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公开(公告)号：US5965877A
公开(公告)日：1999-10-12
申请号：US39591
申请日：1998-03-16
CPC分类号： F42B3/113 , G01D5/268 , G01K11/3213 , G01M11/31 , G01M11/3109
摘要： A built-in-test capability is provided for determining the integrity of an optical fiber connecting: (a) an optical firing unit having a primary light source emitting a first wavelength, a test light source emitting a second wavelength different from the first wavelength, a mechanism both for coupling light from the light sources to the optical fiber and also for coupling the return light to a detector; and (b) an optically-initiated device which is coupled to a second end of the optical fiber. The apparatus includes a photoluminescent material disposed at a junction of the optically-initiated device and the second end of the optical fiber. In test mode, this photoluminescent material is exposed to the test light source, which results in photoluminescence at a third wavelength. The photoluminescent light travels through the optical fiber to the detector, and when detected indicates optical fiber continuity. The present system can also measure the temperature at the distal end of the optical fiber by detecting changes in the peak wavelength or amplitude associated with the third wavelength as a function of temperature. When the system is used to initiate ordnance, the detector can also detect the initial flash of light produced by the ordnance to provide confirmation that the ordnance has ignited.
摘要翻译： 提供了内置测试能力，用于确定光纤的完整性，其连接：（a）具有发射第一波长的初级光源的光学激发单元，发射不同于第一波长的第二波长的测试光源， 用于将来自光源的光耦合到光纤并且还用于将返回光耦合到检测器的机构; 和（b）耦合到光纤的第二端的光学起始装置。 该装置包括设置在光引发装置和光纤的第二端的结处的光致发光材料。 在测试模式下，该光致发光材料暴露于测试光源，这导致第三波长的光致发光。 光致发光光通过光纤传播到检测器，当被检测到时表示光纤的连续性。 本系统还可以通过检测作为温度的函数的与第三波长相关联的峰值波长或振幅的变化来测量光纤远端处的温度。 当系统用于启动弹药时，检测器还可以检测由弹药产生的光的初始闪光，以提供军药点燃的确认。
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公开(公告)号：US5729012A
公开(公告)日：1998-03-17
申请号：US739641
申请日：1996-10-30
CPC分类号： G01M11/3109 , F42B3/113 , G01D5/268 , G01K11/3213 , G01M11/31
摘要： A built-in-test capability is provided for determining the integrity of an optical fiber connecting: (a) an optical firing unit having a primary light source emitting a first wavelength, a test light source emitting a second wavelength different from the first wavelength, a mechanism both for coupling light from the light sources to the optical fiber and also for coupling the return light to a detector; and (b) an optically-initiated device which is coupled to a second end of the optical fiber. The apparatus includes a photoluminescent material disposed at a junction of the optically-initiated device and the second end of the optical fiber. In test mode, this photoluminescent material is exposed to the test light source, which results in photoluminescence at a third wavelength. The photoluminescent light travels through the optical fiber to the detector, and when detected indicates optical fiber continuity. When the system is used to initiate ordnance, the detector can also detect the initial flash of light produced by the ordnance to provide confirmation that the ordnance has ignited.
摘要翻译： 提供了内置测试能力，用于确定光纤的完整性，其连接：（a）具有发射第一波长的初级光源的光学激发单元，发射不同于第一波长的第二波长的测试光源， 用于将来自光源的光耦合到光纤并且还用于将返回光耦合到检测器的机构; 和（b）耦合到光纤的第二端的光学起始装置。 该装置包括设置在光引发装置和光纤的第二端的结处的光致发光材料。 在测试模式下，该光致发光材料暴露于测试光源，这导致第三波长的光致发光。 光致发光光通过光纤传播到检测器，当被检测到时表示光纤的连续性。 当系统用于启动弹药时，检测器还可以检测由弹药产生的光的初始闪光，以提供军药点燃的确认。
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公开(公告)号：US06704480B2
公开(公告)日：2004-03-09
申请号：US10347642
申请日：2003-01-21
申请人： Terrance L. Worchesky , Lance A. Wood , Feng Liu
发明人： Terrance L. Worchesky , Lance A. Wood , Feng Liu
IPC分类号： G02B634
CPC分类号： G02B6/124 , G02B6/12002 , G02B6/12004 , G02B6/12007 , G02B2006/12107 , G02B2006/12121 , G02B2006/12123
摘要： A demultiplexer is disclosed. The demultiplexer incorporates a reflective grating that is associated with a first waveguide through which a multiplexed optical signal may be transmitted. Individual wavelengths of light that have been reflected by the reflective grating are able to pass through a barrier layer which separates the first waveguide from a second waveguide. A plurality of photodetectors are associated with the second waveguide to read out the individual, wavelength-specific optical signals. The reflective grating is preferably formed on a surface of the first waveguide which projects away from the second waveguide, while the photodetectors are preferably formed at least in part by processing a surface of the second waveguide that projects away from the first waveguide. Both polarities of light are preferably accounted for/collected by the grating as well.
