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公开(公告)号：US09200959B2
公开(公告)日：2015-12-01
申请号：US13945542
申请日：2013-07-18
申请人： Mohammad J. Khan , Sumanth Kaushik , Jerry C Chen
发明人： Mohammad J. Khan , Sumanth Kaushik , Jerry C Chen
IPC分类号： G01J3/42 , G01N21/3581 , G01N21/17
CPC分类号： G01J3/42 , G01N21/3581 , G01N2021/1793
摘要： Disclosed herein are a system and corresponding method for sensing terahertz radiation. The system collects terahertz radiation scattered from a target and upconverts the collected radiation to optical frequencies. A frequency-domain spectrometer senses spectral components of the upconverted signal in parallel to produce a spectroscopic measurement of the entire band of interest in a single shot. Because the sensing system can do single-shot measurements, it can sense moving targets, unlike sensing systems that use serial detection, which can only be used to sense stationary objects. As a result, the sensing systems and methods disclosed herein may be used for real-time imaging, including detection of concealed weapons, medical imaging, and hyperspectral imaging.
摘要翻译： 这里公开了用于感测太赫兹辐射的系统和相应的方法。 系统收集从目标散射的太赫兹辐射，并将收集的辐射上变频到光频率。 频域光谱仪平行地感测上转换信号的光谱分量，以在单次拍摄中产生整个感兴趣的频带的光谱测量。 因为感测系统可以进行单次测量，所以它可以感测移动目标，不同于使用串行检测的传感系统，只能用于感测静止物体。 结果，本文公开的感测系统和方法可用于实时成像，包括隐藏武器的检测，医学成像和高光谱成像。
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公开(公告)号：US07127172B1
公开(公告)日：2006-10-24
申请号：US09324253
申请日：1999-06-02
申请人： Jerry C Chen
发明人： Jerry C Chen
IPC分类号： H04J14/02
CPC分类号： H04B10/25751 , H04B10/548 , H04B10/58
摘要： The present invention relates to an optical signal shaping device such as an optical filter having a profile such that transmission of light through the device varies as a function of frequency over a selected bandwidth. The optical signal shaping device of the present invention includes a frequency dependent disperser that disperses the input optical signal to form a dispersed signal having a plurality of frequencies, a frequency selective modulator that modulates at least one of the plurality of frequencies and a frequency dependent combiner that combines the frequencies to form a modulated output signal.
摘要翻译： 本发明涉及一种光信号整形装置，例如光滤波器，其具有使得透过装置的光的透过在所选带宽上作为频率的函数而变化。 本发明的光信号整形装置包括频率分散器，其分散输入的光信号以形成具有多个频率的分散信号;频率选择调制器，其调制多个频率中的至少一个频率;频率相关组合器 其组合频率以形成调制输出信号。
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公开(公告)号：US08514393B2
公开(公告)日：2013-08-20
申请号：US13016143
申请日：2011-01-28
IPC分类号： G01J3/28
CPC分类号： G01J3/42 , G01N21/3581 , G01N2021/1793
摘要： Disclosed herein are a system and corresponding method for sensing terahertz radiation. The system collects terahertz radiation scattered from a target and upconverts the collected radiation to optical frequencies. A frequency-domain spectrometer senses spectral components of the upconverted signal in parallel to produce a spectroscopic measurement of the entire band of interest in a single shot. Because the sensing system can do single-shot measurements, it can sense moving targets, unlike sensing systems that use serial detection, which can only be used to sense stationary objects. As a result, the sensing systems and methods disclosed herein may be used for real-time imaging, including detection of concealed weapons, medical imaging, and hyperspectral imaging.
