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Photocoupling device

阅读:448发布:2021-11-15

专利汇可以提供Photocoupling device专利检索,专利查询,专利分析的服务。并且PURPOSE:To arbitrary adjust the phase constant between optical guides by providing a photsensitive thin film on one optical guide in the photocoupling part of the photocoupling device or in proximity thereto and forming the grating image which periodically changes the refractive index of light. CONSTITUTION:A photosensitive film 4 is provided on one optical guide 3 in the coupling place L or in extreme proximity thereto as shown in the figure. The control light from the outside is radiated to this photsensitive thin film 4 to expose the grating image corresponding to the control light to this. Arrangement is so made that the refractive index of light at this portion is periodically changed. These enable the arbitrary adjustment of the phase matching conditions between the optical guides 2 and 3 and the enhancement of the photocoupling efficiency.,下面是Photocoupling device专利的具体信息内容。

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