公开(公告)号：US06556727B2

公开(公告)日：2003-04-29

申请号：US09954368

申请日：2001-09-17

申请人： Makoto Minakata ,  Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

发明人： Makoto Minakata ,  Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC分类号： G02F1035

CPC分类号： G02F1/2255 ,  G02F1/0305

摘要： A travelling wave-type optical modulator has a substrate made of an electro-optic material, optical waveguides fabricated on the top surface of the substrate, and electrodes 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 and a second thinned portion 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.

公开(公告)号：US07389030B2

公开(公告)日：2008-06-17

申请号：US11671112

申请日：2007-02-05

申请人： Osamu Mitomi ,  Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Tetsuya Ejiri ,  Yuichi Iwata

发明人： Osamu Mitomi ,  Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Tetsuya Ejiri ,  Yuichi Iwata

IPC分类号： G02B6/10

CPC分类号： G02F1/035 ,  G02F1/0508

摘要： An optical functional device comprises a dielectric substrate 5, a ferroelectric thin layer 10 provided on the dielectric substrate 5 and comprising a material having electro-optical effect and an electrode 3A, 3B provided on the ferroelectric thin layer 10. A part of the ferroelectric thin layer 10 functions as a core 9 of the optical wave guide and the dielectric substrate functions as a clad for the optical waveguide. The optical waveguide 9 constitutes a multi-mode waveguide in the direction “D” of depth of the ferroelectric thin layer.

摘要翻译： 光功能元件包括电介质基片5，设置在电介质基片5上并包含具有电光效应的材料和设置在铁电薄层10上的电极3A，3B的铁电薄层10。 铁电薄层10的一部分用作光波导的芯9，并且电介质基板用作光波导的包层。 光波导9构成铁电薄层的深度方向“D”的多模波导。

公开(公告)号：US07319800B2

公开(公告)日：2008-01-15

申请号：US11560144

申请日：2006-11-15

申请人： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

发明人： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

IPC分类号： G02F1/035

CPC分类号： G02F1/2255 ,  G02F1/0356 ,  G02F2203/25

摘要： A voltage is applied on a first branch 3a by a first ground electrode 10 and a signal electrode 11, and a voltage is applied on a second branch 3b by a second ground electrode 12A and the signal electrode 11. A first gap 13 is formed between the first ground electrode 10 and the signal electrode 11, and a second gap 14 is formed between the second ground electrode 12A and the signal electrode 11. The first gap 13 and the second gap 14 are divided into voltage applying portions 13a, 14a, feed-through portions and connection portions 13b, 14b therebetween, respectively, and satisfy the formula: G12/G11≦G22/G21

摘要翻译： 第一接地电极10和信号电极11对第一分支3a施加电压，并且通过第二接地电极12A和信号电极11将电压施加在第二分支3b上。第一间隙13 形成在第一接地电极10和信号电极11之间，并且在第二接地电极12A和信号电极11之间形成第二间隙14.第一间隙13和第二间隙14被分成电压施加部分13 a，14a，馈通部分和连接部分13b，14b，分别满足下列公式：G 12 / G 11 <= G _{21 表示连接部分侧的端部13c处的第一间隙13的宽度，G 22表示在第二间隙14的端部14c处的第二间隙14的宽度 连接部分侧面14c，G31表示电压施加部分13a处的第一间隙13的宽度，G 32表示第二间隙14的宽度 电压施加部分14a。}

公开(公告)号：US06958852B2

公开(公告)日：2005-10-25

申请号：US10743053

申请日：2003-12-23

申请人： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

发明人： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

IPC分类号： G02F1/035 ,  G02F1/225 ,  G02B6/10 ,  G02F1/29

CPC分类号： G02F1/2255 ,  G02F1/0356

摘要： A Mach-Zehnder optical waveguide is disposed in a substrate made of a material having an electro-optic effect. Coplanar-waveguide modulating electrodes are disposed on a principal surface of the substrate. A dielectric layer is disposed on a reverse surface of the substrate. A supporting substrate having a recess is disposed in contact with the dielectric layer such that the recess is located at a position corresponding to a modulating region. The relationship: ∈r>∈s is satisfied where ∈r represents the dielectric constant of the supporting substrate and ∈s represents the dielectric constant of the dielectric constant of solid, liquid, or gaseous substance in the recess.

