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31. 发明申请

US20100202728A1 SURFACE-PLASMON-ASSISTED OPTICAL FREQUENCY CONVERSION 有权
标题翻译：表面等离子体辅助光学频率转换
公开(公告)号：US20100202728A1
公开(公告)日：2010-08-12
申请号：US12368792
申请日：2009-02-10
申请人： Girsh Blumberg , Aref Chowdhury
发明人： Girsh Blumberg , Aref Chowdhury
IPC分类号： G02B6/12
CPC分类号： G02B6/1226 , B82Y20/00 , G02F1/0356 , G02F1/3532 , G02F1/3534 , G02F1/3536 , G02F2001/3548 , G02F2201/066 , G02F2201/127 , G02F2202/20 , G02F2203/10
摘要： An optical frequency converter that uses a nonlinear optical process to transfer energy between a surface-plasmon (SP) wave that is guided along an electrically conducting strip and a light beam that is guided along an optical waveguide whose core is adjacent to the electrically conducting strip. The optical frequency converter has a periodic structure that spatially modulates the nonlinear susceptibility of the waveguide core with a spatial period that is related to a momentum mismatch in the nonlinear optical process. The spatial modulation provides quasi-phase matching for the SP wave and the light beam and enables efficient energy transfer between them.
摘要翻译：一种光学频率转换器，其使用非线性光学过程在沿着导电条带被引导的表面等离子体（SP）波之间传递能量，以及沿着其与所述导电条相邻的光波导被引导的光束。光频变换器具有周期性结构，其空间调制波导芯的非线性磁化率与非线性光学过程中的动量失配相关的空间周期。空间调制为SP波和光束提供准相位匹配，并实现它们之间的有效能量传递。

32. 发明申请

US20090139957A1 Group III-Nitride layers with patterned surfaces 有权
标题翻译：具有图案化表面的III-III族氮化物层
公开(公告)号：US20090139957A1
公开(公告)日：2009-06-04
申请号：US12315202
申请日：2008-12-01
申请人： Aref Chowdhury , Hock Ng , Richart Elliott Slusher
发明人： Aref Chowdhury , Hock Ng , Richart Elliott Slusher
IPC分类号： B44C1/22
CPC分类号： B82Y20/00 , B81B1/00 , G02B6/1225 , G02B2006/12035 , H01J1/304 , H01J3/022 , H01J9/025 , H01L21/0254 , H01L21/02639 , H01L21/30612
摘要： A fabrication method produces a mechanically patterned layer of group III-nitride. The method includes providing a crystalline substrate and forming a first layer of a first group III-nitride on a planar surface of the substrate. The first layer has a single polarity and also has a pattern of holes or trenches that expose a portion of the substrate. The method includes then, epitaxially growing a second layer of a second group III-nitride over the first layer and the exposed portion of substrate. The first and second group III-nitrides have different alloy compositions. The method also includes subjecting the second layer to an aqueous solution of base to mechanically pattern the second layer.
摘要翻译：制造方法产生III族氮化物的机械图案化层。该方法包括提供晶体衬底并在衬底的平坦表面上形成第一III族氮化物的第一层。第一层具有单一极性，并且还具有露出基板的一部分的孔或沟槽的图案。该方法包括在第一层和衬底的暴露部分上外延生长第二III族氮化物层的第二层。第一和第二III族氮化物具有不同的合金组成。该方法还包括使第二层经受基底水溶液以机械地图形化第二层。

33. 发明申请

US20070263278A1 Nonlinear optical devices based on metamaterials 有权
标题翻译：基于超材料的非线性光学器件
公开(公告)号：US20070263278A1
公开(公告)日：2007-11-15
申请号：US11432803
申请日：2006-05-13
申请人： Aref Chowdhury , John Tataronis
发明人： Aref Chowdhury , John Tataronis
IPC分类号： G02F1/35 , G02F2/02
CPC分类号： G02F1/3534 , G02F1/365 , G02F2202/30
摘要： An apparatus includes one or more optical couplers, an optical medium, and an optical pump source. The optical medium behaves as a negative refractive index material over a frequency range. The one or more optical couplers are configured to provide first and second optical inputs to the optical medium and to provide an optical output from the optical medium. The optical pump source is coupled by one of the one or more optical couplers to deliver pump light to the optical medium.
摘要翻译：一种装置包括一个或多个光耦合器，光介质和光泵源。光学介质在频率范围内表现为负折射率材料。一个或多个光耦合器被配置为向光介质提供第一和第二光输入并提供来自光介质的光输出。光泵浦源由一个或多个光耦合器中的一个耦合，以将泵浦光输送到光学介质。

