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1. 发明授权

US07176482B1 DNA-based electronics 失效
标题翻译：基于DNA的电子学
公开(公告)号：US07176482B1
公开(公告)日：2007-02-13
申请号：US09724436
申请日：2000-11-28
申请人： Eshel Ben-Jacob , Ziv Hermon , Shay Caspi
发明人： Eshel Ben-Jacob , Ziv Hermon , Shay Caspi
IPC分类号： H01L29/72 , H01L29/12 , C07H21/04
CPC分类号： H01L51/0595 , B82Y10/00 , G06N3/123 , H01L51/0093
摘要： Digital computational circuit comprising a network made of a plurality of identical repetitive DNA-based conductive elements. The DNA-based elements used for the purposes of the invention employ a P-bridge as a tunnel junction for a net charge. The DNA-based element of which the circuit is made may be a DNA SET transistor. The circuit may comprise a DNA resistor built from a plurality of SET transistor elements a series, with a constant over-threshold gate voltage. The circuit may further comprise NOT and NOR gates. The NOT gate can be made of a DNA-based transistor and a resistor, and the resistor can be made by using a DNA SET transistor with a constant over-threshold gate voltage, and by placing a plurality of such DNA SET transistors in series until the resistivity reaches the desired value. The NOR gate, on the other hand, can be built from two NOT elements wherein the output of the first NOT element is connected to the resistor of the second NOT element as it voltage supply.
摘要翻译：数字计算电路包括由多个相同的重复基于DNA的导电元件制成的网络。用于本发明目的的基于DNA的元件采用P桥作为净电荷的隧道结。制作电路的基于DNA的元件可以是DNA SET晶体管。电路可以包括由多个SET晶体管元件构成的DNA电阻器，其具有恒定的过阈值栅极电压。电路还可以包括NOT和NOR门。 NOT门可以由基于DNA的晶体管和电阻器制成，并且可以通过使用具有恒定过阈值栅极电压的DNA SET晶体管制造电阻器，并且通过将多个这样的DNA SET晶体管串联放置直到电阻率达到所需值。另一方面，NOR门可以由两个NOT元件构成，其中第一NOT元件的输出连接到第二NOT元件的电阻器作为其电压供应。

2. 发明授权

US06856751B2 Method and system for obtaining variable optical attenuation with very low polarization dependent loss over an ultra wide dynamic range 失效
标题翻译：用于在超宽动态范围内获得具有非常低的偏振相关损耗的可变光衰减的方法和系统
公开(公告)号：US06856751B2
公开(公告)日：2005-02-15
申请号：US10159044
申请日：2002-06-03
申请人： David Oaknin , Eran Brand , Shay Caspi , Nahum Izhaki
发明人： David Oaknin , Eran Brand , Shay Caspi , Nahum Izhaki
IPC分类号： G02B6/34 , G02B6/00 , G01C19/72
CPC分类号： G02B6/29355 , G02B6/266
摘要： A method and system of operating a variable optical attenuator to provide a required total attenuation in a planar lightwave circuit. The method comprises providing a first Mach-Zehnder interferometer having a first and a second arm carrying signals in an arbitrary polarization state, providing a second Mach-Zehnder interferometer having a third and a fourth arm carrying signals in an arbitrary polarization state, the second Mach-Zehnder interferometer concatenated in tandem with the first Mach-Zehnder interferometer, and cooperatively operating the concatenated first and second Mach-Zehnder interferometers to obtain the required total attenuation and an effectively nil polarization dependent loss.
摘要翻译：一种操作可变光衰减器以在平面光波电路中提供所需总衰减的方法和系统。该方法包括提供具有第一和第二臂的第一马赫 - 曾德尔干涉仪，该第一和第二臂承载任意极化状态的信号，提供第二马赫 - 曾德尔干涉仪，其具有承载任意偏振态的信号的第三和第四臂，第二马赫 -Zehnder干涉仪与第一马赫 - 策德尔干涉仪串联连接，并协同操作级联的第一和第二马赫 - 策德尔干涉仪，以获得所需的总衰减和有效的零极化相关损耗。

3. 发明授权

US07254299B2 High-tolerance broadband-optical switch in planar lightwave circuits 失效
标题翻译：平面光波电路中的高容差宽带光开关
公开(公告)号：US07254299B2
公开(公告)日：2007-08-07
申请号：US10763326
申请日：2004-01-26
申请人： Nahum Izhaky , David Oaknin , Eran Brand , Shay Caspi
发明人： Nahum Izhaky , David Oaknin , Eran Brand , Shay Caspi
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： G02B6/125 , G02B6/1228 , G02F1/0147 , G02F1/3136 , G02F2001/0113 , G02F2203/48
摘要： Broadband optical switches based on adiabatic couplers having a pair of asymmetric waveguides with variable curvature sections include in a 2×2 configuration based on a Mach-Zehnder interferometer two such adiabatic couplers, and in a 1×2 or 2×1 configuration an adiabatic coupler and an Y-splitter. Each adiabatic coupler includes two waveguide branches of different but constant widths having curved sections with varying radii, separated over a coupling length by a changing spacing therebetween and blending in an asymmetric intersection area, and two symmetric branches. In the 2×2 switch, the two adiabatic couplers face each other with their respective symmetric branches, and are connected by the two identical arms along a main propagation axis in a mirror image. The utilization of the variable curvature adiabatic couplers in silica MZI switches on a silicon substrate provides switches with an exceptional broadband range (1.2-1.7 μm), very high extinction ratios (>35 dB), low fabrication sensitivity and polarization independent operation. The switches are significantly smaller than known broadband switches, have significantly smaller excess loss, faster switching time and low power consumption.
摘要翻译：基于具有可变曲率部分的一对不对称波导的绝热耦合器的宽带光开关包括基于Mach-Zehnder干涉仪的两个这样的绝热耦合器的2x2配置，并且在1x2或2x1配置中具有绝热耦合器和Y分路器。每个绝热耦合器包括具有不同但恒定宽度的两个波导分支，其具有变化的半径的弯曲部分，通过其间的间隔改变在耦合长度上分离，并且在非对称交叉区域和两个对称分支中混合。在2x2开关中，两个绝热耦合器以相应的对称分支彼此面对，并且通过两个相同的臂沿镜像中的主传播轴线连接。利用硅二极管MZI中的可变曲率绝热耦合器可以提供具有特殊宽带范围（1.2-1.7μm），非常高的消光比（> 35dB），低制造灵敏度和极化独立操作的开关。这些开关明显小于已知的宽带交换机，具有显着更小的超量损耗，更快的开关时间和低功耗。

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