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1. 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。

2. 发明授权

US06846428B2 Thin film lithium niobate and method of producing the same 有权
标题翻译：薄膜铌酸锂及其制造方法
公开(公告)号：US06846428B2
公开(公告)日：2005-01-25
申请号：US10097441
申请日：2002-03-14
申请人： Leon McCaughan , Thomas F. Kuech , Dovas A. Saulys , Vladimir A. Joshkin , Aref Chowdhury
发明人： Leon McCaughan , Thomas F. Kuech , Dovas A. Saulys , Vladimir A. Joshkin , Aref Chowdhury
IPC分类号： G02F1/03 , G02F1/035 , G02F1/05 , G02F1/225 , B44C1/22 , C03C15/00 , C03C25/68 , C23F1/00 , C25F3/00
CPC分类号： G02F1/03 , G02F1/035 , G02F1/0356 , G02F1/05 , G02F1/2255 , G02F2202/20
摘要： Metal oxide films such as lithium niobate are formed in an amorphous state on a substrate such as lithium niobate and can be readily etched by conventional liquid or dry etchants. The amorphous film may then be converted by annealing to a crystalline form well suited to formation of electro-optical devices.
摘要翻译：诸如铌酸锂的金属氧化物膜在诸如铌酸锂的基底上以非晶态形成，并且可以容易地用常规的液体或干蚀刻剂蚀刻。然后可以通过退火将非晶膜转化成非常适合于形成电光器件的结晶形式。

3. 发明授权

US06433919B1 Method and apparatus for wavelength conversion and switching 失效
标题翻译：用于波长转换和切换的方法和装置
公开(公告)号：US06433919B1
公开(公告)日：2002-08-13
申请号：US09575040
申请日：2000-05-19
申请人： Aref Chowdhury , Leon McCaughan
发明人： Aref Chowdhury , Leon McCaughan
IPC分类号： G02F1365
CPC分类号： G02F2/004 , G02F1/3534
摘要： A two-dimensional second order nonlinear lattice formed in a lattice body is utilized for performing a one-step optical carrier wavelength interchange between pairs of input optical signals. The lattice body includes sensitized regions arranged in a two-dimensional array in a matrix material with the sensitized regions differing from the matrix material in the sign of the second order susceptibility. When an optical pump signal is coupled to the lattice body at a frequency corresponding to the sum of the frequencies of the two input signals, nonlinear interactions in the lattice body produce wavelength interchange between the input signals, resulting in angularly deflected optical signals exiting the lattice body in which the signal information on the input signals is interchanged between the carrier frequencies of the two input signals. The apparatus can be utilized to provide switching of optical signals and wavelength interchange for applications such as in wavelength division multiplexed communication systems.
摘要翻译：在晶格体中形成的二维二阶非线性晶格被用于在输入光信号对之间执行一步光载波波长交换。晶格体包括以矩阵材料二维阵列布置的敏化区域，其中敏感区域与基质材料不同于二阶易感性的符号。当光泵浦信号以对应于两个输入信号的频率之和的频率耦合到晶格体时，晶格体中的非线性相互作用产生输入信号之间的波长交换，导致离开晶格的角度偏转的光信号其中输入信号的信号信息在两个输入信号的载波频率之间互换。该装置可以用于为诸如波分复用通信系统之类的应用提供光信号和波长交换的切换。

4. 发明授权

US09054807B2 Reducing crosstalk in optical wavelength converters 有权
标题翻译：减少光波长转换器中的串扰
公开(公告)号：US09054807B2
公开(公告)日：2015-06-09
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： H04B10/2513
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.
摘要翻译：光纤传输系统包括一系列光纤传输跨度和一个或多个全光信号处理器。光纤传输跨接连接形成光通信路径。每个全光信号处理器直接连接相应的相邻的一对跨距。每个全光信号处理器包括具有输入和输出端口的光波长转换器和连接到同一处理器的光波长转换器的输入端口的色散调节模块。分散模块还被配置为将一些接收到的光脉冲的累积色散调整在与直接在同一处理器之前的范围内的对应光脉冲的累积色散的范围之外。

