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公开(公告)号：EP1039335A2
公开(公告)日：2000-09-27
申请号：EP00302233.2
申请日：2000-03-20
申请人： NGK INSULATORS, LTD.
IPC分类号： G02F1/313
CPC分类号： G02F1/3132 , G02F1/0316 , G02F1/3134 , G02F1/3558 , G02F2202/07
摘要： An optical directional coupler for use in ultra fast switching has a substrate (2) of a material that exhibits electrooptic properties, divided into a plurality of reversed polarization domains (5-1, 5-2) along a length direction. At least two optical waveguides (3-1, 3-2) are formed in the substrate extending in the length direction and substantially parallel to a main surface. An electrode (4-1, 4-2) is disposed above a portion of each optical waveguide for modulating light waves propagating through the waveguides, the electrodes being divided equally by the extension of a boundary surface (7) between the plurality of reversed polarization domains. A low drive potential is achieved, and avoidance of temperature drift.
摘要翻译： 用于超快速切换的光学定向耦合器具有沿着长度方向分成多个反向极化畴（5-1,5-2）的具有电光特性的材料的衬底（2）。 至少两个光波导（3-1,3-2）形成在基板中，该基板在长度方向上延伸并基本平行于主表面。 电极（4-1,4-2）设置在每个光波导的一部分的上方，用于调制通过波导传播的光波，电极通过在多个反向极化之间的边界面（7）的延伸而被均等地分配 域。 实现低驱动电位，避免温度漂移。
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公开(公告)号：EP0905543A3
公开(公告)日：2000-07-05
申请号：EP98307847.8
申请日：1998-09-28
申请人： NGK INSULATORS, LTD.
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F2201/127
摘要： A light modulator for modulating light upon application of a signal voltage has a substrate (2), an optical waveguide (7) formed on a side of a front surface side of the substrate, and first and secondary electrodes (8;5A,5B) for applying the signal voltage to the light propagating through the optical waveguide. The first electrode is formed on a front surface side of the optical waveguide (7) and includes a main portion (8c) covering the front surface side of the optical waveguide and an overhanging portion or portions (8a,8b) projecting to the side from the main portion.
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3.发明公开Optical waveguide devices, travelling-wave light modulators, and process for producing optical waveguide device 失效的光波导器件，光行波调制器及其制造光波导器件的方法
公开(公告)号：EP0828175A2
公开(公告)日：1998-03-11
申请号：EP97306872.9
申请日：1997-09-04
申请人： NGK INSULATORS, LTD.
IPC分类号： G02F1/05
CPC分类号： G02F1/035 , G02F1/0316
摘要： An optical waveguide device includes a substrate (1) having a pair of opposed main planes, an optical waveguide (2) formed on one of the opposed main planes, and an electrode portion (3,4), wherein a thickness of a portion of the substrate at at least a location where the electrode portion is formed is made smaller than at a remainder thereof.
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公开(公告)号：EP1039335A3
公开(公告)日：2003-08-06
申请号：EP00302233.2
申请日：2000-03-20
申请人： NGK INSULATORS, LTD.
CPC分类号： G02F1/3132 , G02F1/0316 , G02F1/3134 , G02F1/3558 , G02F2202/07
摘要： An optical directional coupler for use in ultra fast switching has a substrate (2) of a material that exhibits electrooptic properties, divided into a plurality of reversed polarization domains (5-1, 5-2) along a length direction. At least two optical waveguides (3-1, 3-2) are formed in the substrate extending in the length direction and substantially parallel to a main surface. An electrode (4-1, 4-2) is disposed above a portion of each optical waveguide for modulating light waves propagating through the waveguides, the electrodes being divided equally by the extension of a boundary surface (7) between the plurality of reversed polarization domains. A low drive potential is achieved, and avoidance of temperature drift.
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公开(公告)号：EP0905543A2
公开(公告)日：1999-03-31
申请号：EP98307847.8
申请日：1998-09-28
申请人： NGK INSULATORS, LTD.
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F2201/127
摘要： A light modulator for modulating light upon application of a signal voltage has a substrate (2), an optical waveguide (7) formed on a side of a front surface side of the substrate, and first and secondary electrodes (8;5A,5B) for applying the signal voltage to the light propagating through the optical waveguide. The first electrode is formed on a front surface side of the optical waveguide (7) and includes a main portion (8c) covering the front surface side of the optical waveguide and an overhanging portion or portions (8a,8b) projecting to the side from the main portion.
