘要： A system including first and second sending nodes, a horizontal optical data link (ODL) having optical signals propagating in opposite directions in first and second waveguide segments, a vertical ODL having optical signals propagating in the same direction throughout third and fourth waveguide segments, a first optical output switch operatively connecting the first sending node and the first waveguide segment and configured to switch first data item onto the first waveguide segment during a first timeslot, a second optical output switch operatively connecting the second sending node and the second waveguide segment and configured to switch second data item onto the second waveguide segment during a second timeslot, and an optical coupler pair operatively connecting the first and second waveguide segments to the third and fourth waveguide segments, respectively, and redirecting the first and the second data items from the horizontal to the vertical ODL.

摘要翻译： 一种包括第一和第二发送节点的系统，具有在第一和第二波导段中以相反方向传播的光信号的水平光数据链路（ODL），具有沿相同方向在第三和第四波导段传播的光信号的垂直ODL， 第一光输出开关，其可操作地连接第一发送节点和第一波导段，并且被配置为在第一时隙期间将第一数据项切换到第一波导段上;第二光输出开关，可操作地连接第二发送节点和第二波导段， 在第二时隙期间将第二数据项切换到第二波导段上，以及光耦合器对，将第一和第二波导段分别可操作地连接到第三和第四波导段，并将第一和第二数据项从水平方向重定向 到垂直ODL。

公开(公告)号：US20120237155A1

公开(公告)日：2012-09-20

申请号：US13048250

申请日：2011-03-15

申请人： Xuezhe Zheng ,  Ashok V. Krishnamoorthy ,  Yeshaiahu Fainman

发明人： Xuezhe Zheng ,  Ashok V. Krishnamoorthy ,  Yeshaiahu Fainman

IPC分类号： G02F1/035 ,  G02B6/28

CPC分类号： G02B6/12007 ,  G02B6/29382 ,  G02B2006/12147 ,  H04J14/0201

摘要： An optical multiplexer/demultiplexer is described. In this optical multiplexer/demultiplexer, multiple coupled-waveguide grating devices are optically coupled to a bus optical waveguide. A given coupled-waveguide grating device has a band-pass filter characteristic that encompasses multiple optical channels, thereby providing coarse optical filtering. Moreover, the optical multiplexer/demultiplexer includes multiple add/drop filters (such as ring resonators) that optically couple to the coupled-waveguide grating devices. A given add/drop filter has a filter bandwidth corresponding to a given optical channel, thereby providing fine optical filtering. Furthermore, the band-pass filter characteristic of the given coupled-waveguide grating device is approximately equal to or less than a free spectral range (FSR) of the given add/drop filter.

摘要翻译： 描述了光复用器/解复用器。 在该光复用器/解复用器中，多个耦合波导光栅器件光耦合到总线光波导。 给定的耦合波导光栅器件具有包含多个光通道的带通滤波器特性，由此提供粗略的光学滤波。 此外，光复用器/解复用器包括光耦合到耦合波导光栅器件的多个加/减滤波器（例如环形谐振器）。 给定的分插滤波器具有对应于给定光信道的滤波器带宽，从而提供精细的光学滤波。 此外，给定耦合波导光栅装置的带通滤波器特性近似等于或小于给定加/减滤波器的自由光谱范围（FSR）。

公开(公告)号：US20120177318A1

公开(公告)日：2012-07-12

申请号：US12986062

申请日：2011-01-06

申请人： Xuezhe Zheng ,  John E. Cunningham ,  Ashok V. Krishnamoorthy

发明人： Xuezhe Zheng ,  John E. Cunningham ,  Ashok V. Krishnamoorthy

IPC分类号： G02F1/01

CPC分类号： G02F1/025 ,  G02F2001/0157

摘要： During operation of an electro-absorption modulator, an optical signal is conveyed, using an optical waveguide in the electro-absorption modulator, to a semiconductor layer that substantially fills a gap between two portions of the optical waveguide. Then, the optical signal is electro-absorption modulated by selectively applying a voltage to electrodes that produces an electric field, approximately perpendicular to the midline of the optical waveguide, in the semiconductor layer. These electrodes are coupled to the edges of the semiconductor layer at the periphery along the width of the semiconductor layer by intervening layers. Furthermore, the intervening layers include a material that has a lower index of refraction than the semiconductor layer, and a lower optical absorption than the electrodes.