34. 发明申请

US20070041733A1 Polarization-diverse negative-refractive-index apparatus and methods 审中-公开
$Polarization-diverse negative-refractive-index apparatus and methods$
标题翻译：极化多样的负折射率仪器和方法
公开(公告)号：US20070041733A1
公开(公告)日：2007-02-22
申请号：US11586290
申请日：2006-10-25
申请人： Aref Chowdhury
发明人： Aref Chowdhury
IPC分类号： H04B10/00
CPC分类号： H04J14/02 , G02B1/007 , G02B6/2746 , G02B27/283 , H04J14/06
摘要： A polarization-diverse apparatus includes a polarization-sensitive negative-refractive-index (NRI) medium and a polarization splitter. The polarization splitter is configured to receive an electromagnetic input signal, to direct a first polarization component of the received input signal to a first path segment, and to direct a second polarization component of the received input signal to a separate second path segment. The medium has first and second signal ports. The first port is at an end of the first path segment. The second port is at an end of the second path segment. The medium outputs an altered signal from one of the ports in response to receiving the input signal at the other of the ports. In a preferred embodiment, the medium has an internal optical axis, and the polarizations of the first and second components are oriented relative to that axis so that effect of altering the input signal is enhanced. The two path segments may include polarization-maintaining waveguides.
摘要翻译：极化多样化装置包括偏振敏感负折射率（NRI）介质和偏振分离器。偏振分离器被配置为接收电磁输入信号，以将接收到的输入信号的第一偏振分量引导到第一路径段，并将接收到的输入信号的第二偏振分量引导到单独的第二路径段。介质具有第一和第二信号端口。第一个端口位于第一个路径段的末尾。第二个端口位于第二个路径段的末尾。响应于在另一个端口处接收到输入信号，介质从一个端口输出改变的信号。在优选实施例中，介质具有内部光轴，并且第一和第二部件的极化相对于该轴线定向，从而增强了改变输入信号的效果。两个路径段可以包括偏振保持波导。

35. 发明申请

US20060269292A1 Reducing crosstalk in optical wavelength converters 有权
公开(公告)号：US20060269292A1
公开(公告)日：2006-11-30
申请号：US11138007
申请日：2005-05-26
申请人： Aref Chowdhury , Gregory Raybon
发明人： Aref Chowdhury , Gregory Raybon
IPC分类号： H04B10/12
CPC分类号： H04B10/2513
摘要： An optical fiber transmission system includes a series of optical fiber transmission spans and one or more all-optical signal processors. The optical fiber transmission spans are connected to form an optical communication path. Each all-optical signal processor directly connects a corresponding adjacent pair of the spans. Each all-optical signal processor includes an optical wavelength converter having input and output ports and a dispersion adjustment module connected to the input port of the optical wavelength converter of the same processor. The dispersion module is also configured to adjust cumulative dispersions of some received optical pulses to be outside of a range for the cumulative dispersions of corresponding optical pulses in the span directly preceding the same processor.

36. 发明授权

US06545791B1 Electro-optic optical elements 有权
标题翻译：电光元件
公开(公告)号：US06545791B1
公开(公告)日：2003-04-08
申请号：US10102594
申请日：2002-03-19
申请人： Leon McCaughan , Thomas F. Kuech , Dovas A. Saulys , Vladimir A. Joshkin , Aref Chowdhury , Chad Matthew Staus
发明人： Leon McCaughan , Thomas F. Kuech , Dovas A. Saulys , Vladimir A. Joshkin , Aref Chowdhury , Chad Matthew Staus
IPC分类号： G02F103
CPC分类号： G02F1/03 , G02F1/035 , G02F1/0356 , G02F1/05 , G02F1/2255 , G02F2202/20
摘要： Electro-optic elements are formed in metal oxide films, such as lithium niobate, on a substrate such as lithium niobate for utilization in electro-optical devices. The electro-optic elements include trenches in the lithium niobate selected to improve the performance of the device. Traveling wave modulators may be formed with a waveguide having first and second arms, electrodes over the lithium niobate layer, and trenches formed in the layer to focus the electric field in the waveguide, resulting in improved modulator performance.
摘要翻译：电光元件在诸如铌酸锂的金属氧化物膜中形成在诸如铌酸锂的衬底上，用于电光器件。电光元件包括选择用于改善器件性能的铌酸锂中的沟槽。行波调制器可以形成有具有第一和第二臂的波导，铌酸锂层上的电极以及形成在该层中的沟槽以聚焦在波导中的电场，导致改进的调制器性能。

37. 发明申请

US20130344875A1 ENERGY-MANAGEMENT IN A USER-PREMISES AREA NETWORK 有权
标题翻译：用户区域网络中的能源管理
公开(公告)号：US20130344875A1
公开(公告)日：2013-12-26
申请号：US13531019
申请日：2012-06-22
申请人： Aref Chowdhury
发明人： Aref Chowdhury
IPC分类号： H04W52/02 , H04W40/00 , H04M11/00
CPC分类号： H04L12/5692 , H04W40/00 , H04W52/02 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/168
摘要： An energy-management system for controlling energy consumption in a relatively small network of energy-consuming/generating objects connected to an electricity grid and located, e.g., at a user premises. The energy consumption is managed through a programmable gateway device that can be accessed remotely, e.g., through a smart-meter network of the utility company or through a short-range wireless link. A user interface for the remote access can be implemented, e.g., using a smart phone or a tablet. In operation, the gateway device advantageously provides the user and/or the utility company with numerous opportunities for realizing cost and/or energy savings through appropriate and timely response to various actionable conditions, such as price-of-electricity fluctuations, configuration-modification requests, failure notices, service requirements, hazard signals, etc.
摘要翻译：一种能量管理系统，用于控制连接到电力网并位于用户房屋处的能量消耗/产生物体的相对小的网络中的能量消耗。能量消耗通过可编程网关设备进行管理，该设备可以远程访问，例如通过公用事业公司的智能电表网络或通过短距离无线链路进行访问。可以实现用于远程访问的用户界面，例如使用智能电话或平板电脑。在操作中，网关设备有利地向用户和/或公用事业公司提供许多机会，通过适当和及时地响应诸如电价波动，配置修改请求等各种可操作的条件来实现成本和/或节能，故障通知，服务要求，危险信号等

