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21. 发明授权

US08755655B2 Edge-coupled optical proximity communication 有权
标题翻译：边缘耦合光学邻近通信
公开(公告)号：US08755655B2
公开(公告)日：2014-06-17
申请号：US12564701
申请日：2009-09-22
申请人： Ashok V. Krishnamoorthy , Xuezhe Zheng
发明人： Ashok V. Krishnamoorthy , Xuezhe Zheng
IPC分类号： G02B6/36 , G02B6/30 , G02B6/42 , G02B6/43
CPC分类号： G02B6/423 , G02B6/12 , G02B6/30 , G02B6/36 , G02B6/42 , G02B6/4228 , G02B6/4231 , G02B6/43 , H04B10/803
摘要： An optical module is described. This optical module includes at least two optical devices that communicate with each other using edge-to-edge optical coupling of an optical signal between optical components in the two optical devices. Note that the edge-to-edge optical coupling may occur without mode converters at edges of either of the optical devices. Furthermore, the edge-to-edge optical coupling may be facilitated by an alignment substrate, which is mechanically coupled to the two optical devices. This alignment substrate aligns the edges of the two optical devices so that they are approximately parallel to each other, and aligns the optical components in the two optical devices.
摘要翻译：描述光学模块。该光学模块包括使用两个光学装置中的光学部件之间的光信号的边缘到边缘光耦合来彼此通信的至少两个光学装置。注意，边缘到边缘光耦合可能在任何光学器件的边缘处没有模式转换器。此外，边缘到边缘光耦合可以通过机械耦合到两个光学器件的对准衬底来促进。该对准衬底对准两个光学器件的边缘，使得它们彼此近似平行，并对准两个光学器件中的光学部件。

22. 发明授权

US08639069B1 Wavelength dependent optical switch 有权
标题翻译：波长依赖光开关
公开(公告)号：US08639069B1
公开(公告)日：2014-01-28
申请号：US10880382
申请日：2004-06-28
申请人： Roger Jonathan Helkey , John Edward Bowers , Xuezhe Zheng , David Welsh , Robert Anderson , Olivier Jerphagnon
发明人： Roger Jonathan Helkey , John Edward Bowers , Xuezhe Zheng , David Welsh , Robert Anderson , Olivier Jerphagnon
IPC分类号： G02B6/26 , G02B6/28 , G02B6/34 , G02B6/42 , H04J14/00 , H04B10/00
CPC分类号： H04Q11/0005 , G02B6/29367 , G02B6/3518 , G02B6/3532 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/003 , H04Q2011/0075
摘要： A wavelength-selective optical switch for switching arbitrary wavelengths between optical fibers in mesh networks, using interference filters for separating optical wavelengths, and two-dimensional arrays of micromirrors for switching. Broadband switch inputs and outputs are provided for adding and dropping arbitrary wavelengths at each node of the network. A two-stage multiplexer and two-stage demultiplexer are provided to simplify the free-space demultiplexer and multiplexer. Mechanisms are provided that allows full non-blocking functionality in the presence of finite yield of the micromirror arrays.
摘要翻译：用于在网状网络中的光纤之间切换任意波长的波长选择性光开关，使用用于分离光波长的干涉滤光器和用于切换的二维微镜阵列。提供宽带开关输入和输出，用于在网络的每个节点处添加和删除任意波长。提供两级多路复用器和两级解复用器来简化自由空间解复用器和多路复用器。提供了在存在微镜阵列的有限产量的情况下允许完全非阻塞功能的机制。

