公开(公告)号：US07474812B2

公开(公告)日：2009-01-06

申请号：US10566735

申请日：2005-06-08

申请人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

发明人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

IPC分类号： G02F1/035 ,  G02B6/10

CPC分类号： G02F1/225 ,  G02F1/0123 ,  G02F2201/58

摘要： An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident to the input optical waveguide into two beams, two interaction optical waveguides which modulate a light beam phase by applying a voltage between a center electrode and ground electrodes, a multiplexing optical waveguide which multiplexes the light beams which propagate through the two interaction optical waveguides, and an output optical waveguide which is connected to the multiplexing optical waveguide through a multiplexing point. In the optical modulator, a high-order mode light beam which is generated by multiplexing the phase-modulated light beam and which is radiated from the multiplexing point to an inside of the substrate as two radiant light beams while the high-order mode light beam hardly propagates through the output optical waveguide, and at least one of the two radiant light beams is detected by a monitor photodetector. The output optical waveguide is formed while deformed in order to secure a space for mounting the monitor photodetector such that at least one of optical axes of the radiant light beams in a substrate end portion located on the output optical waveguide and an end of the output optical waveguide are separated from each other by a predetermined distance.

摘要翻译： 光调制器在具有电光效应的基板上具有包括输入光波导的光波导，将入射到输入光波导的光束分支成两束的分支光波导，两个调制光的相互作用的光波导 通过在中心电极和接地电极之间施加电压，多路复用通过两个相互作用的光波导传播的光束的多路复用光波导和通过多路复用点连接到复用光波导的输出光波导。 在光调制器中，高阶模式光束是通过将相位调制光束多路复用而产生的，并且从多路复用点辐射到基板的内部作为两个辐射光束，而高阶模式光束 几乎不通过输出光波导传播，并且两个辐射光束中的至少一个被监视器光检测器检测。 输出光波导形成为变形，以便确保用于安装监视器光电检测器的空间，使得辐射光束的光轴中的至少一个位于位于输出光波导上的基板端部和输出光学波导的端部 波导彼此隔开预定距离。

公开(公告)号：US20080044123A1

公开(公告)日：2008-02-21

申请号：US10566735

申请日：2005-06-08

申请人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

发明人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

IPC分类号： G02F1/035

CPC分类号： G02F1/225 ,  G02F1/0123 ,  G02F2201/58

摘要： An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident to the input optical waveguide into two beams, two interaction optical waveguides which modulate a light beam phase by applying a voltage between a center electrode and ground electrodes, a multiplexing optical waveguide which multiplexes the light beams which propagate through the two interaction optical waveguides, and an output optical waveguide which is connected to the multiplexing optical waveguide through a multiplexing point. In the optical modulator, a high-order mode light beam which is generated by multiplexing the phase-modulated light beam and which is radiated from the multiplexing point to an inside of the substrate as two radiant light beams while the high-order mode light beam hardly propagates through the output optical waveguide, and at least one of the two radiant light beams is detected by a monitor photodetector. The output optical waveguide is formed while deformed in order to secure a space for mounting the monitor photodetector such that at least one of optical axes of the radiant light beams in a substrate end portion located on the output optical waveguide and an end of the output optical waveguide are separated from each other by a predetermined distance.

摘要翻译： 光调制器在具有电光效应的基板上具有包括输入光波导的光波导，将入射到输入光波导的光束分支成两束的分支光波导，两个调制光的相互作用的光波导 通过在中心电极和接地电极之间施加电压，多路复用通过两个相互作用的光波导传播的光束的多路复用光波导和通过多路复用点连接到复用光波导的输出光波导。 在光调制器中，高阶模式光束是通过将相位调制光束多路复用而产生的，并且从多路复用点辐射到基板的内部作为两个辐射光束，而高阶模式光束 几乎不通过输出光波导传播，并且两个辐射光束中的至少一个被监视器光检测器检测。 输出光波导形成为变形，以便确保用于安装监视器光电检测器的空间，使得辐射光束的光轴中的至少一个位于位于输出光波导上的基板端部和输出光学波导的端部 波导彼此隔开预定距离。