摘要翻译： 在电吸收调制器的操作期间，使用电吸收调制器中的光波导将光信号传送到基本上填充光波导的两个部分之间的间隙的半导体层。 然后，通过选择性地向在半导体层中产生大致垂直于光波导的中线的电场的电极施加电压来对光信号进行电吸收调制。 这些电极通过中间层沿半导体层的宽度在周边连接到半导体层的边缘。 此外，中间层包括具有比半导体层低的折射率的材料，并且具有比电极更低的光学吸收。

公开(公告)号：US08150223B2

公开(公告)日：2012-04-03

申请号：US12415882

申请日：2009-03-31

申请人： Guoliang Li ,  Ashok V. Krishnamoorthy ,  John E. Cunningham ,  Ivan Shubin ,  Xuezhe Zheng

发明人： Guoliang Li ,  Ashok V. Krishnamoorthy ,  John E. Cunningham ,  Ivan Shubin ,  Xuezhe Zheng

IPC分类号： G02B6/26

CPC分类号： G02B6/12007 ,  G02B2006/12061 ,  G02F1/011 ,  G02F1/0147 ,  G02F2202/10

摘要： Embodiments of an optical device, an array of optical devices, and a technique for fabricating the optical device or the array are described. This optical device is implemented on a substrate (such as silicon), and includes a thermally tunable optical waveguide with a high thermal resistance to the surrounding external environment and a low thermal resistance to a localized heater. In particular, the thermal resistances associated with thermal dissipation paths from a heater in the optical device to an external environment via electrodes and via the substrate are increased, while the thermal resistance between the optical waveguide and the heater is decreased.

摘要翻译： 描述了光学器件，光学器件阵列以及用于制造光学器件或阵列的技术的实施例。 该光学器件实现在基板（例如硅）上，并且包括具有对周围外部环境的高耐热性和对局部加热器的低热阻的热可调谐光波导。 特别地，与通过电极和经由基板的从光学装置中的加热器到外部环境的热耗散路径相关联的热阻增加，同时光波导和加热器之间的热阻降低。

公开(公告)号：US08131119B2

公开(公告)日：2012-03-06

申请号：US12845035

申请日：2010-07-28

申请人： John E. Cunningham ,  Ashok V. Krishnamoorthy ,  Ivan Shubin ,  Guoliang Li ,  Xuezhe Zheng

发明人： John E. Cunningham ,  Ashok V. Krishnamoorthy ,  Ivan Shubin ,  Guoliang Li ,  Xuezhe Zheng

IPC分类号： G02B6/10 ,  G02B6/12 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02F1/025 ,  G02F1/0147 ,  G02F1/3133 ,  H01L2224/48091 ,  H01L2224/48472 ,  Y10T29/49124 ,  H01L2924/00014

摘要： Embodiments of an optical device, an array of optical devices, and a technique for fabricating the optical device or the array are described. This optical device is implemented on a substrate (such as silicon), and includes a thermally tunable optical waveguide that has good thermal isolation from its surroundings. In particular, a portion of a semiconductor in the optical device, which includes the optical waveguide, is free standing above a gap between the semiconductor layer and the substrate. By reducing the thermal coupling between the optical waveguide and the external environment, the optical device can be thermally tuned with significantly less power consumption.

摘要翻译： 描述了光学器件，光学器件阵列以及用于制造光学器件或阵列的技术的实施例。 该光学器件实现在基板（例如硅）上，并且包括具有与其周围环境良好热隔离的热可调谐光波导。 特别地，包括光波导的光学器件中的半导体的一部分自由地位于半导体层和衬底之间的间隙之上。 通过减少光波导和外部环境之间的热耦合，可以以显着更少的功耗来热调谐光学器件。

公开(公告)号：US20110310917A1

公开(公告)日：2011-12-22

申请号：US12820833

申请日：2010-06-22

申请人： Ashok V. Krishnamoorthy ,  Xuezhe Zheng

发明人： Ashok V. Krishnamoorthy ,  Xuezhe Zheng

IPC分类号： H01S3/10

CPC分类号： H01S5/1096 ,  H01S5/0078 ,  H01S5/0085 ,  H01S5/0287 ,  H01S5/06821 ,  H04B10/506

摘要： In a multiple-wavelength laser source, a multiple-mode laser outputs a set of wavelengths in a range of wavelengths onto an optical waveguide, where a spacing between adjacent wavelengths in the set of wavelengths is smaller than a width of channels in an optical link. Furthermore, a set of ring-resonator filters in the multiple-wavelength laser source, which are optically coupled to the optical waveguide, output corresponding subsets of the set of wavelengths for use in the optical link based on free spectral ranges and quality factors of the set of ring-resonator filters. These subsets may include one or more groups of wavelengths, with another spacing between adjacent groups of wavelengths that is larger than the width of the given channel in the optical link. In addition, the one or more groups of wavelengths may include one or more wavelengths, with the spacing between adjacent wavelengths in the given group of wavelengths.

摘要翻译： 在多波长激光源中，多模激光器将波长范围内的一组波长输出到光波导上，其中波长组中的相邻波长之间的间隔小于光链路中的信道宽度 。 此外，光学耦合到光波导的多波长激光源中的一组环形谐振器滤波器基于自由光谱范围和质量因子输出用于光链路的该组波长的相应子集 环形谐振器滤波器组。 这些子集可以包括一组或多组波长，相邻波长组之间的另一个间隔大于光链路中给定信道的宽度。 此外，一组或多组波长可以包括一个或多个波长，在给定波长组中的相邻波长之间的间隔。