摘要翻译： 公开了解复用器。 解复用器包括与第一波导相关联的反射光栅，通过该第一波导可以传输复用的光信号。 已经被反射光栅反射的各个波长的光能够通过将第一波导与第二波导分离的阻挡层。 多个光电检测器与第二波导相关联以读出单独的波长特定光信号。 反射光栅优选地形成在远离第二波导的第一波导的表面上，而光电探测器优选地至少部分地通过处理突出于第一波导的第二波导的表面形成。 光的两极性优选也由光栅考虑/收集。
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公开(公告)号：US06549708B2
公开(公告)日：2003-04-15
申请号：US09923168
申请日：2001-08-06
申请人： Terrance L. Worchesky , Lance A. Wood , Feng Liu
发明人： Terrance L. Worchesky , Lance A. Wood , Feng Liu
IPC分类号： G02B634
CPC分类号： G02B6/124 , G02B6/12002 , G02B6/12004 , G02B6/12007 , G02B2006/12107 , G02B2006/12121 , G02B2006/12123
摘要： A demultiplexer is disclosed. The demultiplexer incorporates a reflective grating that is associated with a first waveguide through which a multiplexed optical signal may be transmitted. Individual wavelengths of light that have been reflected by the reflective grating are able to pass through a barrier layer which separates the first waveguide from a second waveguide. A plurality of photodetectors are associated with the second waveguide to read out the individual, wavelength-specific optical signals. The reflective grating is preferably formed on a surface of the first waveguide which projects away from the second waveguide, while the photodetectors are preferably formed at least in part by processing a surface of the second waveguide that projects away from the first waveguide. Both polarities of light are preferably accounted for/collected by the grating as well.
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公开(公告)号：US06731840B2
公开(公告)日：2004-05-04
申请号：US10314787
申请日：2002-12-09
IPC分类号： G02B634
CPC分类号： G02B6/124 , G02B6/12002 , G02B6/12004 , G02B6/12007 , G02B2006/12107 , G02B2006/12121 , G02B2006/12123
摘要： An optical switch is disclosed having what may be characterized as an optically-induced grating. One embodiment of such an optical switch includes first and second waveguides. An optical mask is formed on a side of the first waveguide opposite that which faces the second waveguide. Multiple slits exist in this optical mask in alignment with an output from a light source. Changing the mode of this light force changes the output of the light source directed onto the slits, and changes the state of the first and second waveguides from being optically decoupled to optically coupled.
摘要翻译： 公开了具有可以被表征为光学感应光栅的光开关。 这种光开关的一个实施例包括第一和第二波导。 光学掩模形成在与第二波导相对的第一波导的一侧。 在该光学掩模中存在与光源的输出对准的多个狭缝。 改变该光力的模式改变了被引导到狭缝上的光源的输出，并且使第一和第二波导的状态从光学解耦到光学耦合。
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公开(公告)号：US5572016A
公开(公告)日：1996-11-05
申请号：US428377
申请日：1995-04-25
CPC分类号： G01M11/31 , F42B3/113 , G01D5/268 , G01K11/3213
摘要： A built-in-test capability is provided for determining the integrity of an optical fiber connecting: (a) an optical firing unit having a primary light source emitting a first wavelength, a test light source emitting a second wavelength different from the first wavelength, a mechanism both for coupling light from the light sources to the optical fiber and also for coupling the return light to a filter/detector; and (b) an optically initiated device which is coupled to a second end of the optical fiber. The apparatus includes a photoluminescent material disposed at a junction of the optically initiated device and the optical-fiber-second-end. This photoluminescence material photoluminesces at a third wavelength (when exposed to the test light source), and the light travels through the optical fiber and, when detected indicates optical fiber continuity.
