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1. 发明授权

US4012113A Adjustable optical switch or modulator 失效
标题翻译：可调光开关或调制器
公开(公告)号：US4012113A
公开(公告)日：1977-03-15
申请号：US641649
申请日：1975-12-17
申请人： Herwig Werner Kogelnik , Ronald Vernon Schmidt
发明人： Herwig Werner Kogelnik , Ronald Vernon Schmidt
IPC分类号： G02B6/12 , G02F1/03 , G02F1/05 , G02F1/313 , G02B5/16
CPC分类号： G02F1/3132 , G02F2201/125
摘要： An optical switch of the switched directional coupler type is provided with an adjustable cross-over state as well as an adjustable straight-through state, in order to provide reduced crosstalk in the cross-over state, for example, when the switches are used in an optical switching system. The improved switch is based on asynchronous or phase-mismatched coupling between two parallel optical strip guides driven by electrodes to which the voltage is applied. In order to use phase-mismatched coupling instead of phase-matched coupling for the cross-over state, in order thereby to obtain electrical adjustability of that state, the driving electrodes are split into two or more sequential sections, thereby defining two sequential coupling sections of the parallel optical strip guides. The cross-over coupling is then achieved by switching the mismatch conditions so that at the point of partial coupling the "nonoriginating" guide appears to the coupled optical waves to be the "originating" guide.
摘要翻译：切换定向耦合器类型的光开关具有可调整的交叉状态以及可调的直通状态，以便在交叉状态下提供减小的串扰，例如当开关用于光交换系统。改进的开关基于由施加电压的电极驱动的两个平行光学条带引导之间的异步或相位失配的耦合。为了使用相位不匹配的耦合而不是用于交叉状态的相位匹配耦合，为了获得该状态的电可调性，驱动电极被分成两个或更多个顺序部分，由此限定两个顺序的耦合部分的平行光学条带引导件。然后通过切换不匹配条件来实现交叉耦合，使得在部分耦合点处，耦合光波的“非导航”引导件看起来是“始发”引导。

2. 发明授权

US3946338A Acoustic wave devices involving perturbation of acoustic velocity by diffusion of metals 失效
标题翻译：涉及通过金属扩散扰动声速的声波装置
公开(公告)号：US3946338A
公开(公告)日：1976-03-23
申请号：US584765
申请日：1975-06-09
申请人： Ronald Vernon Schmidt
发明人： Ronald Vernon Schmidt
IPC分类号： H03H9/145 , B06B1/00 , G10K11/24 , G10K11/36 , H03H3/08 , H03H9/00 , H03H9/02 , H03H9/30 , H03H9/64 , H03H9/72 , H04B11/00 , H03H9/26 , H01L41/18 , H03H9/32
CPC分类号： H04B11/00 , B06B1/00 , G10K11/24 , G10K11/36 , H03H9/02622 , H03H9/02708 , H03H9/02881 , H03H9/42 , H03H9/6486 , H03H9/72
摘要： Acoustic waveguides, acoustic filters and acoustic reflectors are based upon the discovery of increased acoustic wave velocity in materials such as lithium niobate and lithium tantalate into which a metal such as titanium, nickel or chromium has been diffused. Velocity increases larger than 1 percent have been obtained; and negligible effect on acoustic loss is incurred thereby. The technique and the resulting devices result in a simpler structure than provided by the metallic strips or the ion beam etched surface regions of prior acoustic devices in which velocity perturbations of comparable magnitude have been desired.
摘要翻译：声波导，声学滤波器和声反射器基于在诸如钛，镍或铬的金属已经扩散到其中的诸如铌酸锂和钽酸锂的材料中增加的声波速度的发现。速度提高大于1％已经获得; 并且由此产生对声学损失的微不足道的影响。该技术和所得到的装置导致比先前的声学装置的金属条或离子束蚀刻的表面区域提供的结构更简单的结构，其中期望具有相当大小的速度扰动。

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