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公开(公告)号：US20120008140A1
公开(公告)日：2012-01-12
申请号：US13016143
申请日：2011-01-28
IPC分类号： G01J3/00
CPC分类号： G01J3/42 , G01N21/3581 , G01N2021/1793
摘要： Disclosed herein are a system and corresponding method for sensing terahertz radiation. The system collects terahertz radiation scattered from a target and upconverts the collected radiation to optical frequencies. A frequency-domain spectrometer senses spectral components of the upconverted signal in parallel to produce a spectroscopic measurement of the entire band of interest in a single shot. Because the sensing system can do single-shot measurements, it can sense moving targets, unlike sensing systems that use serial detection, which can only be used to sense stationary objects. As a result, the sensing systems and methods disclosed herein may be used for real-time imaging, including detection of concealed weapons, medical imaging, and hyperspectral imaging.
摘要翻译： 这里公开了用于感测太赫兹辐射的系统和相应的方法。 该系统收集从目标散射的太赫兹辐射，并将收集的辐射上变频到光频率。 频域光谱仪平行地感测上转换信号的光谱分量，以在单次拍摄中产生整个感兴趣的频带的光谱测量。 因为感测系统可以进行单次测量，所以它可以感测移动目标，不同于使用串行检测的传感系统，只能用于感测静止物体。 结果，本文公开的感测系统和方法可用于实时成像，包括隐藏武器的检测，医学成像和高光谱成像。
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5.发明授权Methods and apparatus to make substantially uniform losses in optical cross connects 有权在光学交叉连接中使基本上均匀损失的方法和装置公开(公告)号：US07623744B2
公开(公告)日：2009-11-24
申请号：US12137023
申请日：2008-06-11
申请人： Jerry C. Chen
发明人： Jerry C. Chen
CPC分类号： G02B6/352 , G02B6/3546 , G02B6/356
摘要： A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes adjusting a curvature of the common beam steerer so that paths of the optical signals have substantially the same effective path length.
摘要翻译： 用于交叉连接光信号的方法包括使用公共波束控制器将一组光信号从一组输入端口引导到一组输出端口。 该方法还包括调整公共光束转向器的曲率，使得光信号的路径具有基本上相同的有效路径长度。
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公开(公告)号：US20080074674A1
公开(公告)日：2008-03-27
申请号：US11626966
申请日：2007-01-25
申请人： Jerry C. Chen , Sumanth Kaushik
发明人： Jerry C. Chen , Sumanth Kaushik
IPC分类号： G01B11/02
摘要： Described are a sensor and a method for measuring a vibration of a surface obscured from view. The sensor includes a narrowband source of a terahertz beam, a beamsplitter, a beam combiner and a terahertz detector. The beamsplitter splits the terahertz beam into a sample beam for irradiating the surface and a reference beam. The beam combiner combines the sample beam scattered from the surface and the reference beam. The terahertz detector generates an electrical signal based on a modulation of the power of the combined beams due to the vibrating surface. The electrical signal indicates a characteristic of the surface vibration. Homodyne or heterodyne detection can be utilized. Advantageously, the sensor can see surfaces that are covered, concealed or otherwise obscured behind optically opaque materials, including plastic, cloth, foam, paper and other materials. Thus the sensor has a wide variety of applications where conventional vibrometers are not practical.
摘要翻译： 描述了一种用于测量从视野遮蔽的表面的振动的传感器和方法。 传感器包括太赫兹波束的窄带源，分束器，波束组合器和太赫兹检测器。 分束器将太赫兹光束分成用于照射表面的样品光束和参考光束。 光束组合器将从表面散射的样品光束和参考光束组合。 太赫兹检测器基于由于振动表面的组合光束的功率的调制而产生电信号。 电信号表示表面振动的特征。 可以利用零差或外差检测。 有利地，传感器可以看到在光学不透明材料（包括塑料，布，泡沫，纸和其它材料）之后被覆盖，隐藏或以其他方式遮盖的表面。 因此，传感器具有广泛的应用，其中常规的振动计不实用。
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公开(公告)号：US06326597B1
公开(公告)日：2001-12-04
申请号：US09292726
申请日：1999-04-15
申请人： Dmitry Lubomirsky , Allen I. D'ambra , Edward L Floyd , Qiwei Liang , Daniel J Hoffman , Victor H Fuentes , Simon Yavelberg , Jerry C Chen
发明人： Dmitry Lubomirsky , Allen I. D'ambra , Edward L Floyd , Qiwei Liang , Daniel J Hoffman , Victor H Fuentes , Simon Yavelberg , Jerry C Chen
IPC分类号： B23K1000
CPC分类号： H01L21/67248
摘要： Temperature control of a process chamber 25 is achieved by directing a flow of gas at an external surface 100 of the chamber 25. In one aspect, gas directed at the chamber 25 passes through a gas flow amplifier 115 that increases the gas flow. Gas for the temperature control can be drawn in from the ambient air and, after passing over the process chamber 25, the gas can flow out through an outlet 150. Data is presented demonstrating superior temperature control performance over a conventional system.