摘要翻译： 提供了内置测试能力，用于确定光纤的完整性，其连接：（a）具有发射第一波长的初级光源的光学激发单元，发射不同于第一波长的第二波长的测试光源， 用于将来自光源的光耦合到光纤并且还用于将返回光耦合到滤波器/检测器的机构; 和（b）耦合到光纤的第二端的光学启动器件。 该装置包括设置在光引发装置和光纤二端的连接处的光致发光材料。 该光致发光材料以第三波长（当暴露于测试光源时）照射光，并且光穿过光纤，并且当检测到时指示光纤连续性。
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公开(公告)号：US5566382A
公开(公告)日：1996-10-15
申请号：US570279
申请日：1995-12-11
CPC分类号： G02B26/08 , G01S13/9005
摘要： A SAR radar has an optical processor which uses an electrical-signal-to-light modulator. The modulator includes a tapped delay line which may be either analog or digital, and the signals tapped from the delay line are applied to an array of temporary storage elements, which in the case of analog signals may be a capacitive sample-and-hold, or for digital signals may include storage registers. In order to improve the signal-to-noise ratio (SNR) by comparison with a processor using an acoustic modulator, the signals tapped from the delay line are sampled at a display sampling rate, which is very low by comparison with the signal sampling rate or the highest frequency of interest, and the sampled signals are held until the next following display rate pulse. The signals held in the temporary storage elements are applied to the modulator elements, so that the optical pattern remains fixed for relatively long periods of time during which the optical processing can integrate photons for improved SNR.
摘要翻译： SAR雷达具有使用电信号到光调制器的光学处理器。 调制器包括可以是模拟或数字的抽头延迟线，并且从延迟线抽头的信号被施加到临时存储元件阵列，在模拟信号的情况下可以是电容采样保持， 或者对于数字信号可以包括存储寄存器。 为了通过与使用声学调制器的处理器进行比较来提高信噪比（SNR），从延迟线抽头的信号以显示采样率进行采样，其显示采样率与信号采样率相比非常低 或感兴趣的最高频率，并且保持采样信号直到下一个跟随显示速率脉冲。 保存在临时存储元件中的信号被施加到调制器元件，使得光学图案保持固定相对较长的时间段，在该时间期间光学处理可以集成光子以改善SNR。
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公开(公告)号：US6045888A
公开(公告)日：2000-04-04
申请号：US440280
申请日：1995-05-12
申请人： Wenpeng Chen , Shekhar Guha , Terrance L. Worchesky , Kenneth J. Ritter , Maher E. Tadros , Keith Kang
发明人： Wenpeng Chen , Shekhar Guha , Terrance L. Worchesky , Kenneth J. Ritter , Maher E. Tadros , Keith Kang
CPC分类号： G11C13/041 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： An optical memory material includes a two-photon storage component which can be written from a first to a second state in response to WRITE light, mixed with a signal component which fluoresces by one-photon absorption only at the written locations in response to READ light. The storage material may be a fulgide. The memory material may also include a frequency upconversion material to aid writing. Writing is performed by a spatial light modulator (SLM) with a dynamic focussing system, for concentrating sufficient power at WRITE locations for nonlinear two-photon absorption. Crosstalk is avoided during simultaneous writing in some embodiments, by spacing the individual WRITE beams apart by an integer number of inter-beam spacings, so that non-adjacent datels are written simultaneously in a "paragraph," and the non-written areas are written at a different time with different paragraphs. The memory material may be translated relative to the SLM to access different paragraphs, or accessed by an electronically sparsed SLM. Reading uses a sheet of READ light traversing the pages of written material to cause the signal component to fluoresce, and imaging the fluorescent pattern onto a detector array. The memory material may be stacked in layers, spaced apart by light waveguides, for guiding the READ beam to the page to be read. In another embodiment, writing and erasure are performed by a modulated quasi-one-dimensional sheet of light, intersecting a second, unmodulated sheet of light at a column within the memory material.
