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31. 发明授权

US4012120A Guided wave acousto-optic device 失效
标题翻译：导波声光装置
公开(公告)号：US4012120A
公开(公告)日：1977-03-15
申请号：US577266
申请日：1975-05-14
申请人： Reynold S. Kagiwada , David B. Hall
发明人： Reynold S. Kagiwada , David B. Hall
IPC分类号： G02F1/125 , G06E3/00 , H03H9/26 , G02F1/11 , G06F7/56 , H03H9/32
CPC分类号： G02F1/125 , G06E3/001
摘要： An acousto-optic device suitable as a correlator, convolution integrator or Fourier transform device. The device comprises a piezoelectric substrate or crystal such as lithium niobate. The substrate is covered by a thin, outer layer having higher index of refraction than the substrate and a thickness on the order of 50 micrometers. Two acoustic transducers such as interdigital transducers are disposed on opposite ends of the crystal to launch two acoustic surface waves in opposite directions. A laser beam is guided through the outer layer and is coupled with the two acoustic waves to generate either a correlation function, a Fourier transform or a convolution integral depending on the signals impressed thereon.
摘要翻译：适合作为相关器，卷积积分器或傅立叶变换装置的声光装置。该器件包括压电基片或诸如铌酸锂的晶体。衬底被薄的外层覆盖，其具有比衬底更高的折射率，并且厚度为50微米。两个声换能器如叉指换能器设置在晶体的相对端上，以相反的方向发射两个声表面波。激光束被引导穿过外层并且与两个声波耦合，以产生相关函数，傅立叶变换或卷积积分，其取决于其上施加的信号。

32. 发明授权

US3931595A Optical waveguide modulator using single crystals of TlGaSe.sub.2 OR.beta.Tl.sub.2 失效
标题翻译：使用TlGaSe的单晶的光波导调制器（hd 2 {b OR {62TlInS {HD 2
公开(公告)号：US3931595A
公开(公告)日：1976-01-06
申请号：US463338
申请日：1974-04-23
申请人： Thelma J. Isaacs , Milton Gottlieb , John D. Feichtner
发明人： Thelma J. Isaacs , Milton Gottlieb , John D. Feichtner
IPC分类号： G02F1/125 , G02F1/11 , H01S3/10
CPC分类号： G02F1/125
摘要： An optical waveguide modulator is disclosed which uses single crystals of TlGaSe.sub.2 or TlInS.sub.2. The optical waveguide modulator is used to impress a signal upon a light beam traveling in a waveguide. Monochromatic light is guided along a thin plate of the crystal. Acoustic waves are generated which move across the thickness of the crystal, modulating the light. The frequency, polarization, or mode of the light can be modulated by the acoustic waves.
摘要翻译：公开了一种使用TlGaSe2或TlInS2单晶的光波导调制器。光波导调制器用于在波导中行进的光束上施加信号。单色光沿着晶体的薄板被引导。产生移动穿过晶体厚度的声波，调制光。光的频率，极化或模式可以由声波调制。

33. 发明授权

US3874782A Light-guiding switch, modulator and deflector employing antisotropic substrate 失效
标题翻译：导光开关，调制器和偏转器采用抗菌底物
公开(公告)号：US3874782A
公开(公告)日：1975-04-01
申请号：US40246973
申请日：1973-10-01
申请人： BELL TELEPHONE LABOR INC
发明人： SCHMIDT RONALD VERNON
IPC分类号： G02F1/01 , G02F1/035 , G02F1/125 , G02B5/14
CPC分类号： G02F1/035 , G02F1/011 , G02F1/125
摘要： There is disclosed a light beam switching, modulating and deflecting device which is comprised of a thin dielectric film or strip waveguide deposited on an anisotropic (i.e., uniaxial) crystalline substrate. The guide and substrate parameters are selected so that one polarization of an optical wave is supported as a guided mode in the guide and the other, orthogonal polarization is not supported. Applied electric field components or acoustic strain components interact with the substrate to cause a coupling of the guided wave from the supported polarization to the unsupported polarization. The wave, upon being coupled to the unsupported polarization, is automatically and immediately radiated out of a guided mode into a freely propagating substrate mode. The unique principle of operation of the device, involving a combination of polarization discrimination in the guide and polarization coupling through an electro-optic or acousto-optic modulation of the substrate, eliminates the need for phase-matching. Noncritical, spatially uniform electric field or acoustic strain components applied to the substrate can thus provide the desired effect. The structure and operation of the device are thus generally simpler than those of similar prior art alternatives.
摘要翻译：公开了一种光束切换，调制和偏转装置，其由沉积在各向异性（即单轴）晶体衬底上的薄介电膜或带状波导构成。选择引导和衬底参数，使得光波的一个极化作为引导中的引导模式被支持，而另一个偏振不被支持。施加的电场分量或声应变分量与衬底相互作用以引起从被支撑的偏振到非支撑极化的导波的耦合。该波在被耦合到未支持的极化时被自动并立即从引导模式发射到自由传播的基板模式中。该器件的独特操作原理涉及引导中的偏振鉴别和通过基板的电光或声光调制的偏振耦合的组合，消除了对相位匹配的需要。因此，施加到基板上的非临界空间均匀电场或声应变分量可以提供期望的效果。因此，装置的结构和操作通常比类似的现有技术替代方案的结构和操作简单。

