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    • 8. 发明授权
    • Optical fiber magnetic field sensor with thermal and acoustic isolation
    • 具有隔声和隔音的光纤磁场传感器
    • US4378497A
    • 1983-03-29
    • US241289
    • 1981-03-06
    • Thomas G. Giallorenzi
    • Thomas G. Giallorenzi
    • G01D5/353G01R33/032G02B5/14
    • G01D5/35303G01R33/0327
    • 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.
    • 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。
    • 10. 发明授权
    • Planar fiber optic star and access coupler
    • 平面光纤星形和接入耦合器
    • US4213670A
    • 1980-07-22
    • US841859
    • 1977-10-06
    • A. Fenner MiltonThomas G. Giallorenzi
    • A. Fenner MiltonThomas G. Giallorenzi
    • G02B6/28G02B5/14
    • G02B6/2808
    • 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.
    • 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。