5. 发明申请

US20140177658A1 Optical Wavelength-Selective Switch With A Bank Of Wavelength Convertors 有权
标题翻译：具有波长转换器组的光波长选择开关
公开(公告)号：US20140177658A1
公开(公告)日：2014-06-26
申请号：US13726382
申请日：2012-12-24
申请人： Aref Chowdhury , Dominick Scordo
发明人： Aref Chowdhury , Dominick Scordo
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0005 , H04J14/0212 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/003 , H04Q2011/0058
摘要： An apparatus includes a wavelength-selective optical switch able to route light between a first optical port and a plurality of second optical ports. The wavelength-selective optical switch includes a bank of optical wavelength-converters. Each wavelength converter of the bank is able to selectively optically couple an optical data stream on a wavelength-channel between the first optical port and individual ones of the second optical ports.
摘要翻译：一种装置包括能够在第一光学端口和多个第二光学端口之间路由光的波长选择性光学开关。波长选择光开关包括一组光波长转换器。银行的每个波长转换器能够选择性地光耦合在第一光学端口和第一光学端口上的波长通道之间的波长信道上的光学数据流。

6. 发明授权

US08569042B2 DNA structures on ferroelectrics and semiconductors 有权
标题翻译：铁电体和半导体上的DNA结构
公开(公告)号：US08569042B2
公开(公告)日：2013-10-29
申请号：US11064907
申请日：2005-02-23
申请人： Aref Chowdhury , Hock Min Ng , Bernard Yurke
发明人： Aref Chowdhury , Hock Min Ng , Bernard Yurke
IPC分类号： C12M1/34 , C12M1/00 , C12Q1/68 , G01N27/00 , G01N21/00 , H01L21/20 , C07H21/02
CPC分类号： G02B6/124 , B82Y10/00 , B82Y15/00 , B82Y20/00 , G01N33/553 , G01N33/588
摘要： An apparatus includes a substrate and a plurality of DNA oligomers in contact with a top surface of the substrate. The substrate is a polar ferroelectric or a polar compound semiconductor.
摘要翻译：一种装置包括底物和与基底的顶表面接触的多个DNA低聚物。基板是极性铁电体或极性化合物半导体。

7. 发明申请

US20100086750A1 CONDUCTIVE POLYMER METAMATERIALS 审中-公开
标题翻译：导电聚合物元素
公开(公告)号：US20100086750A1
公开(公告)日：2010-04-08
申请号：US12247819
申请日：2008-10-08
申请人： Girsh Blumberg , Aref Chowdhury
发明人： Girsh Blumberg , Aref Chowdhury
IPC分类号： B32B3/10 , B32B27/00 , H04B10/00
CPC分类号： B32B27/00 , B32B3/02 , B32B3/26 , B32B3/28 , B32B15/08 , B32B27/08 , B32B27/18 , B32B27/28 , B32B27/286 , B32B27/30 , B32B27/32 , B32B27/322 , B32B2270/00 , B32B2307/20 , B32B2307/202 , B32B2307/40 , B32B2307/418 , B32B2307/546 , B32B2307/706 , B32B2307/718 , B32B2551/00 , Y10T428/24802 , Y10T428/31855
摘要： An apparatus 100, comprising an optical component 105 having a stack 180 of layers 182 of electrically conductive flexible polymers, the stack being a metamaterial.
摘要翻译：一种装置100，包括具有导电柔性聚合物层182的堆叠180的光学部件105，该堆叠是超材料。