公开(公告)号：US20060274991A1

公开(公告)日：2006-12-07

申请号：US10565404

申请日：2005-06-08

申请人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

发明人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

IPC分类号： G02B6/12

CPC分类号： G02B6/4202 ,  G02B6/12004 ,  G02B6/262 ,  G02B6/30 ,  G02F1/2255

摘要： A waveguide type optical device has an optical waveguide formed on a substrate, functional optical waveguides provided to the optical waveguide, at least one of an optical input end face and an optical output end face for the optical waveguide which are provided to substrate end faces which are ends at longitudinal direction sides of the substrate, and at least one of an input optical waveguide connecting the optical input end face and the functional optical waveguides, and an output optical waveguide connecting the optical output end face and the functional optical waveguides. At least one of the input optical waveguide and the output optical waveguide is formed so as to form angles other than 0 with the functional optical waveguides at the at least one of the optical input end face and the optical output end face, and so as to make angles formed to the substrate end faces at the respective sides different from 90°.

摘要翻译： 波导型光学器件具有形成在基板上的光波导，提供给光波导的功能光波导，设置在基板端面的光波导的光输入端面和光输出端面中的至少一个， 在基板的纵向方向上端部，并且连接光输入端面和功能光波导的输入光波导中的至少一个以及连接光输出端面和功能光波导的输出光波导。 输入光波导和输出光波导中的至少一个形成为在光输入端面和光输出端面中的至少一个上形成功能光波导以外的θ以外的角度，并且 使得在与90°不同的相应侧面上的基板端面形成角度。

公开(公告)号：US07330613B2

公开(公告)日：2008-02-12

申请号：US10565404

申请日：2005-06-08

申请人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

发明人： Kenji Kawano ,  Masaya Nanami ,  Makoto Saito ,  Toru Nakahira ,  Yuji Sato ,  Seiji Uchida

IPC分类号： G02B6/12

CPC分类号： G02B6/4202 ,  G02B6/12004 ,  G02B6/262 ,  G02B6/30 ,  G02F1/2255

摘要： A waveguide type optical device has an optical waveguide formed on a substrate, functional optical waveguide an optical input end face and an optical output end face which are provided to respective substrate end faces an input optical waveguide connecting the optical input end face and the functional optical waveguides, an output optical waveguide connecting the optical output end face and the functional optical waveguides, and a signal light monomode optical fiber. The input optical waveguide and the output optical waveguide is formed so as to form angles other than 0° with the functional optical waveguides at the optical input end face and the optical output end face respectively, such that an angle between each of the input optical waveguide and the output optical waveguide with respect to a corresponding one of the substrate end faces is other than 90°.

摘要翻译： 波导型光学器件具有形成在基板上的光波导，功能光波导，光输入端面和光输出端面，其设置在各个基板端面上，连接光输入端面和功能光学 波导，连接光输出端面和功能光波导的输出光波导，以及信号光单模光纤。 输入光波导和输出光波导形成为在光输入端面和光输出端面分别与功能光波导形成0°以外的角度，使得每个输入光波导 并且输出光波导相对于基板端面中的相应一个不是90°。

公开(公告)号：US20090297087A1

公开(公告)日：2009-12-03

申请号：US12471838

申请日：2009-05-26

申请人： Kenji Kawano ,  Seiji Uchida ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Toru Nakahira ,  Nobuhiro Igarashi ,  Satoshi Matsumoto

发明人： Kenji Kawano ,  Seiji Uchida ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Toru Nakahira ,  Nobuhiro Igarashi ,  Satoshi Matsumoto

IPC分类号： G02F1/035

CPC分类号： G02F1/2255 ,  G02F2001/212

摘要： Herein disclosed is an optical modulator, having: a substrate (1); and a center and ground electrodes (4a to 4c), in which the substrate has ridge portions (8a to 8c), the center and ground electrodes are respectively formed above the ridge portions, the ridge portions below the center and ground electrodes respectively have top parts (10a, 10b) having a respective first and second end points (18, 19) separated with a distance of “WR”, the substrate has a bottom surface (21b) between the ridge portions having center and midway points (23, 24) positioned with a respective distance of WR/2 and WR/N ( 3 ≦N≦25 ) from the first end point, the ridge portion below the center electrode has a normal line (13), and the center point and the midway point define a straight line (25) crossed with the normal line at an angle larger or equal to 90.1°.