38. 发明授权

US08615150B2 Method employing multiferroic materials for tunable permittivity or permeability 有权
标题翻译：采用多铁质材料调节介电常数或渗透率的方法
公开(公告)号：US08615150B2
公开(公告)日：2013-12-24
申请号：US13590834
申请日：2012-08-21
申请人： Aref Chowdhury , Arthur Penn Ramirez , Theo Max Siegrist
发明人： Aref Chowdhury , Arthur Penn Ramirez , Theo Max Siegrist
IPC分类号： G02F1/295 , H01P3/00
CPC分类号： H01Q3/26 , G02F1/0009 , G02F2202/30 , G02F2202/32 , H01P3/081 , H01Q3/44
摘要： A method of processing an electromagnetic signal, comprising includes configuring a waveguide that includes a multiferroic medium to propagate the electromagnetic signal. A mechanical strain or a control electrical or magnetic field is applied to the waveguide such that the applying changes a permittivity or a permeability of the medium. The electromagnetic signal is propagated through said waveguide while performing the applying.
摘要翻译：一种处理电磁信号的方法，包括配置包括多铁介质的波导以传播电磁信号。将机械应变或控制电场或磁场施加到波导，使得施加改变介质的介电常数或磁导率。电磁信号在执行施加时通过所述波导传播。

39. 发明申请

US20120314987A1 EMPLOYING MULTIFERROIC MATERIALS FOR TUNABLE PERMITTIVITY OR PERMEABILITY 有权
标题翻译：使用多种材料进行易位性或渗透性
公开(公告)号：US20120314987A1
公开(公告)日：2012-12-13
申请号：US13590834
申请日：2012-08-21
申请人： Aref Chowdhury , Arthur Penn Ramirez , Theo Max Siegrist
发明人： Aref Chowdhury , Arthur Penn Ramirez , Theo Max Siegrist
IPC分类号： G02F1/295 , H01P3/00
CPC分类号： H01Q3/26 , G02F1/0009 , G02F2202/30 , G02F2202/32 , H01P3/081 , H01Q3/44
摘要： A method of processing an electromagnetic signal, comprising includes configuring a waveguide that includes a multiferroic medium to propagate the electromagnetic signal. A mechanical strain or a control electrical or magnetic field is applied to the waveguide such that the applying changes a permittivity or a permeability of the medium. The electromagnetic signal is propagated through said waveguide while performing the applying.
摘要翻译：一种处理电磁信号的方法，包括配置包括多铁介质的波导以传播电磁信号。将机械应变或控制电场或磁场施加到波导，使得施加改变介质的介电常数或磁导率。电磁信号在执行施加时通过所述波导传播。

40. 发明授权

US07795596B2 Cloaking device detection system 有权
标题翻译：隐蔽装置检测系统
公开(公告)号：US07795596B2
公开(公告)日：2010-09-14
申请号：US12006529
申请日：2008-01-03
申请人： Aref Chowdhury
发明人： Aref Chowdhury
IPC分类号： G01J1/42
CPC分类号： G01S13/04 , G01S7/41
摘要： System including electromagnetic radiation source and electromagnetic radiation detector. Electromagnetic radiation source is configured to excite, with electromagnetic radiation having first source frequency, object configured for suppressing responsive emission of electromagnetic radiation having first source frequency. Electromagnetic radiation detector is configured to receive responsive emission of electromagnetic radiation from object. System is configured to detect presence of object. Method includes exciting, with electromagnetic radiation having first source frequency, object configured for suppressing responsive emission of electromagnetic radiation having first source frequency. Method includes receiving responsive emission of electromagnetic radiation from object and utilizing responsive emission to detect presence of object.
摘要翻译：系统包括电磁辐射源和电磁辐射检测器。电磁辐射源被配置为通过具有第一源频率的电磁辐射来激发被配置用于抑制具有第一源频率的电磁辐射的响应发射的物体。电磁辐射检测器被配置为接收来自物体的电磁辐射的响应发射。系统被配置为检测对象的存在。方法包括激励，具有第一源频率的电磁辐射，被配置用于抑制具有第一源频率的电磁辐射的响应发射的物体。方法包括从物体接收电磁辐射的响应发射并利用响应发射来检测物体的存在。

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