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公开(公告)号：US20130120754A1
公开(公告)日：2013-05-16
申请号：US13296317
申请日：2011-11-15
IPC分类号： G01J3/453
CPC分类号： G01J3/26 , G01J3/2823 , G01J3/4532 , G01J2003/064
摘要： Micro-spectral sensors and methods are presented in which a Fizeau wedge interference filter is disposed between a focal plane array and a visible scene with an increasing wedge filter dimension varying along a scan direction, where the scene is scanned along the FPA to obtain light intensity measurements of a given scene location at different times using different FPA sensor elements through different wedge filter thicknesses, and the measurements correlated to the given scene location are Fourier transform to generate spectral data for the location.
摘要翻译： 提出了微光谱传感器和方法，其中Fizeau楔形干涉滤光器设置在焦平面阵列和可见场景之间，其中沿着扫描方向变化的楔形滤波器尺寸增加，其中沿FPA扫描场景以获得光强度 使用不同的FPA传感器元件通过不同的楔形滤波器厚度在不同时间对给定场景位置的测量以及与给定场景位置相关的测量进行傅立叶变换以产生位置的光谱数据。
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公开(公告)号：US4376248A
公开(公告)日：1983-03-08
申请号：US241290
申请日：1981-03-06
IPC分类号： G01R33/02 , G01R33/032 , G02F1/01 , G02B5/14
CPC分类号： G01R33/02 , G01R33/0327 , G02F1/0134
摘要： A sensing element of magnetostrictive material associated with an optical fiber of an interferometer arm defining apparatus for detecting magnetic fields. The magnetostrictive material is adhered in close co-extensive adjacency with the optical fiber and in the presence of a magnetic field undergoes responsive longitudinal dimension changes which strains the optical fiber and induces a strain related phase shift in an optically propagating beam in the fiber detectable by interferometry.
摘要翻译： 与用于检测磁场的干涉仪臂定义装置的光纤相关联的磁致伸缩材料的感测元件。 磁致伸缩材料与光纤紧密地相邻地附着，并且在存在磁场的情况下经历响应的纵向尺寸变化，其使光纤变形并且在纤维中的光学传播光束中引起应变相移相移，可由 干涉测量。
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公开(公告)号：US4291939A
公开(公告)日：1981-09-29
申请号：US889666
申请日：1978-03-24
IPC分类号： G02F1/225 , G02F1/313 , H04B10/145 , G02B5/174
CPC分类号： H04B10/50 , G02F1/225 , G02F1/3132 , G02F1/3136 , G02F2201/12 , G02F2203/06
摘要： Optical channel waveguide switches/modulators having polarization-independent operation are disclosed. Electrodes are disposed in proximity to the waveguide channels to provide an electric field that is primarily horizontally directed in at least one channel and an electric field that is primarily vertically directed in at least one channel. Since the different electric-field orientations electrooptically induce different changes in the index of refraction for waves of different polarization in the guides, this permits improved electrooptic control over both TM-like and TE-like modes. Embodiments of both modal interference switches/modulators and branching waveguide switches/modulators are disclosed.
摘要翻译： 公开了具有偏振无关操作的光通道波导开关/调制器。 电极设置在波导通道附近，以提供主要在至少一个通道中水平定向的电场和主要垂直指向至少一个通道的电场。 由于不同的电场取向在导光体中电光学上引起不同偏振波的折射率的不同变化，这允许改善TM样和TE样模式的电光控制。 公开了模式干扰开关/调制器和分支波导开关/调制器的实施例。
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4.发明授权Acoustic-wave convolvers utilizing diffused waveguides and beam compression techniques 失效利用扩散波导和光束压缩技术的声波卷积器
公开(公告)号：US4181904A
公开(公告)日：1980-01-01
申请号：US932248
申请日：1978-08-09
CPC分类号： G06G7/195
摘要： Two input transducers launch oppositely-propagating acoustic surface waves on a piezoelectric substrate. The waves are compressed to a smaller beamwidth and then laterally confined in a diffused channel waveguide where non-linear interaction occurs at increased energy densities due to the beam compression. In one embodiment the beam compression is accomplished in multistrip couplers. In another embodiment, diffused horn-shaped channels are provided for compressing the beamwidth. Both piezoelectric and semiconductor convolvers are disclosed.
摘要翻译： 两个输入传感器在压电基板上发射相反传播的声表面波。 波被压缩到较小的波束宽度，然后横向限制在扩散通道波导中，由于波束压缩，在增加的能量密度下发生非线性相互作用。 在一个实施例中，束压缩是在多段耦合器中完成的。 在另一个实施例中，提供扩散的喇叭形通道用于压缩波束宽度。 公开了压电和半导体卷取器。
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公开(公告)号：US3963310A
公开(公告)日：1976-06-15
申请号：US389776
申请日：1973-08-20
IPC分类号： G02B6/126 , G02F1/1333 , G02F1/295 , G02F1/13
CPC分类号： G02F1/1326 , G02B6/126 , G02F1/295
摘要： An optical waveguide, which combines a thin film of aligned liquid-crystal sandwiched between two dielectric plates, is capable of performing many active optical processing functions such as modulation switching and beam deflection.