23. 发明申请

US20120207479A1 OPTICAL DEVICE WITH REDUCED THERMAL TUNING ENERGY 有权
标题翻译：具有减少热调节能的光学装置
公开(公告)号：US20120207479A1
公开(公告)日：2012-08-16
申请号：US13156144
申请日：2011-06-08
申请人： Ashok V. Krishnamoorthy , Xuezhe Zheng , Guoliang Li , John E. Cunningham
发明人： Ashok V. Krishnamoorthy , Xuezhe Zheng , Guoliang Li , John E. Cunningham
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , G02F1/0147 , G02F1/025 , G02F2203/15 , H04B10/506 , H04B10/572 , H04J14/0212
摘要： An optical device that includes multiple optical modulators having target operating wavelengths that are distributed over a band of wavelengths and actual operating wavelengths is described. For example, the target operating wavelengths of adjacent optical modulators may be separated by a wavelength increment. Moreover, because of differences between the actual operating wavelengths and the target operating wavelengths of the optical modulators, tuning elements may be used to tune the optical modulators so that the actual operating wavelengths match corresponding carrier wavelengths in a set of optical signals. Furthermore, control logic in the optical device may assign the optical modulators to the corresponding carrier wavelengths based at least on differences between the carrier wavelengths and the actual operating wavelengths, thereby reducing an average tuning energy associated with the tuning elements.
摘要翻译：描述了一种光学装置，其包括具有分布在波长带和实际工作波长上的目标工作波长的多个光调制器。例如，相邻光调制器的目标工作波长可以被波长增量分开。此外，由于实际工作波长与光调制器的目标工作波长之间的差异，调谐元件可用于调谐光调制器，使得实际工作波长匹配一组光信号中的对应载波波长。此外，光学装置中的控制逻辑可以至少基于载波波长和实际工作波长之间的差异将光调制器分配给相应的载波波长，从而减少与调谐元件相关联的平均调谐能量。

24. 发明申请

US20120207424A1 OPTICAL MODULATOR WITH THREE-DIMENSIONAL WAVEGUIDE TAPERS 有权
标题翻译：具有三维波导光栅的光学调制器
公开(公告)号：US20120207424A1
公开(公告)日：2012-08-16
申请号：US12816935
申请日：2010-06-16
申请人： Xuezhe Zheng , John E. Cunningham , Ashok V. Krishnamoorthy , Dazeng Feng , Mehdi Asghari
发明人： Xuezhe Zheng , John E. Cunningham , Ashok V. Krishnamoorthy , Dazeng Feng , Mehdi Asghari
IPC分类号： G02F1/035
CPC分类号： G02B6/1228 , G02F1/01708 , G02F2001/0157
摘要： An integrated circuit that includes an optical waveguide defined in a semiconductor layer is described. In this integrated circuit, light is coupled between the optical waveguide and an optical modulator, which is disposed on the optical waveguide, using 3-dimensional (3-D) taper structures that are proximate to the ends of the optical modulator. The cross-sectional areas of these 3-D taper structures transition, over a distance, from that of the optical waveguide (distal from the optical modulator) to that of optical modulator (proximate to the ends of the optical modulator). In this way, a spatial extent of an optical mode in the optical waveguide and a spatial extent of the optical mode in the optical modulator may be approximately matched to reduce the optical loss when the light is coupled to or from the optical modulator.
摘要翻译：描述了包括在半导体层中限定的光波导的集成电路。在该集成电路中，使用靠近光调制器的端部的3维（3-D）锥形结构将光耦合在光波导和设置在光波导上的光调制器之间。这些3-D锥形结构的横截面积在一段距离上与光波导（远离光调制器）的横截面面积转换到光调制器（近于光调制器的端部）的截面面积。以这种方式，光学波导中的光学模式的空间范围和光学调制器中的光学模式的空间范围可以近似匹配，以减少当光耦合到光学调制器时的光学损耗。

25. 发明授权

US08204385B2 Optical device with reduced thermal tuning energy 有权
标题翻译：具有减少热调谐能量的光学器件
公开(公告)号：US08204385B2
公开(公告)日：2012-06-19
申请号：US12493509
申请日：2009-06-29
申请人： Xuezhe Zheng , Ashok V. Krishnamoorthy , John E. Cunningham , Guoliang Li
发明人： Xuezhe Zheng , Ashok V. Krishnamoorthy , John E. Cunningham , Guoliang Li
IPC分类号： H04B10/12 , H04J14/02
CPC分类号： G02F1/025 , G02F1/0147 , G02F2203/05 , G02F2203/15 , H04B10/506 , H04B10/572 , H04J14/02
摘要： An optical device that includes multiple optical modulators having actual operating wavelengths at a given temperature is described. Because of differences between the actual operating wavelengths and target operating wavelengths of the optical modulators, heating elements may be used to thermally tune the optical modulators so that the actual operating wavelengths match corresponding carrier wavelengths in a set of optical signals. Furthermore, control logic in the optical device may assign the optical modulators to the corresponding carrier wavelengths based at least on differences between the carrier wavelengths and the actual operating wavelengths, thereby reducing an average thermal tuning energy associated with the heating elements.
摘要翻译：描述了包括在给定温度下具有实际工作波长的多个光调制器的光学装置。由于光调制器的实际工作波长和目标工作波长之间的差异，可以使用加热元件来热调谐光学调制器，使得实际工作波长匹配一组光信号中的相应载波波长。此外，光学装置中的控制逻辑可以至少基于载波波长和实际工作波长之间的差异将光调制器分配给相应的载波波长，由此降低与加热元件相关联的平均热调谐能量。

