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公开(公告)号：US5652808A
公开(公告)日：1997-07-29
申请号：US575086
申请日：1995-12-19
CPC分类号： G02F1/125 , G02F2203/055
摘要： An acoustic-optical device for optical filtering includes two successive acoustic-optical interaction segments separated by an intermediate polarizer and each modifying the polarization of light guided by it. The modification depends on the frequencies of the interacting optical and acoustic waves. The acoustic waves are supplied symmetrically to the two interaction segments from a common electro-optical transducer. The transmission spectrum of the optical filter is subject to apodization by coupling between an auxiliary acoustic waveguide including the transducer and a main acoustic waveguide including the optical waveguide. Applications of the device include fiber optic telecommunication systems.
摘要翻译： 用于光学滤波的声光装置包括由中间偏振器分离的两个连续的声光相互作用段，并且每个修改由其引导的光的偏振。 修改取决于相互作用的光和声波的频率。 声波从公共电光换能器对称地提供给两个相互作用段。 滤光器的透射光谱通过包括换能器的辅助声波导和包括光波导的主声波导之间的耦合进行变迹。 该设备的应用包括光纤通信系统。
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2.发明授权
公开(公告)号：US5625735A
公开(公告)日：1997-04-29
申请号：US542726
申请日：1995-10-13
CPC分类号： G02B6/3812 , G02B6/4216 , G02B6/30 , G02B6/3861
摘要： In a method for fixing a polarization-preserving optical fiber the fiber is illuminated transversely and orientation of the polarization-preserving plane of the fiber is monitored by direct visual examination of internal components of the fiber rendered visible by such illumination. The illumination is effected through the wall of a transparent ferrule holding the fiber. The method has applications in fiber optical telecommunications systems.
摘要翻译： 在固定偏振保留光纤的方法中，光纤被横向照射，并且通过对通过这种照明可见的光纤的内部部件的直接目视检查来监视光纤的偏振保留平面的取向。 照明通过保持光纤的透明套圈的壁进行。 该方法在光纤通信系统中具有应用。
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