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公开(公告)号：US5526448A
公开(公告)日：1996-06-11
申请号：US315981
申请日：1994-09-30
申请人： Hirotoshi Nagata , Junichiro Minowa , Manabu Yamada , Junichiro Ichikawa , Jamshid Nayyer , Shinichi Shimotsu , Junichi Ogiwara , Masanobu Kobayashi , Hideki Honda , Kazumasa Kiuchi , Takashi Shinriki , Toshihiro Sakamoto
发明人： Hirotoshi Nagata , Junichiro Minowa , Manabu Yamada , Junichiro Ichikawa , Jamshid Nayyer , Shinichi Shimotsu , Junichi Ogiwara , Masanobu Kobayashi , Hideki Honda , Kazumasa Kiuchi , Takashi Shinriki , Toshihiro Sakamoto
CPC分类号： G02F1/035 , G02F1/2255 , G02F2203/20 , G02F2203/21
摘要： An optical waveguide device usable as an optical wave-modulator and having a reduced DC drift includes a LiNbO.sub.3 substrate, an optical waveguide formed in a front surface portion of the substrate, a dielectric layer covering the front surface of the substrate and the optical waveguide surface, and an electrode system arranged on the dielectric layer, the dielectric layer comprising a matrix component consisting of an amorphous SiO.sub.2 and a doping element component consisting of Li and/or Nb; and having a refractive index lower than that of the amorphous SiO.sub.2 matrix free from the doping element component.
摘要翻译： 可用作光波调制器并具有降低的DC漂移的光波导器件包括LiNbO 3衬底，形成在衬底的前表面部分中的光波导，覆盖衬底的前表面的电介质层和光波导表面 以及布置在所述电介质层上的电极系统，所述电介质层包括由非晶SiO 2和由Li和/或Nb组成的掺杂元素组分构成的基体组分; 并且其折射率低于不含掺杂元素组分的非晶SiO 2基体的折射率。
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公开(公告)号：US6134372A
公开(公告)日：2000-10-17
申请号：US319068
申请日：1999-06-01
申请人： Junichiro Ichikawa , Hirotoshi Nagata , Kaoru Higuma , Junichiro Minowa , Takaaki Ogata , Yasuhisa Taneda
发明人： Junichiro Ichikawa , Hirotoshi Nagata , Kaoru Higuma , Junichiro Minowa , Takaaki Ogata , Yasuhisa Taneda
CPC分类号： G02F1/3511 , G02F1/365 , G02F1/0147 , G02F1/377 , G02F2001/374
摘要： A light intensity attenuator and attenuating method is provided, by which a pulse-shaped optical surge can be attenuated and an optical signal component using desired light intensity can be output by using a simpler structural arrangement, and without using many optical components and circuits. In this method, an optical signal including a pulse-shaped optical surge component is received, and the optical signal is again output after the light intensity of the surge component is attenuated by a desired amount. Typically, (i) at least one of a substrate and an optical waveguide formed on the substrate is made of a material producing a nonlinear optical effect, and the refractive index of the optical waveguide with respect to the optical signal is smaller than the refractive index of the substrate with respect to a higher harmonic of the optical signal, thereby wavelength-converting a part of the input optical signal by the nonlinear optical effect into a light portion having a wavelength shorter than that of the optical signal, and scattering this converted portion, and (ii) a part of the optical signal is scattered by using a polar-molecule liquid including polar molecules.
摘要翻译： PCT No.PCT / JP98 / 04346 Sec。 371日期1999年6月1日 102（e）1999年6月1日PCT PCT 1998年9月20日PCT公布。 公开号WO99 / 17472 日期1999年4月8日提供了一种光强度衰减器和衰减方法，通过该光强度衰减器和衰减方法可以衰减脉冲形波浪，并且可以通过使用更简单的结构布置输出使用期望光强的光信号分量，并且不使用许多光 组件和电路。 在该方法中，接收包括脉冲状波浪分量的光信号，并且在浪涌元件的光强度衰减期望量之后再次输出光信号。 通常，（i）形成在基板上的基板和光波导中的至少一个由产生非线性光学效应的材料制成，光波导相对于光信号的折射率小于折射率 相对于光信号的高次谐波而使输入光信号的一部分通过非线性光学效应波长转换为波长短于光信号的波长的光部分，并将该转换部分散射 ，和（ii）通过使用包含极性分子的极性分子液体来散射光信号的一部分。
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公开(公告)号：US06956980B2
公开(公告)日：2005-10-18
申请号：US10380585
申请日：2001-09-18
CPC分类号： G02F1/2255 , G02F1/0356 , G02F2201/07 , G02F2202/42 , G02F2203/21
摘要： There is provided a high performance optical waveguide type optical modulator with excellent long term reliability, in which contamination of the buffer layer in a forming process of a signal field adjustment region on the buffer layer by a lift-off method or an etching method, is prevented and DC drift thus suppressed. The optical waveguide type optical modulator 10 comprises a substrate 11 having an electro-optic effect, optical waveguides 12 formed on the surface of this substrate 11, a traveling-wave type signal electrode 13a and ground electrodes 13b which are provided on the substrate 11 and control a lightwave, and a buffer layer 14 provided between the electrodes 13 and the optical waveguides 12, and furthermore, a dielectric layer 15 is provided on the entire surface of the buffer layer 14 on the side of the electrodes 13, and a signal field adjustment region 16 which has a wider width than that of the traveling-wave type signal electrode 13a and is made of a material with a higher refractive index than that of the dielectric layer 15 is formed between the dielectric layer 15 and the traveling-wave type signal electrode 13a.