摘要翻译： 马赫曾德尔光波导设置在由具有电光效应的材料制成的基板中。 共面波导调制电极设置在基板的主表面上。 电介质层设置在基板的反面上。 具有凹部的支撑基板设置成与电介质层接触，使得凹部位于对应于调制区域的位置。 满足关系：∈∈r∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈∈ SUB>表示凹部中固体，液体或气态物质的介电常数。

公开(公告)号：US06950580B2

公开(公告)日：2005-09-27

申请号：US10628472

申请日：2003-07-29

申请人： Osamu Mitomi ,  Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo

发明人： Osamu Mitomi ,  Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo

IPC分类号： G02F1/035 ,  G02F1/03 ,  G02F1/225 ,  G02B6/12

CPC分类号： G02F1/2255 ,  G02F2202/42

摘要： An optical waveguide device 1A has a substrate 22 and a supporting body 10 for supporting the substrate. The substrate 22 has a main body 2 made of an electrooptic material and one and the other main faces, optical waveguides 3a, 3b and electrodes 4B, 4C provided on the side of the one main face 2a of the main body 2 The supporting body 10 is joined with the substrate 2 on the side of the other main face, and the electrode has a feedthrough portion. The device 1A further has a low dielectric portion 7 provided under the feed through portion and between the other main face 2b of the main body 2 and the supporting body 10.

摘要翻译： 光波导器件1A具有用于支撑衬底的衬底22和支撑体10。 基板22具有由电光材料构成的主体2和其他主面，设置在主体的一个主面2a一侧的光波导3a，3b和电极4B，4C， 2，支撑体10与基板2在另一主面侧连接，电极具有馈通部。 装置1A还具有设置在主体2的另一个主面2b和支撑体10之间的供给通路部下方的低介电部7。

公开(公告)号：US07502530B2

公开(公告)日：2009-03-10

申请号：US10568888

申请日：2004-08-19

申请人： Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

发明人： Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC分类号： G02F1/035

CPC分类号： G02F1/0356 ,  G02F1/2255 ,  G02F2203/21

摘要： A device 4 has a substrate 5, an optical waveguide 2 and modulation electrodes 1A, 1B, 1C. The substrate 5 is made of an electro-optic material and has a thickness of ≦30 μm at least in a region where the modulation electrode applies an electric field. The device has a ridge generated when the optical waveguide is formed, and the ridge has a height H (angstrom) and a width “W” (μm) whose product (H×W) is 7150 angstrom·μm or smaller to realize single mode propagation of light in the optical waveguide. The wave guide has branched parts in the region where the modulation electrode applied an electric field. The deviation of positions of peaks and bottoms in the extinction ratio curve can be reduced, by increasing the distance of the branched parts of the optical waveguide to ≧46 μm.

摘要翻译： 器件4具有基板5，光波导2和调制电极1A，1B，1C。 基板5由电光材料制成，至少在调制电极施加电场的区域中具有<=30μm的厚度。 该器件具有在形成光波导时产生的脊，脊的高度为H（埃），宽度“W”（母），其乘积（H×W）为7150埃或更小，以实现单模传播 在光波导中的光。 波导在调制电极施加电场的区域中具有分支部分。 通过将光波导的分支部分的距离增加到> =46μm，可以减少消光比曲线中的峰值和底部位置的偏差。

公开(公告)号：US20070081766A1

公开(公告)日：2007-04-12

申请号：US11560144

申请日：2006-11-15

申请人： Kenji AOKI ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

发明人： Kenji AOKI ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

IPC分类号： G02F1/035

CPC分类号： G02F1/2255 ,  G02F1/0356 ,  G02F2203/25

摘要： A voltage is applied on a first branch 3a by a first ground electrode 10 and a signal electrode 11, and a voltage is applied on a second branch 3b by a second ground electrode 12A and the signal electrode 11. A first gap 13 is formed between the first ground electrode 10 and the signal electrode 11, and a second gap 14 is formed between the second ground electrode 12A and the signal electrode 11. The first gap 13 and the second gap 14 are divided into voltage applying portions 13a, 14a, feed-through portions and connection portions 13b, 14b therebetween, respectively, and satisfy the formula: G12/G11≦G22/G21