摘要翻译： 结合夹在两个电介质板之间的取向液晶薄膜的光波导能够执行许多有效的光学处理功能，例如调制切换和光束偏转。
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公开(公告)号：US3954323A
公开(公告)日：1976-05-04
申请号：US344404
申请日：1973-03-23
CPC分类号： G02F1/035
摘要： An optical waveguide linear modulator array comprising an optical waveguide having an input coupler and an output coupler. The waveguide or substrate is formed of electrooptical material with different shaped electrodes secured thereto. An electrical field applied between the electrodes modulates the radiation passing through the waveguide so that the radiation may be phase shifted or shaped into desired outputs.
摘要翻译： 一种光波导线性调制器阵列，包括具有输入耦合器和输出耦合器的光波导。 波导或基板由固定有不同形状的电极的电光材料形成。 施加在电极之间的电场调制通过波导的辐射，使得辐射可以相移或成形为期望的输出。
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公开(公告)号：US4593968A
公开(公告)日：1986-06-10
申请号：US227340
申请日：1981-01-22
CPC分类号： G02B6/2558 , G02B6/2804 , G02B6/2835 , G02B6/443
摘要： A coupler for coupling light from one single mode optical fiber to another. Two or more optical fibers are provided in twisted or braided adjacency so that the evanescent field of one optical fiber is coupled into at least one other fiber for dividing the power therebetween. Means are provided for coextensively supporting and encapsulating the optical fibers to stabilize and protect them under demanding environmental conditions resulting from temperature variations, physical shock and vibration.
摘要翻译： 用于将来自单模光纤到另一个单模光纤的光耦合的耦合器。 提供两个或多个光纤以扭曲或编织邻接的方式，使得一个光纤的消逝场耦合到至少一个其它光纤中，以分隔它们之间的功率。 提供了用于共同支撑和封装光纤以在由温度变化，物理冲击和振动引起的苛刻环境条件下稳定和保护光纤的装置。
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公开(公告)号：US4378497A
公开(公告)日：1983-03-29
申请号：US241289
申请日：1981-03-06
IPC分类号： G01D5/353 , G01R33/032 , G02B5/14
CPC分类号： G01D5/35303 , G01R33/0327
摘要： An optical fiber sensor for detecting the presence of magnetic fields. Light carrying optical fibers are arranged in the form of a dual path interferometer wherein the separate paths define sensing and reference arms. The sensing arm is associated with magnetostrictive material for defining a sensing element which in the presence of a magnetic field undergoes dimensional changes to stretch the optical fiber to change its optical path length thus causing a detectable phase shift in light passing therethrough when compared with the same light passing through the optical fiber of the reference arm. The sensing element is isolated from thermal and acoustic perturbations thus permitting low frequency magnetic field detection.
摘要翻译： 一种用于检测磁场存在的光纤传感器。 携带光的光纤被布置成双路干涉仪的形式，其中分开的路径限定感测和参考臂。 感测臂与磁致伸缩材料相关联，用于限定感测元件，在感应元件存在的情况下，磁场经历尺寸变化以拉伸光纤以改变其光程长度，从而导致与之相比通过的光的可检测相移 光通过参考臂的光纤。 感测元件与热和声扰动隔离，从而允许低频磁场检测。
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公开(公告)号：US4263570A
公开(公告)日：1981-04-21
申请号：US954376
申请日：1978-10-24
CPC分类号： H01P1/182
摘要： A reciprocal phase shifter for optically controlling the phase of microwa millimeter, and submillimeter wavelength electromagnetic energy includes a source of light and a waveguide which comprises an interaction material for absorbing the light and forming a plasma of electron-hole pairs within the material. The plasma interacts with a traveling wave in the waveguide. The speed at which the wave propagates changes in the interaction region and thereby changes the phase of the wave.
摘要翻译： 用于光学控制微波，毫米波和亚毫米波长电磁能的相位的互相移相器包括光源和波导，其包括用于吸收光并在材料内形成电子 - 空穴对的等离子体的相互作用材料。 等离子体与波导中的行波相互作用。 波传播的速度在相互作用区域中变化，从而改变波的相位。
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公开(公告)号：US4213670A
公开(公告)日：1980-07-22
申请号：US841859
申请日：1977-10-06
CPC分类号： G02B6/2808
摘要： A planar, optical star and access coupler for multiterminal communication systems which use multimode fibers as the transmission line either as a plurality of single fiber lines, in multichannel fiber cable or in minibundles. The fibers are placed in a row so that the core ends abut the end of a high-aspect angle rectangular cross section clad ribbon fiber which is preferably not as thick as the diameter of the core of the individual fibers for optimum packing fraction loss. Optical radiation, such as from a laser or light-emitting diode, entering the ribbon-fiber mixer element from all of the fibers on one end will be mixed by the ribbon fiber and be transmitted equally on each of the output fibers. Also, radiation from any one fiber will be divided equally between all of the transmission fibers on the opposite end of the ribbon fiber.
摘要翻译： 一种用于多终端通信系统的平面光学星形和接入耦合器，其使用多模光纤作为传输线，作为多条单根光纤线路，在多通道光缆中或在微型结构中。 将纤维放置成一排，使得芯部端部邻接高方形角矩形横截面包覆带状纤维的端部，该纤维优选地不像单根纤维芯部的直径那样厚，以获得最佳的包装分数损失。 诸如来自激光器或发光二极管的光辐射从一端的所有光纤进入带状纤维混合器元件将被带状光纤混合并在每个输出光纤上均匀地传输。 此外，来自任何一根光纤的辐射将在带状光纤的相对端上的所有传输光纤之间平均分配。
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