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11. 发明申请

US20070253055A1 Polarization-diverse optical amplification 有权
标题翻译：极化多样的光学放大
公开(公告)号：US20070253055A1
公开(公告)日：2007-11-01
申请号：US11412018
申请日：2006-04-26
申请人： Aref Chowdhury , Christopher Doerr , Gregory Raybon
发明人： Aref Chowdhury , Christopher Doerr , Gregory Raybon
IPC分类号： H01S3/00
CPC分类号： H01S5/5009 , H01S3/06712 , H01S3/10007 , H01S3/10023 , H01S3/1301 , H01S3/2308
摘要： A polarization-diverse optical amplifier includes a polarization-sensitive optically active medium and a polarization splitter. The polarization splitter is configured to receive input light, to direct a first polarization component of the received input light to a first optical path segment, and to direct a second polarization component of the received input light to a separate second optical path segment. The active medium has first and second optical ports. The first optical port is at an end of the first optical path segment. The second port is at an end of the second optical path segment. The active medium outputs amplified light from one of the ports in response to receiving the input light at the other of the ports. In a preferred embodiment, the active medium has an internal optical axis, and the polarizations of the first and second components are oriented relative to that axis so that amplification is enhanced. The two optical path segments may include polarization-maintaining optical waveguides.
摘要翻译：偏振分集光放大器包括偏振光敏光学介质和偏振分光器。偏振分离器被配置为接收输入光，以将接收的输入光的第一偏振分量引导到第一光路段，并将接收的输入光的第二偏振分量引导到单独的第二光路段。活动介质具有第一和第二光学端口。第一光口位于第一光路段的一端。第二端口处于第二光路段的一端。响应于在另一个端口处接收输入光，有源介质从一个端口输出放大的光。在优选实施例中，活性介质具有内部光轴，并且第一和第二组分的极化相对于该轴取向，从而增强了放大。两个光路段可以包括偏振保持光波导。

12. 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.

13. 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。

14. 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。

15. 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。

16. 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。

17. 发明授权

US08070966B2 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：US08070966B2
公开(公告)日：2011-12-06
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： C25F3/00 , C03C25/68 , H01L21/461
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。

18. 发明申请

US20110128614A1 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：US20110128614A1
公开(公告)日：2011-06-02
申请号：US13018997
申请日：2011-02-01
申请人： Girsh Blumberg , Aref Chowdhury
发明人： Girsh Blumberg , Aref Chowdhury
IPC分类号： G02F1/37 , G02B6/00
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： A frequency-conversion method 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. A periodic structure 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：一种频率转换方法，其使用非线性光学方法在沿着导电条带引导的表面等离子体（SP）波之间传递能量，并且沿着沿与光导体相邻的光波导引导的光束跳闸。周期性结构利用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波导芯的非线性磁化率。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。

19. 发明授权

US07848026B2 Chirped metamaterials 有权
标题翻译：啁啾超材料
公开(公告)号：US07848026B2
公开(公告)日：2010-12-07
申请号：US12229866
申请日：2008-08-27
申请人： Aref Chowdhury , Philip Moss Platzman , Lorraine S. Platzman, legal representative
发明人： Aref Chowdhury , Philip Moss Platzman
IPC分类号： G02B3/00 , G02B6/028
CPC分类号： B82Y20/00 , G02B1/002 , G02B6/1225 , G02B2006/12147 , G02F1/353 , G02F2202/30 , H01Q15/0026 , H01Q15/0086
摘要： An apparatus includes a medium that is a metamaterial over a frequency range. The medium includes a stack of layers or slabs. A mechanical, electrical, or magnetic property of the layers or slabs of the stack varies monotonically between neighboring ones of the layers or slabs.
摘要翻译：一种装置包括在频率范围上是超材料的介质。介质包括一叠层或板。堆叠的层或板的机械，电或或磁性质在相邻的层或板之间单调地变化。

20. 发明申请

US20060220525A1 Group III-nitride layers with patterned surfaces 有权
公开(公告)号：US20060220525A1
公开(公告)日：2006-10-05
申请号：US11442032
申请日：2006-05-27
申请人： Aref Chowdhury , Hock Ng , Richart Slusher
发明人： Aref Chowdhury , Hock Ng , Richart Slusher
IPC分类号： H01J63/04 , H01J1/62
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.

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