34. 发明授权

US3822929A Electronically tunable optical filter using acoustic waves 失效
标题翻译：使用声波的电子式可调光滤波器
公开(公告)号：US3822929A
公开(公告)日：1974-07-09
申请号：US14748671
申请日：1971-05-27
申请人： IBM
发明人： LEAN E , HEIDRICH P , KUHN L
IPC分类号： G02F1/125 , G02F1/16
CPC分类号： G02F1/125
摘要： A tunable optical filter suitable for use in integrated optical circuits including the combination of a substrate having an optical waveguide such as a thin film thereon. Means such as an optical fiber or grating is provided for introducing light waves in a first mode into the waveguide. An acoustic transducer driven by a tunable electronic signal source is used to propagate acoustic waves on the surface of the waveguide. The optical and acoustic waves interact to produce another optical wave having a mode different than the original optical wave when phase matching conditions are satisfied. A mode filter is located in the waveguide to block the original optical wave and pass the second optical wave.
摘要翻译：一种适用于集成光电路的可调光滤波器，包括其上具有薄膜等光波导的基板的组合。提供诸如光纤或光栅的装置用于将第一模式的光波引入到波导中。由可调电子信号源驱动的声换能器用于在波导表面上传播声波。当满足相位匹配条件时，光和声波相互作用以产生具有与原始光波不同的模式的另一光波。模式滤波器位于波导中以阻挡原始光波并通过第二光波。

35. 发明授权

US3560724A Optical correlators 失效
标题翻译：光耦合器
公开(公告)号：US3560724A
公开(公告)日：1971-02-02
申请号：US3560724D
申请日：1968-08-19
申请人： US NAVY
发明人： CONDELL WILLIAM J JR
IPC分类号： G01S13/58 , G02F1/11 , G02F1/125 , G02F1/19 , G06E1/02 , G06E3/00 , G06F17/15 , G06F15/34 , G06G7/19
CPC分类号： G06E3/001 , G01S13/587 , G02F1/11 , G02F1/125 , G02F1/195 , G06E1/02
摘要： In one type of optical correlator disclosed, a Raleigh surface wave coded in accordance with electrical signal information is propagated down a solid, light-conducting member and changes the boundary surface of this member so as to permit light which is normally being propagated therethrough in a substantially total internal reflected mode to emerge therefrom and impinge on a spaced correlation mask. If the coded surface wave and the mask codings are in agreement, a maximum amount of light will leave the solid member, pass through transparent sections of the mask and arrive at a photodetector.

36. 发明公开

US20240369901A1 INTEGRATED DUAL-WAVEGUIDE ACOUSTO-OPTIC MODULATOR 审中-公开
公开(公告)号：US20240369901A1
公开(公告)日：2024-11-07
申请号：US18570953
申请日：2022-04-15
申请人： Massachusetts Institute of Technology
发明人： Gavin WEST , Rajeev J. RAM
IPC分类号： G02F1/335 , G02F1/125
CPC分类号： G02F1/335 , G02F1/125 , G02F2201/307
摘要： An integrated acousto-optic modulator operates with an extremely high extinction ratio (e.g.,>50 dB) thanks to two widely separated two-dimensional (2D) waveguides. These 2D waveguides are formed on or adjacent to a one-dimensional (ID) wave-guide far enough apart (e.g., 10-100 pm apart) to prevent evanescent coupling between them. An acoustic transducer formed on the surface of the ID waveguide switches light from one 2D waveguide to the other 2D waveguide via the ID waveguide. The acoustic wave emitted by the acoustic transducer forms a traveling grating that overlaps with one 2D waveguide. diffracting light from that 2D waveguide into the ID waveguide, which guides the light to the other 2D waveguide. A lateral grating coupler diffracts this light from the ID waveguide into a mode guided by the other 2D waveguide. This acoustic modulator acts as a switch suitable for use in quantum and atomic systems.