摘要翻译： 第一接地电极10和信号电极11对第一分支3a施加电压，并且通过第二接地电极12A和信号电极11将电压施加在第二分支3b上。第一间隙13 形成在第一接地电极10和信号电极11之间，并且在第二接地电极12A和信号电极11之间形成第二间隙14.第一间隙13和第二间隙14被分成电压施加部分13 a，14a，馈通部分和连接部分13b，14b，分别满足下列公式：G 12 / G 11 <= G _{21 表示连接部分侧的端部13c处的第一间隙13的宽度，G 22表示在第二间隙14的端部14c处的第二间隙14的宽度 连接部分侧面14c，G31表示电压施加部分13a处的第一间隙13的宽度，G 32表示第二间隙14的宽度 电压施加部分14a。}

公开(公告)号：US07002731B2

公开(公告)日：2006-02-21

申请号：US10683267

申请日：2003-10-14

申请人： Osamu Mitomi ,  Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo

发明人： Osamu Mitomi ,  Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo

IPC分类号： G02F1/00 ,  G02F1/035

CPC分类号： G02F1/0356 ,  G02F1/0121

摘要： An object of the present invention is to improve the modulation efficiency of an optical modulator in a high frequency band while satisfying the velocity matching condition. An optical modulator is provided having an optical waveguide for propagating light, an electrode for applying a voltage on the waveguide for modulating the light, a signal source electrically connected to the electrode and a terminating resistance electrically connected to the electrode. The signal source has a characteristic impedance Zi and the terminating resistance has an impedance Zl satisfying the formula (Zi

摘要翻译： 本发明的一个目的是在满足速度匹配条件的同时提高高频带中光调制器的调制效率。 提供一种光调制器，其具有用于传播光的光波导，用于在波导上施加电压以调制光的电极，电连接到电极的信号源和电连接到电极的终端电阻。 信号源具有特性阻抗Zi，并且终端电阻具有满足公式（Zi

公开(公告)号：US06674565B2

公开(公告)日：2004-01-06

申请号：US09911862

申请日：2001-07-24

申请人： Atsuo Kondo ,  Jungo Kondo ,  Kenji Aoki ,  Osamu Mitomi

发明人： Atsuo Kondo ,  Jungo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC分类号： G02F100

CPC分类号： G02F1/2255 ,  G02F1/0356

摘要： A travelling wave-type optical modulator has a supporting substrate and a ferroelectric single crystalline layer on the supporting substrate. The ferroelectric single crystalline layer has thicker parts and thinner parts within the modulating region of the travelling wave-type optical modulator when viewed in the cross section of the modulating region. An optical waveguide is formed in the thicker part of the ferroelectric single crystalline layer, and electrodes for modulation are provided on the thinner part of the ferroelectric single crystalline layer between the adjacent thicker parts.

摘要翻译： 行波型光调制器在支撑基板上具有支撑基板和铁电单晶层。 当在调制区域的截面中观察时，铁电单晶层在行波型光调制器的调制区域内具有较厚的部分和更薄的部分。 在铁电单晶层的较厚部分中形成光波导，并且在相邻较厚部分之间的铁电单晶层的较薄部分上设置用于调制的电极。

公开(公告)号：US07068863B2

公开(公告)日：2006-06-27

申请号：US10233929

申请日：2002-09-03

申请人： Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

发明人： Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC分类号： G02F1/35 ,  G02F1/295 ,  G02B6/10

CPC分类号： G02F1/0356 ,  G02F1/2255 ,  G02F2201/505

摘要： An optical waveguide device has an optical waveguide substrate and a supporting body for supporting the substrate. The substrate has a main body made of an electro-optic material and having a main face and an opposing face, optical waveguides, and electrodes for applying an electrical signal on the optical waveguides. At least a part of the opposing face of the supporting body opposing the substrate is covered with a conductive layer. It is thus possible to reduce the resonance due to substrate radiation leakage of the microwave signal into the whole of the optical waveguide substrate and supporting body.

摘要翻译： 光波导装置具有光波导基板和支撑基板的支撑体。 基板具有由电光材料制成并具有主面和相对面的主体，光波导和用于在光波导上施加电信号的电极。 与衬底相对的支撑体的相对面的至少一部分被导电层覆盖。 因此，可以减少由于微波信号的基板辐射泄漏到整个光波导基板和支撑体中的共振。