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公开(公告)号：US4163982A
公开(公告)日：1979-08-07
申请号：US792192
申请日：1977-04-29
IPC分类号： H01L45/00
CPC分类号： H01L45/1206 , H01L45/085 , H01L45/146
摘要： A solid state electrical switch is described which exhibits high off/on resistance ratios and low insertion loss. An additional advantage is that removal of the switching energy does not alter the status (off or on) of the switch. The active solid state material in the switch is an electrochromic material (e.g., tungsten trioxide) which undergoes a transformation from insulator to metallic conductor on injection of certain ions.
摘要翻译： 描述了一种固态电开关，其表现出高的断开/接通电阻比和低插入损耗。 另外的优点是切换能量的去除不会改变开关的状态（关闭或打开）。 开关中的活性固态材料是在注入某些离子时经历从绝缘体转变为金属导体的电致变色材料（例如三氧化钨）。
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公开(公告)号：US4165496A
公开(公告)日：1979-08-21
申请号：US861288
申请日：1977-12-16
CPC分类号： G02B6/2817
摘要： An optical fiber tap is described which comprises a beamsplitter formed by positioning bevelled, parallel endfaces of two segments of optical fiber in coaxial alignment and in close proximity to each other. A suitable dielectric film, such as air, fills the gap between the endfaces. Light propagating into the tap from the first fiber segment is partially reflected and partially refracted at the bevelled endfaces. The refracted portion enters the second fiber segment and the reflected portion leaves the tap and is detected by a photodetector. By choice of the proper angle for the bevelled endfaces, the tap can be made substantially mode independent. A greater degree of mode independence can be obtained by interposing a steady-state mode exciter between the light source and the beamsplitter. The tap is particularly useful for semiconductor junction laser stabilization by the feedback arrangement described herein since the ratio of the intensity of the reflected portion to that of the refracted portion is substantially constant. A package assembly for use in the feedback arrangement is also described.
摘要翻译： 描述了一种光纤抽头，其包括通过将两个光纤段的平行端面以同轴对准并且彼此靠近的方式定位成倾斜的平行端面而形成的分束器。 诸如空气的合适的介电膜填充端面之间的间隙。 从第一纤维段传播到龙头中的光部分地被反射并在倾斜的端面部分地折射。 折射部分进入第二光纤段，反射部分离开水龙头并由光电检测器检测。 通过选择倾斜端面的适当角度，可以使水龙头基本上与模式无关。 通过在光源和分束器之间插入稳态模式激励器可以获得更大程度的模式独立性。 由于反射部分的强度与折射部分的强度之比基本上是恒定的，因此通过本文所述的反馈装置对于半导体结激光器稳定性特别有用。 还描述了用于反馈布置的封装组件。
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