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公开(公告)号：US3795434A
公开(公告)日：1974-03-05
申请号：US3795434D
申请日：1972-07-20
Applicant: IBM
Inventor： ASH E
CPC classification number: G02F1/035 , G02F2203/12 , G10K11/24
Abstract: Waveguides for use with guided elastic waves and guided optical waves wherein the lateral leakage rate of the waveguides is very small. The decreased leakage rate is effected by longitudinal strip regions or gratings periodically spaced on either side of the main waveguide region. These periodically spaced gratings rapidly decrease the rate of the evanescant portion of the wave according to a geometric law. Further, by controlling the amount of discontinuity presented by the periodic gratings the rate of evanescance may be controlled.
Abstract translation: 用于导向弹性波和导向光波的波导，其中波导的横向泄漏速率非常小。 降低的泄漏率由在主波导区域的任一侧上周期性间隔的纵向条带区域或光栅来实现。 这些周期性间隔的光栅根据几何定律快速地降低了波的evanescant部分的速率。 此外，通过控制周期性光栅所呈现的不连续量，可以控制延音速率。
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2.发明授权
公开(公告)号：US3753157A
公开(公告)日：1973-08-14
申请号：US3753157D
申请日：1971-06-30
Applicant: IBM
CPC classification number: G02F1/3132 , G02B6/2821 , G02B6/4259 , G02B6/4291 , G02F1/01 , H03H9/02787
Abstract: Couplers are disclosed for use with guided elastic waves and guided optical waves. The coupling is effected by means of a coupling region having a different phase velocity characteristic than that of the waveguide. The presence of the coupling region causes the waves traveling in the waveguide to become highly leaky. These leaky waves then encounter a second waveguide or transducer and are coupled into it. Utilizing the electroacoustic effect in the acoustic wave devices and the electrooptic effect in the optical wave devices, the phase velocity characteristic of the coupling region is controllable, permitting switchable couplers.
Abstract translation: 公开了用于引导弹性波和引导光波的耦合器。 通过具有与波导的相位速度特性不同的耦合区域实现耦合。 耦合区域的存在导致在波导中行进的波浪变得高度泄漏。 这些泄漏波然后遇到第二个波导或换能器并被耦合到其中。 利用声波器件中的电声效应和光波器件中的电光效应，耦合区域的相速度特性是可控的，允许可切换耦合器。
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