8. 发明申请

US20070286607A1 LOW TOTAL EXCURSION DISPERSION MAPS 失效
标题翻译：低总挥发分散度
公开(公告)号：US20070286607A1
公开(公告)日：2007-12-13
申请号：US11844940
申请日：2007-08-24
申请人： Aref Chowdhury , Rene'-Jean Essiambre , Lisa Wickham
发明人： Aref Chowdhury , Rene'-Jean Essiambre , Lisa Wickham
IPC分类号： H04B10/18
CPC分类号： H04B10/25253
摘要： A process optically transports digital data over an all-optical long-haul communication path. The process includes transporting digital optical data signals at a selected bit rate and a selected wavelength over a sequence of transmission spans. The sequence includes 70 percent or more of the spans of the long-haul all-optical communication path. Each span of the sequence has a primary local maximum optical power point for the wavelength on a transmission fiber and nearest to an input of the span. The transporting causes a cumulative dispersion of each signal to evolve such that residual dispersions per span are positive over some of the spans and are negative over other of the spans. At the primary local maximum power points, magnitudes of cumulative dispersions of the signals in pico seconds per nanometer remain at less than 32,000 times the inverse of the bit rate in giga bits per second.
摘要翻译：一种过程通过全光学长途通信路径光学传输数字数据。该过程包括以选定的比特率传送数字光学数据信号，并在一系列传输跨度上传输选定的波长。该序列包括长距离全光通信路径的70％或更多的跨度。序列的每个跨度具有用于传输光纤上的波长并且最接近跨度的输入的主要局部最大光功率点。运输导致每个信号的累积色散发展使得每跨度的每个跨度的残余分散是正的，并且在其它跨度上是负的。在主要局部最大功率点，信号的累积分散幅度以微微秒/纳米为单位，保持在比特率（千比特每秒）的倒数的32000倍以下。

9. 发明授权

US07084563B2 Group III-nitride layers with patterned surfaces 有权
标题翻译：具有图案化表面的III族氮化物层
公开(公告)号：US07084563B2
公开(公告)日：2006-08-01
申请号：US11180350
申请日：2005-07-13
申请人： Aref Chowdhury , Hock Min Ng , Richart Elliott Slusher
发明人： Aref Chowdhury , Hock Min Ng , Richart Elliott Slusher
IPC分类号： H01J1/62 , H01L33/00
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： An apparatus includes a crystalline substrate, a layer of a first group III-nitride located on a planar surface of the substrate, and a layer of a second group III-nitride located over the layer of the first group III-nitride. The first and second group III-nitrides have different alloy compositions. The layer of second group III-nitride may have a pattern of columnar holes or trenches therein. The apparatus may include a plurality of pyramidal field-emitters that include the second group III-nitride.
摘要翻译：一种装置包括晶体衬底，位于衬底的平面表面上的第一III族氮化物层和位于第一III族氮化物层上的第二III族氮化物层。第一和第二III族氮化物具有不同的合金组成。第二III族氮化物的层可以具有柱状孔或其中的沟槽的图案。该装置可以包括多个金字塔形场致发射体，其包括第二III族氮化物。

10. 发明申请

US20050244159A1 Optical wavelength-conversion 审中-公开
标题翻译：光波长转换
公开(公告)号：US20050244159A1
公开(公告)日：2005-11-03
申请号：US10835753
申请日：2004-04-30
申请人： Aref Chowdhury , Christopher Doerr , Gregory Raybon
发明人： Aref Chowdhury , Christopher Doerr , Gregory Raybon
IPC分类号： G02B6/34 , H04J14/06
CPC分类号： H04J14/02 , H04J14/06
摘要： An apparatus includes an optical wavelength-converter and a polarization splitter. The polarization splitter is configured to receive input and pump light, to direct a first polarization component of the received input and pump light to a first optical path, and to direct a second polarization component of the received input and pump light to a separate second optical path. The optical wavelength-converter has first and second optical ports. The first optical port is at an end of the first optical path. The second port is at an end of the second optical path. The wavelength-converter outputs wavelength-converted light from one of the ports in response to receiving the input and pump light at the other of the ports. The two optical paths may include polarization-maintaining optical waveguides. The polarization splitter and optical paths may be configured to transmit substantially the same pump light intensity to the two optical ports.
摘要翻译：一种装置包括光波长转换器和偏振分离器。偏振分离器被配置为接收输入和泵浦光，以将接收到的输入和泵浦光的第一偏振分量引导到第一光路，并且将接收的输入和泵浦光的第二偏振分量引导到单独的第二光学路径。光波长转换器具有第一和第二光端口。第一光口位于第一光路的一端。第二端口处于第二光路的一端。响应于接收另一个端口处的输入和泵浦光，波长转换器从一个端口输出波长转换的光。两个光路可以包括偏振保持光波导。偏振分离器和光路可以被配置为将基本相同的泵浦光强度传输到两个光学端口。

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