摘要翻译： 提供了一种具有优异的长期可靠性的高性能光波导型光学调制器，其中通过剥离方法或蚀刻方法在缓冲层上的信号场调整区域的形成处理中的缓冲层的污染是 防止并且DC漂移被抑制。 光波导型光调制器10包括具有电光效应的基板11，形成在该基板11的表面上的光波导12，设置在基板11上的行波型信号电极13a和接地电极13b 11并控制光波，以及设置在电极13和光波导12之间的缓冲层14，此外，在缓冲层14的电极13一侧的整个表面上设置有电介质层15， 具有比行波型信号电极13a宽的宽度的信号场调整区域16由具有比电介质层15的折射率更高的折射率的材料形成在电介质层15和行进 波型信号电极13a。
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公开(公告)号：US06218658B1
公开(公告)日：2001-04-17
申请号：US09271302
申请日：1999-03-17
IPC分类号： H01J4014
CPC分类号： G02F1/3525 , G02B6/264 , G02B6/3845 , G02F1/35
摘要： The optical fuse of the present invention comprises: at least one light heatable portion for receiving an incident beam, and at least one thermally sensitive degradable portion with transparency and reflectivity, positioned in contact with the light heatable portion. The light heatable portion contains a light heatable material which generates heat depending on a specified light intensity of the incident beam. The thermally sensitive degradable portion contains a thermally sensitive degradable material which loses or reduces its transparency and reflectivity, depending on the heat generated by the light heatable portion when the light intensity of the incident beam exceeds a threshold value.
摘要翻译： 本发明的光熔丝包括：用于接收入射光束的至少一个光可加热部分和具有透明度和反射率的至少一个具有透光性和反射性的热敏可降解部分，与光可加热部分接触。 光可加热部分包含根据入射光束的规定光强度产生热量的轻质可加热材料。 热敏可降解部分包含热敏可降解材料，其当入射光束的光强度超过阈值时，根据由可热加热部分产生的热量而损失或降低其透明度和反射率。
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公开(公告)号：US06233385B1
公开(公告)日：2001-05-15
申请号：US09239401
申请日：1999-01-28
IPC分类号： G02B600
CPC分类号： G02F1/395
摘要： The object of the present invention is to provide a light limiter which can control the generation of an optical surge, comprises few components, and has high reliability; in order to achieve the object, the light limiter of the present invention comprise a parametric amplification element parametrically amplifying an input signal light, and a wavelength selection element removing a wavelength component, excepting a specified wavelength, from among the signal light output from said parametric amplification element.
摘要翻译： 本发明的目的是提供一种可以控制光波浪的产生的光限制器，包括很少的部件，并且具有高的可靠性; 为了实现该目的，本发明的光限制器包括参数放大元件，其参数地放大输入信号光，以及波长选择元件，除去从所述参数的输出信号中除了特定波长之外的波长分量 放大元件。
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公开(公告)号：US06539153B2
公开(公告)日：2003-03-25
申请号：US09817824
申请日：2001-03-26
IPC分类号： G02B600
CPC分类号： G02F1/395
摘要： The object of the present invention is to provide a light limiter which can control the generation of an optical surge, comprises few components, and has high reliability; in order to achieve the object, the light limiter of the present invention comprise a parametric amplification element parametrically amplifying an input signal light, and a wavelength selection element removing a wavelength component, excepting a specified wavelength, from among the signal light output from said parametric amplification element.
摘要翻译： 本发明的目的是提供一种可以控制光波浪的产生的光限制器，包括很少的部件，并且具有高的可靠性; 为了实现该目的，本发明的光限制器包括参数放大元件，其参数地放大输入信号光，以及波长选择元件，除去从所述参数的输出信号中除了特定波长之外的波长分量 放大元件。
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公开(公告)号：US06980705B2
公开(公告)日：2005-12-27
申请号：US10451435
申请日：2001-11-28
CPC分类号： G02F1/0322 , G02F1/035 , G02F1/0356 , G02F2201/07 , G02F2201/16 , G02F2203/21 , G02F2203/50
摘要： A first film (8) is formed between a substrate (1) and a signal electrode (3); ground electrodes (5) and (6) which constitute an optical waveguide device (10), and a second film (9) is formed between the substrate (1) and a signal electrode (4); ground electrodes (6) and (7). An optical phase modulator (10A) is composed of the substrate (1), an optical waveguide (2), the signal electrode (3), the ground electrodes (5) and (6), and the first film (8). An optical intensity modulator (10B) is composed of the substrate (1), the optical waveguide (2), the signal electrode (4), the ground electrodes (6) and (7), and the second film (9). The optical waveguide device (10) is composed of the optical phase modulator (10A) and the optical intensity modulator (10B), which are integrated monolithically.
