公开(公告)号：US07745790B2

公开(公告)日：2010-06-29

申请号：US11942776

申请日：2007-11-20

Applicant: Aref Chowdhury ,  John A. Tataronis

Inventor： Aref Chowdhury ,  John A. Tataronis

IPC: G01J1/42

CPC classification number: G02F1/3534 ,  B82Y20/00 ,  G02B1/007 ,  G02F2202/30 ,  G02F2203/13

Abstract: A negative refractive index device and a method of generating radiation. In one embodiment, the device includes: (1) an optical input configured to receive light and (2) an optical medium having a negative index of refraction and a second-order nonlinearity proximate a center frequency of the light, coupled to the optical input and configured to resonate in response to the light to yield radiation having a phase velocity based on a group velocity of the light.

Abstract translation: 负折射率装置和产生辐射的方法。 在一个实施例中，该装置包括：（1）配置成接收光的光学输入和（2）具有负光折射率的光学介质和靠近光的中心频率的二阶非线性光耦合到光输入 并且被配置为响应于光而共振以产生具有基于光的组速度的相位速度的辐射。

公开(公告)号：US07586670B2

公开(公告)日：2009-09-08

申请号：US11432803

申请日：2006-05-13

Applicant: Aref Chowdhury ,  John A. Tataronis

Inventor： Aref Chowdhury ,  John A. Tataronis

IPC: G02F1/35 ,  G02F2/02

CPC classification number: G02F1/3534 ,  G02F1/365 ,  G02F2202/30

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07558485B2

公开(公告)日：2009-07-07

申请号：US10441532

申请日：2003-05-20

Applicant: Aref Chowdhury ,  Rene′ -Jean Essiambre

Inventor： Aref Chowdhury ,  Rene′ -Jean Essiambre

IPC: H04B10/12

CPC classification number: H04B10/2531

Abstract: The desirable effects of an optical phase conjugator are accompanied by a frequency shift with reversal of the frequency order of channels in a multichannel optical communication system. Such effects are rectifiable by employing a sequence involving demultiplexing the multichannel signal, operating on the individual, demultiplexed channel with a corresponding optical phase conjugator or frequency shifter followed by multiplexing the signal. This sequence is combined with a complementary operation—optical phase conjugator to complement a frequency shifting sequence or frequency shifting to complement an optical phase conjugating sequence.

Abstract translation: 光相位共轭器的期望效果伴随着多通道光通信系统中信道频率顺序反转的频移。 这样的效果可以通过采用涉及解复用多信道信号的序列来纠正，该信号用相应的光相位共轭器或频移器在单独的解复用信道上操作，随后复用信号。 该序列与互补运算光相位共轭器组合以补充频移序列或频移以补充光相位共轭序列。

公开(公告)号：US20090127472A1

公开(公告)日：2009-05-21

申请号：US11942776

申请日：2007-11-20

Applicant: Aref Chowdhury ,  John A. Tataronis

Inventor： Aref Chowdhury ,  John A. Tataronis

IPC: G01J1/42 ,  G01J1/00

CPC classification number: G02F1/3534 ,  B82Y20/00 ,  G02B1/007 ,  G02F2202/30 ,  G02F2203/13

Abstract: A negative refractive index device and a method of generating radiation. In one embodiment, the device includes: (1) an optical input configured to receive light and (2) an optical medium having a negative index of refraction and a second-order nonlinearity proximate a center frequency of the light, coupled to the optical input and configured to resonate in response to the light to yield radiation having a phase velocity based on a group velocity of the light.

Abstract translation: 负折射率装置和产生辐射的方法。 在一个实施例中，该装置包括：（1）被配置为接收光的光学输入和（2）耦合到光输入端的具有负的折射率和靠近光的中心频率的二次非线性的光学介质 并且被配置为响应于光而共振以产生基于光的组速度的相速度的辐射。

公开(公告)号：US07468578B2

公开(公告)日：2008-12-23

申请号：US11442032

申请日：2006-05-27

Applicant: Aref Chowdhury ,  Hock Ng ,  Richart Elliott Slusher

Inventor： Aref Chowdhury ,  Hock Ng ,  Richart Elliott Slusher

IPC: H01J9/24

CPC classification number: B82Y20/00 ,  B81B1/00 ,  G02B6/1225 ,  G02B2006/12035 ,  H01J1/304 ,  H01J3/022 ,  H01J9/025 ,  H01L21/0254 ,  H01L21/02639 ,  H01L21/30612

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07266257B1

公开(公告)日：2007-09-04

申请号：US11485091

申请日：2006-07-12

Applicant: Aref Chowdhury ,  Gregory Raybon

Inventor： Aref Chowdhury ,  Gregory Raybon

IPC: G02F1/035 ,  H04B10/00

CPC classification number: H04B10/118 ,  H04B10/1121

Abstract: An optical transmitter includes a modulator, a dispersion adjustment module, and an optical amplifier. The optical transmitter is configured to transmit optical pulses over a free-space optical communication channel. The modulator is configured to produce an optical carrier that is amplitude and/or phase modulated by data. The dispersion adjustment module is connected between the modulator and the amplifier and is configured to substantially change temporal widths of optical pulses received from the modulator by changing dispersions of the received optical pulses.

Abstract translation: 光发射机包括调制器，色散调节模块和光放大器。 光发射机被配置为在自由空间光通信信道上传输光脉冲。 调制器被配置为产生由数据幅度和/或相位调制的光载波。 色散调整模块连接在调制器和放大器之间，并被配置为通过改变接收到的光脉冲的分散来大大改变从调制器接收的光脉冲的时间宽度。

公开(公告)号：US09054807B2

公开(公告)日：2015-06-09

申请号：US11138007

申请日：2005-05-26

Applicant: Aref Chowdhury ,  Gregory Raybon

Inventor： Aref Chowdhury ,  Gregory Raybon

IPC: H04B10/2513

CPC classification number: H04B10/2513

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140177658A1

公开(公告)日：2014-06-26

申请号：US13726382

申请日：2012-12-24

Applicant: Aref Chowdhury ,  Dominick Scordo

Inventor： Aref Chowdhury ,  Dominick Scordo

IPC: H04Q11/00

CPC classification number: H04Q11/0005 ,  H04J14/0212 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/003 ,  H04Q2011/0058

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08569042B2

公开(公告)日：2013-10-29

申请号：US11064907

申请日：2005-02-23

Applicant: Aref Chowdhury ,  Hock Min Ng ,  Bernard Yurke

Inventor： Aref Chowdhury ,  Hock Min Ng ,  Bernard Yurke

IPC: C12M1/34 ,  C12M1/00 ,  C12Q1/68 ,  G01N27/00 ,  G01N21/00 ,  H01L21/20 ,  C07H21/02

CPC classification number: G02B6/124 ,  B82Y10/00 ,  B82Y15/00 ,  B82Y20/00 ,  G01N33/553 ,  G01N33/588

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100086750A1

公开(公告)日：2010-04-08

申请号：US12247819

申请日：2008-10-08

Applicant: Girsh Blumberg ,  Aref Chowdhury

Inventor： Girsh Blumberg ,  Aref Chowdhury

IPC: B32B3/10 ,  B32B27/00 ,  H04B10/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。