摘要翻译： 用于在施加信号电压时调制光的光调制器具有基板（2），形成在基板的正面侧的光波导（7）和第一和第二电极（8; 5A，5B） 用于将信号电压施加到通过光波导传播的光。 第一电极形成在光波导（7）的前表面侧，并且包括覆盖光波导的前表面侧的主要部分（8c）和从侧向突出的突出部分（8a，8b） 主要部分。
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6.发明公开Optical waveguide device, process of producing the same and second harmonic generation device 失效Optische Wellenleiteranordnung，deren Herstellungsverfahren und Vorrichtung zur Frequenzverdopplung
公开(公告)号：EP0828168A2
公开(公告)日：1998-03-11
申请号：EP97306828.1
申请日：1997-09-03
申请人： NGK INSULATORS, LTD.
CPC分类号： G02F1/035 , G02B6/122 , G02B2006/12097 , G02F1/3775
摘要： An optical waveguide substrate has a substrate (14) made of ferroelectric optical single crystal and a ridge portion (24A) projecting from a main plane of the substrate. The ridge portion has a base portion (15) made of ferroelectric optical single crystal and an optical waveguide (16) formed on the base portion. The optical waveguide substrate is made by forming at least one optical waveguide layer on a main plane of a substrate made of ferroelectric optical single crystal, and mechanically working main planes of the optical waveguide layer and the substrate to form a ridge portion projected from the main plane of the substrate. The optical waveguide substrate can reduce light transmission loss, increase extinction ratio, and improve electric field applying efficiency.
摘要翻译： 光波导基板具有由铁电光学单晶构成的基板（14）和从基板的主面突出的凸部（24A）。 脊部具有由铁电光学单晶构成的基部（15）和形成在基部上的光波导（16）。 光波导基板是通过在由铁电光学单晶构成的基板的主平面上形成至少一个光波导层，以及在光波导层和基板的机械加工主平面上形成从主体突出的脊部 基板平面。 光波导基板可以降低光传输损耗，提高消光比，提高电场施加效率。
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7.发明授权Optical waveguide device, process of producing the same and second harmonic generation device 失效的光波导集合体，它们的制备方法和设备，用于倍频
公开(公告)号：EP0828168B1
公开(公告)日：2007-01-10
申请号：EP97306828.1
申请日：1997-09-03
申请人： NGK INSULATORS, LTD.
CPC分类号： G02F1/035 , G02B6/122 , G02B2006/12097 , G02F1/3775
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公开(公告)号：EP1193536B1
公开(公告)日：2004-11-24
申请号：EP01308018.9
申请日：2001-09-20
申请人： NGK INSULATORS, LTD.
发明人： Minakata, Makoto , Kondo, Jungo , Kondo, Atsuo , Aoki, Kenji , Mitomi, Osamu
CPC分类号： G02F1/0356 , G02F1/0305
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公开(公告)号：EP1193536A3
公开(公告)日：2003-02-05
申请号：EP01308018.9
申请日：2001-09-20
申请人： NGK INSULATORS, LTD.
发明人： Minakata, Makoto , Kondo, Jungo , Kondo, Atsuo , Aoki, Kenji , Mitomi, Osamu
CPC分类号： G02F1/0356 , G02F1/0305
摘要： A travelling wave-type optical modulator (1) has a substrate (3) made of an electro-optic material, optical waveguides (6A,6B) fabricated on the top surface of the substrate, and electrodes (2A,2B,2C) for modulating an optical wave through the optical waveguide. The substrate is partially thinned from the bottom surface of the substrate to form a first thinned portion (3f) and a second thinned portion (3e) so that the thickness of the first thinned portion is set to be larger than the thickness of the second thinned portion, and the optical waveguide is positioned in the first thinned portion.
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公开(公告)号：EP0985948A1
公开(公告)日：2000-03-15
申请号：EP99307195.0
申请日：1999-09-10
申请人： NGK INSULATORS, LTD.
发明人： Minakata, Makoto , Kondo, Jungo , Hirai, Takami , Imaeda, Minoru
CPC分类号： G02F1/035
摘要： An optical waveguide element includes a substrate (1) showing electrooptical effects and having a pair of opposite major planes (1A, 1B), an optical waveguide (2) formed on one major plane of the substrate, and an electrode (3) for applying a modulation signal to an optical wave transmitted through said optical waveguide. A portion (5) having a relatively small thickness is formed at a region of the substrate at least positioned correspondingly to the electrode (3), and a buffer layer (6) is formed between the substrate and the electrode. Impedance conformity with the modulation signal applied to the electrode is performed by controlling the thickness of the thin portion (5).
摘要翻译： 光波导元件包括显示电光效应并具有一对相对的主平面（1A，1B）的基板（1），形成在基板的一个主平面上的光波导（2）和用于施加的电极 对通过所述光波导传输的光波的调制信号。 在基板的至少对应于电极（3）的位置处形成具有相对较小厚度的部分（5），并且在基板和电极之间形成缓冲层（6）。 通过控制薄部分（5）的厚度来执行与施加到电极的调制信号的阻抗一致性。
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