摘要翻译： 第一膜（8）形成在基板（1）和信号电极（3）之间; 构成光波导装置（10）的接地电极（5）和（6），在基板（1）和信号电极（4）之间形成第二膜（9）。 接地电极（6）和（7）。 光学相位调制器（10A）由基片（1），光波导（2），信号电极（3），接地电极（5）和（6）和第一薄膜（8）构成。 光强度调制器（10 B）由基板（1），光波导（2），信号电极（4），接地电极（6）和（7）和第二膜（9）构成。 光波导装置（10）由光学相位调制器（10A）和光强度调制器（10B）组成，其被整体地集成。
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公开(公告)号：US06806113B2
公开(公告)日：2004-10-19
申请号：US09959156
申请日：2002-05-06
IPC分类号： G02B627
CPC分类号： G02F1/035 , G02F1/225 , G02F2001/212 , G02F2201/07 , G02F2203/07
摘要： An optical waveguide is formed on a substrate made of a material with an electro-optic effect. Then, an intermediate layer is fabricated, on the main surface of the substrate, by a dielectric material selected from the group consisting of AOx, B2Oy, COz (A: divalent element, B: trivalent element, C: quadrivalent element, 0
摘要翻译： 在由具有电光效应的材料制成的基板上形成光波导。 然后，通过选自AOx，B2Oy，COz（A：二价元素，B：三价元素，C：四价元素，0
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9.发明授权Controllable electro-optic device having substrate trenches between electrodes 有权在电极之间具有衬底沟槽的可控电光器件公开(公告)号：US07171063B2
公开(公告)日：2007-01-30
申请号：US11001440
申请日：2004-12-01
申请人： Gilbert D. Feke , Hirotoshi Nagata , Karl Kissa
发明人： Gilbert D. Feke , Hirotoshi Nagata , Karl Kissa
摘要： An optical modulator which has substantially low loss and has an improvement in voltage reduction is disclosed having an electro-optic lithium niobate substrate. The substrate has first, second and third ridges extending along its surface. Extending along the first and second ridges are first and second waveguides. A first RF electrode extends over the first waveguide and a second slotted electrode including a first section extends over the second waveguide. A second section of the slotted extends parallel to and adjacent to the first section on the third ridge. In summary, this invention provides a slotted ground electrode wherein a slot is formed in the substrate between the slotted electrode.
摘要翻译： 公开了一种具有实质上低损耗并且具有降低电压的改进的光调制器，其具有电光铌酸锂衬底。 衬底具有沿其表面延伸的第一，第二和第三脊。 沿着第一和第二脊延伸的是第一和第二波导。 第一RF电极在第一波导上延伸，并且包括第一部分的第二开槽电极在第二波导上延伸。 开槽的第二部分平行于并邻近第三脊上的第一部分延伸。 总之，本发明提供了一种开槽接地电极，其中在开槽电极之间的衬底中形成槽。
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10.发明授权Electro-optic waveguide device capable of suppressing bias point DC drift and thermal bias point shift 有权能够抑制偏置点DC漂移和热偏置点偏移的电光波导装置公开(公告)号：US07231101B2
公开(公告)日：2007-06-12
申请号：US11131634
申请日：2005-05-18
申请人： Hirotoshi Nagata
发明人： Hirotoshi Nagata
CPC分类号： G02F1/225 , G02F2201/07 , G02F2203/21
摘要： The present invention discloses an electro-optic waveguide device such as a modulator. The device has an electro-optic substrate having optical waveguides within the substrate at or near an upper surface. A buffer layer is formed on the top surface of the electro-optic substrate. A novel block layer is formed on the buffer layer surface, which can suppress or lessen an unwanted occurrence of chemical reactions at or near the surface of the buffer layer. A charge bleed off layer is formed on the block layer, which has a certain amount of electrical conductivity to bleed off any electrical charges generated on or in the electro-optic waveguide device. Electrodes are on the charge bleed off layer, which can provide electrical signals to the optical waveguides through the buffer layer, the block layer, and the charge bleed off layer.
摘要翻译： 本发明公开了一种诸如调制器的电光波导器件。 该器件具有在上表面处或附近的衬底内具有光波导的电光衬底。 在电光基板的顶表面上形成缓冲层。 在缓冲层表面上形成新的阻挡层，可以抑制或减少缓冲层表面处或附近不希望有的化学反应的发生。 在阻挡层上形成电荷泄漏层，该阻挡层具有一定量的电导率以渗出在电光波导器件上或其中产生的任何电荷。 电极位于电荷泄漏层上，其可以通过缓冲层，阻挡层和电荷泄漏层向光波导提供电信号。
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