26. 发明授权

US08014636B2 Electrical contacts on top of waveguide structures for efficient optical modulation in silicon photonic devices 有权
标题翻译：波导结构顶部的电触点用于硅光子器件中的有效光调制
公开(公告)号：US08014636B2
公开(公告)日：2011-09-06
申请号：US12389608
申请日：2009-02-20
申请人： Ivan Shubin , Guoliang Li , John E. Cunningham , Ashok Krishnamoorthy , Xuezhe Zheng
发明人： Ivan Shubin , Guoliang Li , John E. Cunningham , Ashok Krishnamoorthy , Xuezhe Zheng
IPC分类号： G02F1/035 , H01L29/06 , H04B10/04
CPC分类号： G02F1/025 , B82Y20/00 , G02F1/01708 , G02F2001/0157 , G02F2201/12 , Y10S977/742
摘要： A phase modulation waveguide structure includes one of a semiconductor and a semiconductor-on-insulator substrate, a doped semiconductor layer formed over the one of a semiconductor and a semiconductor-on-insulator substrate, the doped semiconductor portion including a waveguide rib protruding from a surface thereof not in contact with the one of a semiconductor and a semiconductor-on-insulator substrate, and an electrical contact on top of the waveguide rib. The electrical contact is formed of a material with an optical refractive index close to that of a surrounding oxide layer that surrounds the waveguide rib and the electrical contact and lower than the optical refractive index of the doped semiconductor layer. During propagation of an optical mode within the waveguide structure, the electrical contact isolates the optical mode between the doped semiconductor layer and a metal electrode contact on top of the electrical contact.
摘要翻译：相位调制波导结构包括半导体和绝缘体上半导体衬底之一，在半导体和绝缘体上半导体衬底之上形成的掺杂半导体层，掺杂半导体部分包括从其表面不与半导体和绝缘体上半导体衬底之一接触，并且在波导肋的顶部上的电接触。电接触由光学折射率接近包围波导肋和电接触并且低于掺杂半导体层的光折射率的周围氧化物层的材料形成。在波导结构内的光学模式的传播期间，电接触将掺杂半导体层和电接触顶部上的金属电极接触之间的光学模式隔离开。

27. 发明申请

US20100266295A1 OPTICAL-SIGNAL-PATH ROUTING IN A MULTI-CHIP SYSTEM 有权
标题翻译：多芯片系统中的光信号路径路由
公开(公告)号：US20100266295A1
公开(公告)日：2010-10-21
申请号：US11962415
申请日：2007-12-21
申请人： Xuezhe Zheng , Ashok V. Krishnamoorthy , John E. Cunningham
发明人： Xuezhe Zheng , Ashok V. Krishnamoorthy , John E. Cunningham
IPC分类号： H04B10/12
CPC分类号： H04J14/02 , H04B10/801 , H04J14/0227 , H04Q11/0062 , H04Q2011/0096
摘要： Embodiments of a system are described. This system includes an array of chip modules (CMs) that are configured to communicate data signals with each other via optical communication. In a given CM module, optical signal paths, such as waveguides, are routed in the same way as in the other CMs in the array. In this way, a common optical design in the CMs may be used in the system to prevent data conflicts during the optical communication.
摘要翻译：描述系统的实施例。该系统包括被配置为经由光通信彼此通信数据信号的芯片模块（CM）阵列。在给定的CM模块中，诸如波导的光信号路径以与阵列中的其他CM相同的方式路由。以这种方式，可以在系统中使用CM中的普通光学设计来防止光通信期间的数据冲突。