37. 发明授权

US12078526B2 Reduced complexity polarization combining method for coherent DAS 有权
公开(公告)号：US12078526B2
公开(公告)日：2024-09-03
申请号：US17522844
申请日：2021-11-09
申请人： NEC Laboratories America, Inc.
发明人： Junqiang Hu
IPC分类号： G06F11/30 , G01H9/00 , G02F1/125 , H04B10/61
CPC分类号： G01H9/004 , G02F1/125 , H04B10/613 , H04B10/6151
摘要： Aspects of the present disclosure are directed to improved systems, methods, and structures providing coherent detection of DAS. In sharp contrast to the prior art, systems, methods, and structures according to aspects of the present disclosure advantageously reduce the beating diversity terms such that required memory and bandwidth are reduced over the art.

38. 发明公开

US20230213377A1 HOMODYNE TIME-DOMAIN ACOUSTO-OPTIC IMAGING FOR LOW-GAIN PHOTODETECTORS 审中-公开
公开(公告)号：US20230213377A1
公开(公告)日：2023-07-06
申请号：US18090837
申请日：2022-12-29
申请人： TECHNION RESEARCH & DEVELOPMENT FOUNDATION LIMITED , NRC SOREQ
发明人： Amir ROZENTAL , Ahiad LEVI , Yoav HAZAN , Aner LEV
IPC分类号： G01H9/00 , G02F1/335 , G02F1/125
CPC分类号： G01H9/006 , G02F1/125 , G02F1/335
摘要： A laser system for acousto-optics imaging is disclosed. The system comprises: a continuous wave laser source; a first beam splitter configured to split a laser emitted by the continuous wave laser source into a lasing beam and a reference beam; a lasing optical fiber diffusing the lasing beam to a subject; a reference optical fiber providing the reference beam; a collecting optical fiber capable of receiving a scattered beam from the subject; a second beam splitter for merging the scattered and reference beams into a merged beam, and at least one photodetector assembly with a bandwidth higher than the ultrasound frequency to detect the merged beam.

39. 发明授权

US11612768B2 In-medium sculpted tunable graded index lenses 有权
公开(公告)号：US11612768B2
公开(公告)日：2023-03-28
申请号：US16522331
申请日：2019-07-25
申请人： Carnegie Mellon University
发明人： Maysamreza Chamanzar , Matteo Giuseppe Scopelliti , Yasin Karimi Chalmiani
IPC分类号： A61N7/00 , A61B5/00 , G02F1/125
摘要： Disclosed herein is a novel technique that employs non-invasive ultrasound for spatiotemporal modulation of the refractive index in a medium to define and control the trajectory of light within the medium itself, thereby creating a virtual sculpted lens. By varying the amplitude of ultrasonic waves in the medium, the numerical aperture (NA) value of the virtual sculpted lens can be changed. The location of the focus of the virtual sculpted lens can be precisely scanned within a scattering tissue.

40. 发明授权

US11454763B2 Light source assembly 有权
公开(公告)号：US11454763B2
公开(公告)日：2022-09-27
申请号：US17234361
申请日：2021-04-19
申请人： NKT Photonics A/S
发明人： Thomas Feuchter , Irnis Kubat , Timur Iskhakov
IPC分类号： G02B6/28 , G02F1/125 , F21S41/24 , F21S41/16 , F21S41/141 , F21S41/20 , G02B6/43
摘要： A light source assembly having N outputs, the assembly including: a light source arrangement arranged for supplying light to M inputs, where M an N independently of each other are integers and where M≥2 and M≥N; at least one optical couplers, each having at least one input arm and a plurality of output arms; and an integer number, P, of mode scramblers. The light source arrangement may include a broadband light source and a multimode coupler configured for receiving one or more light beams from the light source arrangement, wherein the one or more light beams being derived from the broadband light source and wherein a mode scrambler is arranged for mode scrambling one of said light beams before it enters the multimode coupler.

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