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41. 发明授权

US5852702A Thin film optical waveguide and optical deflecting device 失效
标题翻译：薄膜光波导和光学偏转装置
公开(公告)号：US5852702A
公开(公告)日：1998-12-22
申请号：US804689
申请日：1997-02-25
申请人： Naoki Nishida , Tsuyoshi Iwamoto , Shunichi Hayamizu
发明人： Naoki Nishida , Tsuyoshi Iwamoto , Shunichi Hayamizu
IPC分类号： B41J2/465 , G02F1/335 , G02B6/10
CPC分类号： G02F1/335 , B41J2/465
摘要： A thin film waveguide and an optical deflecting device which have a substrate and a waveguide layer. An optical buffer layer which has a refractive index smaller than that of the waveguide layer is provided between the substrate and the waveguide layer, and the optical buffer layer has such a thickness as to make a zero mode guided light beam progressing in the waveguide layer have a propagation loss not more than 2 dB/cm and as to make a first mode guided light beam progressing in the waveguide layer have a propagation loss not less than 4 dB/cm. For example, the waveguide layer is a ZnO thin film, the substrate is a silicon substrate, and the optical buffer layer is a SiO.sub.2 thin film. Further, an interdigital transducer is provided on the waveguide layer to excite Sezawa waves as surface acoustic waves. For example, the waveguide layer is designed to have a thickness which meets the following condition: 1.0
摘要翻译：具有基板和波导层的薄膜波导和光学偏转装置。在衬底和波导层之间设置折射率小于波导层的光学缓冲层，并且光缓冲层具有使在波导层中前进的零模式引导光束具有的厚度传播损耗不大于2dB / cm，并且使得在波导层中前进的第一模式引导光束具有不小于4dB / cm的传播损耗。例如，波导层是ZnO薄膜，衬底是硅衬底，光学缓冲层是SiO 2薄膜。此外，在波导层上提供叉指式换能器，以激发Sezawa波作为表面声波。例如，波导层被设计成具有满足以下条件的厚度：1.0

42. 发明授权

US5835643A Waveguide input/output device 失效
标题翻译：波导输入/输出设备
公开(公告)号：US5835643A
公开(公告)日：1998-11-10
申请号：US714362
申请日：1996-09-16
申请人： Shinji Fukumoto , Naoki Nishida
发明人： Shinji Fukumoto , Naoki Nishida
IPC分类号： G02F1/33 , G02B6/34 , G02F1/335
CPC分类号： G02F1/335 , G02B6/34 , G02F2201/302
摘要： A waveguide input/output device for input and output of laser light L into a thin-film waveguide 2 via an input grating or prism 7 and an output or emission grating 8. The height of the emission grating 8 is gradually increased in a travel direction of a light advancing through the waveguide and either the height of the input grating 7 or the height of the output grating 8 is gradually increased in the direction of propagation of the service elastic waves in the waveguide 3 generated by a transducer element 3.
摘要翻译：用于经由输入光栅或棱镜7以及输出或发射光栅8将激光L输入和输出到薄膜波导2中的波导输入/输出装置。发射光栅8的高度在行进方向上逐渐增加通过波导推进的光，并且输入光栅7的高度或输出光栅8的高度在由换能器元件3产生的波导管3中的使用弹性波的传播方向上逐渐增加。

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