28. 发明授权

US06904195B2 Optical switch with adjustable optical loss 失效
公开(公告)号：US06904195B2
公开(公告)日：2005-06-07
申请号：US10616244
申请日：2003-07-08
申请人： John Edward Bowers , Shifu Yuan , Roger Helkey , Xuezhe Zheng , James R. Sechrist
发明人： John Edward Bowers , Shifu Yuan , Roger Helkey , Xuezhe Zheng , James R. Sechrist
IPC分类号： G02B6/35 , H04Q11/00 , G08B6/26
CPC分类号： G02B6/352 , G02B6/3518 , G02B6/3556 , G02B6/356 , G02B6/357 , G02B6/3588 , G02B6/3594 , H04Q11/0005 , H04Q2011/003 , H04Q2011/0039 , H04Q2011/0049
摘要： An apparatus and method of controlling optical loss in an optical switch to equalize optical power or loss in a group of optical signals in an optical transmission system relatively insensitive to mechanical vibration. In one embodiment a group of optical signals is input into an optical switch and selected optical signals are variably attenuated using synchronized control to two mirrors in order to provide more uniform power distribution among the group of optical signals without enhancing vibration sensitivity of the optical switch.

29. 发明授权

US06597825B1 Optical tap for an optical switch 有权
标题翻译：光学开关的光学抽头
公开(公告)号：US06597825B1
公开(公告)日：2003-07-22
申请号：US10016314
申请日：2001-10-30
申请人： Shifu Yuan , Xuezhe Zheng
发明人： Shifu Yuan , Xuezhe Zheng
IPC分类号： G02B626
CPC分类号： G02B6/3512 , G02B6/2817 , G02B6/3556 , G02B6/3582
摘要： An all-optical switch includes an array of input optical fibers and an array of output optical fibers. A rhomboidal prism beam splitter is positioned in operative relationship with the array of input fibers such that when an array of optical beams is propagated from the array of input optical fibers, the beam splitter splits the array of optical beams into a signal path and a tap path. The rhomboidal prism beam splitter includes a partial internal reflection (PIR) surface and a total internal reflection (TIR) surface. The PIR surface and the TIR surface cooperate to split the array of optical beams into the signal path and the tap path such that the signal path is substantially parallel to the tap path upon exiting the beam splitter.
摘要翻译：全光开关包括输入光纤阵列和输出光纤阵列。菱形棱镜分束器与输入光纤阵列定位成操作关系，使得当光束阵列从输入光纤阵列传播时，分束器将光束阵列分成信号路径和水龙头路径。菱形棱镜分束器包括部分内反射（PIR）表面和全内反射（TIR）表面。 PIR表面和TIR表面配合以将光束阵列分裂成信号路径和抽头路径，使得当离开分束器时信号路径基本上平行于抽头路径。

30. 发明申请

US20130315526A1 SINGLE-LAYER FULL-MESH, POINT-TO-POINT NETWORK 有权
标题翻译：单层全网，点对点网络
公开(公告)号：US20130315526A1
公开(公告)日：2013-11-28
申请号：US13479109
申请日：2012-05-23
申请人： Ashok V. Krishnamoorthy , Xuezhe Zheng
发明人： Ashok V. Krishnamoorthy , Xuezhe Zheng
IPC分类号： G02B6/26 , G02B6/34 , G02B6/12
CPC分类号： G02B6/12009 , G02B6/29326 , G02B6/29328 , G02B6/2938 , G02B6/43 , G02B2006/12107
摘要： An MCM may include a single optical routing layer that provides point-to-point connectivity among N chips in the MCM, such as all-to-all connectivity or full-mesh point-to-point connectivity. Moreover, the optical routing layer may include: N optical waveguides optically coupled to the N chips and a cyclic de-multiplexer, optically coupled to the N optical waveguides, that routes optical signals among the N optical waveguides without optical-waveguide crossing in the optical routing layer. For example, the cyclic de-multiplexer may include: an array-waveguide-grating (AWG) wavelength router and/or an echelle-grating wavelength router.
摘要翻译： MCM可以包括在MCM中的N个芯片之间提供点对点连接的单个光路由层，例如全对连接或全网点对点连接。此外，光路由层可以包括：光学耦合到N个芯片的N个光波导和光学耦合到N个光波导的循环去多路复用器，其在N个光波导中路由光信号，而在光学器件中没有光波导交叉路由层。例如，循环去多路复用器可以包括：阵列波导光栅（AWG）波长路由器和/或梯形光栅波长路由器。

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