摘要翻译： 通过在室25的外表面100处引导气体流来实现处理室25的温度控制。在一个方面，指向室25的气体通过增加气体流量的气流放大器115。 用于温度控制的气体可以从环境空气中吸入，并且在通过处理室25之后，气体可以通过出口150流出。提供数据表明比常规系统具有优异的温度控制性能。
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8.发明授权Methods and apparatus to make substantially uniform losses in optical cross connects 有权在光学交叉连接中使基本上均匀损失的方法和装置公开(公告)号：US08270785B2
公开(公告)日：2012-09-18
申请号：US12579108
申请日：2009-10-14
申请人： Jerry C. Chen
发明人： Jerry C. Chen
CPC分类号： G02B6/352 , G02B6/3546 , G02B6/356
摘要： A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes adjusting a curvature of the common beam steerer so that paths of the optical signals have substantially the same effective path length.
摘要翻译： 用于交叉连接光信号的方法包括使用公共波束控制器将一组光信号从一组输入端口引导到一组输出端口。 该方法还包括调整公共光束转向器的曲率，使得光信号的路径具有基本上相同的有效路径长度。
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9.发明授权公开(公告)号：US06996345B1
公开(公告)日：2006-02-07
申请号：US10145616
申请日：2002-05-10
申请人： Jerry C. Chen
发明人： Jerry C. Chen
IPC分类号： H04B10/04
CPC分类号： G02F1/0121 , G02F1/03 , G02F2203/19
摘要： Changing the phrases when mixing of optical modes gives rise to intensity effects. This occurs in multi-mode interferometer (MMI) or arrayed waveguide gratings (AWG). Here we use an electro-arefractive modulator, with a quadratic electro-optic effect that has an optical transfer function (Or power vs voltage (L-V) curve) given by is Pout=Pin (1+γ cos θ)/2 where asymmetry factor γ measures the extinction ratio and the phase difference θ between arms is π V 2 V π 2 π V 2 V π 2 . In turn, the voltage V is expressed as a sum of the DC bias and RF drive V=VDC+VRF.
摘要翻译： 在混合光学模式时改变短语会产生强度效应。 这发生在多模干涉仪（MMI）或阵列波导光栅（AWG）中。 在这里，我们使用具有光学传递函数（或功率对电压（LV）曲线）的二次电光效应的电差分调制器，由P = （1 +γcosθ）/ 2其中不对称因子γ测量臂之间的消光比和相位差θ
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10.发明授权Methods and apparatus to make substantially uniform losses in optical cross connects 失效在光学交叉连接中使基本上均匀损失的方法和装置公开(公告)号：US07400792B2
公开(公告)日：2008-07-15
申请号：US11008735
申请日：2004-12-09
申请人： Jerry C. Chen
发明人： Jerry C. Chen
CPC分类号： G02B6/352 , G02B6/3546 , G02B6/356
摘要： A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes adjusting a curvature of the common beam steerer so that paths of the optical signals have substantially the same effective path length.
摘要翻译： 用于交叉连接光信号的方法包括使用公共波束控制器将一组光信号从一组输入端口引导到一组输出端口。 该方法还包括调整公共光束转向器的曲率，使得光信号的路径具有基本上相同的有效路径长度。
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