摘要翻译： 光学存储材料包括双光子存储组件，其可以响应于写入光而从第一状态到第二状态写入，仅响应于读取光而在写入位置处与单光子吸收发荧光的信号分量混合 。 存储材料可以是一种俘获物。 存储器材料还可以包括用于辅助写入的上变频材料。 写入由具有动态聚焦系统的空间光调制器（SLM）执行，用于在写入位置集中足够的功率用于非线性双光子吸收。 在一些实施例中，通过将各个写入光束间隔开整数个光束间距来避免串扰，从而在“段落”中同时写入不相邻的数据，并且写入非写入区域 在不同的段落与不同的段落。 存储器材料可以相对于SLM被翻译以访问不同的段落，或者通过电子分段的SLM访问。 读数使用一张通过写入材料页面的READ光线使信号分量发荧光，并将荧光图案成像到检测器阵列上。 存储器材料可以堆叠成层，由光波导间隔开，用于将读取光束引导到要读取的页面。 在另一个实施例中，写入和擦除通过调制的准一维光束进行，与存储器材料内的列处的第二未调制的光束相交。
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公开(公告)号：US5472759A
公开(公告)日：1995-12-05
申请号：US168733
申请日：1993-12-16
申请人： Wenpeng Chen , Shekhar Guha , Terrance L. Worchesky , Kenneth J. Ritter , Maher E. Tadros , Keith Kang
发明人： Wenpeng Chen , Shekhar Guha , Terrance L. Worchesky , Kenneth J. Ritter , Maher E. Tadros , Keith Kang
CPC分类号： G11C13/041 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： An optical memory material includes a two-photon storage component which can be written from a first to a second state in response to WRITE light, mixed with a signal component which fluoresces by one-photon absorption only at the written locations in response to READ light. The storage material may be a fulgide. The memory material may also include a frequency upconversion material to aid writing. Writing is performed by a spatial light modulator (SLM) with a dynamic focussing system, for concentrating sufficient power at WRITE locations for nonlinear two-photon absorption. Crosstalk is avoided during simultaneous writing in some embodiments, by spacing the individual WRITE beams apart by an integer number of inter-beam spacings, so that non-adjacent datels are written simultaneously in a "paragraph," and the non-written areas are written at a different time with different paragraphs. The memory material may be translated relative to the SLM to access different paragraphs, or accessed by an electronically sparsed SLM. Reading uses a sheet of READ light traversing the pages of written material to cause the signal component to fluoresce, and imaging the fluorescent pattern onto a detector array. The memory material may be stacked in layers, spaced apart by light waveguides, for guiding the READ beam to the page to be read. In another embodiment, writing and erasure are performed by a modulated quasi-one-dimensional sheet of light, intersecting a second, unmodulated sheet of light at a column within the memory material.
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公开(公告)号：US5488504A
公开(公告)日：1996-01-30
申请号：US109550
申请日：1993-08-20
CPC分类号： B82Y20/00 , G02F1/218 , G02F1/017 , G02F2203/12
摘要： A device for converting a set of electronic signals that represent an image into a coherent image includes a two-dimensional array of asymmetric Fabry-Perot (ASFP), quantum-well-based optical modulators connected on a pixel-by-pixel basis to a two-dimensional array of drive circuits located on an integrated circuit. Electronic signals received by the integrated circuit cause the pixel drive circuits to change a bias voltage applied across the optical modulator section and, thereby, change the optical properties of the optical modulator section of the device. The two-dimensional array can be used to impart intensity-only, phase-only, or phase-and-intensity variations onto a beam of coherent laser light incident on the array. This coherent image can be used with other optical elements to form optical processing machines and optical storage devices.
摘要翻译： 用于将表示图像的一组电子信号转换为相干图像的装置包括不对称Fabry-Perot（ASFP）的二维阵列，基于量子阱的光学调制器，以逐个像素为基础连接到 位于集成电路上的驱动电路的二维阵列。 由集成电路接收的电子信号使得像素驱动电路改变施加在光调制器部分上的偏置电压，从而改变器件的光调制器部分的光学特性。 二维阵列可用于将强度，相位或相位和强度变化赋予入射到阵列上的相干激光束。 该相干图像可以与其他光学元件一起使用以形成光学处理机器和光学存储设备。
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