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1. 发明申请

US20130329145A1 OPTICAL WAVELENGTH FILTER 有权
标题翻译：光波长滤波器
公开(公告)号：US20130329145A1
公开(公告)日：2013-12-12
申请号：US13491029
申请日：2012-06-07
申请人： Seong Woo SUH
发明人： Seong Woo SUH
IPC分类号： G02F1/13 , G02B5/30
CPC分类号： G02B5/30 , G02B6/12019 , G02F1/13
摘要： An optical wavelength selective device includes a waveguide grating unit to separate input beam signals with different wavelengths into a plurality of output beam signals, each of which has a different wavelength span and is output from a different channel region of the waveguide grating unit; a polarization splitting unit to split each of the output beam signals into a first polarized beam with a first polarization and a second polarized beam with a second polarization different from the first polarization; a birefringence control member to control the first polarized beam to undergo a different refractive effect than the second polarized beam when the first and second polarized beams pass through the birefringence control member under a first voltage applied thereto; and a reflection member configured to reflect the first and second polarized beams output from the birefringence control member back to the birefringence control member.
摘要翻译：光波长选择装置包括波导光栅单元，用于将具有不同波长的输入波束信号分离成多个输出波束信号，每个输出波束信号具有不同的波长跨度，并从波导光栅单元的不同通道区域输出; 偏振分束单元，用于将每个输出光束信号分离为具有第一偏振的第一偏振光束和具有不同于第一偏振的第二偏振的第二偏振光束; 当第一和第二偏振光束以施加于其上的第一电压通过双折射控制部件时，控制第一偏振光束经受与第二偏振光束不同的折射效应的双折射控制部件; 以及反射构件，被配置为将从双折射控制构件输出的第一和第二偏振光束反射回双折射控制构件。

2. 发明申请

US20120081625A1 VARIABLE OPTICAL ATTENUATOR (VOA) 有权
标题翻译：可变光学衰减器（VOA）
公开(公告)号：US20120081625A1
公开(公告)日：2012-04-05
申请号：US13250180
申请日：2011-09-30
申请人： Seong Woo SUH
发明人： Seong Woo SUH
IPC分类号： G02F1/133 , G02B6/00
CPC分类号： G02B6/266 , G02B6/3594 , G02F1/1326 , G02F2203/48
摘要： A variable optical attenuator includes a collimating unit that collimates an incident light beam, a polarization splitting member that separates the collimated light beam into a first polarized light beam having a first polarization and a second polarized light beam having a second polarization, a birefringence control unit through which the first and second polarized light beams pass, the birefringence control unit including a liquid crystal cell having a birefringence is controlled by a voltage or current, wherein the birefringence of the liquid crystal cell is substantially zero when no voltage or current is applied thereto, and a reflection member that reflects the first and second polarized light beams output from the birefringence control unit. The variable optical attenuator has high stability, high precision, and low volume.
摘要翻译：可变光衰减器包括准直入射光束的准直单元，将准直光束分离为具有第一偏振的第一偏振光束和具有第二偏振的第二偏振光束的偏振分束构件，双折射控制单元通过第一和第二偏振光束通过的双折射控制单元，包括具有双折射性的液晶单元的双折射控制单元由电压或电流控制，其中当不施加电压或电流时液晶单元的双折射基本上为零以及反射从双折射控制单元输出的第一和第二偏振光的反射构件。可变光衰减器稳定性高，精度高，体积小。

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