摘要翻译： 本文公开了一种光调制器，具有：基板（1）; 以及其中基板具有脊部分（8a至8c）的中心和接地电极（4a至4c），中心接地电极分别形成在脊部上方，中心部分和接地电极下方的脊部分别具有顶部 具有以“WR”的距离分开的相应的第一和第二端点（18,19）的部分（10a，10b），所述基板在具有中心点和中间点（23,24）的脊部之间具有底表面 ）与第一端点分别具有WR / 2和WR / N（3 <= N <= 25）的距离，中心电极下方的脊部具有法线（13），中心点和 中间点限定与法线交叉的直线（25），角度大于或等于90.1°。

公开(公告)号：US06891982B2

公开(公告)日：2005-05-10

申请号：US10333546

申请日：2002-05-23

申请人： Kenji Kawano ,  Toru Nakahira ,  Seiji Uchida ,  Masaya Nanami ,  Yuji Sato

发明人： Kenji Kawano ,  Toru Nakahira ,  Seiji Uchida ,  Masaya Nanami ,  Yuji Sato

IPC分类号： G02F1/225 ,  G02F1/01 ,  G02F1/035 ,  G02F1/295 ,  G02F1/355

CPC分类号： G02F1/2255 ,  G02F1/225 ,  G02F2201/126 ,  G02F2203/21

摘要： An optical waveguide for guided an incident light is formed on a substrate having an electro-optic effect. A first buffer layer is formed to cover an upper surface of the substrate. A conductive film is formed above the first buffer layer. A center electrode and a ground electrode are formed for applying a voltage in order to induce an electric field in the optical waveguide. A second buffer layer is formed between the conductive film and at least one of the center electrode and the ground electrode. The conductive film is formed to be present on at least a part below the ground electrode. A light guided through the optical waveguide is modulated by changing a phase by a voltage applied to the optical waveguide. Thereby, a thermal drift can be effectively restricted so that an optical modulation device having excellent electric characteristics can be realized.

摘要翻译： 在具有电光效应的基板上形成用于引导入射光的光波导。 形成第一缓冲层以覆盖基板的上表面。 导电膜形成在第一缓冲层上方。 形成中心电极和接地电极以施加电压以便在光波导中引起电场。 在导电膜和至少一个中心电极和接地电极之间形成第二缓冲层。 导电膜形成为存在于接地电极下方的至少一部分上。 通过光波导引导的光被施加到光波导的电压改变相位来调制。 因此，可以有效地限制热漂移，从而可以实现具有优异电特性的光调制装置。

公开(公告)号：US08311371B2

公开(公告)日：2012-11-13

申请号：US11884407

申请日：2006-02-16

申请人： Kenji Kawano ,  Masaya Nanami ,  Hiroaki Senda ,  Takeshi Hondo ,  Seiji Uchida ,  Yuji Sato ,  Toru Nakahira

发明人： Kenji Kawano ,  Masaya Nanami ,  Hiroaki Senda ,  Takeshi Hondo ,  Seiji Uchida ,  Yuji Sato ,  Toru Nakahira

IPC分类号： G02F1/035 ,  G02B6/42 ,  G02B6/12

CPC分类号： G02F1/2255 ,  G02F1/0356 ,  G02F2001/212 ,  G02F2202/07 ,  G02F2202/20

摘要： Herein disclosed is an optical modulation device, comprising: a substrate 1 having a polarization non-reversal region 17a and a polarization reversal region 17b; an optical waveguide 18 including first and second branched optical waveguide portions 18a, 18b; and a traveling waveguide including a center electrode 19a and a ground electrode 19b, 19c to have an electric signal applied thereto, said traveling waveguide and said first and second branched optical waveguide portions collectively forming an interaction portion to have said incident light interacted with said electric signal, said interaction portion being constituted by a first interaction sub-portion 20a and a second interaction sub-portion 20b, said first and second interaction sub-portions being respectively positioned in regions of said substrate having opposite polarization orientations with each other, in which said center electrode is positioned in face to face relationship with one of said first and second branched optical waveguide portions at said first and second interaction sub-portion to ensure that said incident light in said first and second branched optical waveguide portions are phase modulated, and in which said interaction portion includes an optical waveguide shift sub-portion sandwiched between said first and second interaction sub-portions to have positions of said first and second branched optical waveguide portions shifted therein in a transverse direction, ensuring that positions of said first and second optical waveguides relative to said center and ground electrodes are interchanged between said first and second interaction sub-portions.

摘要翻译： 这里公开了一种光调制装置，包括：具有极化非反转区域17a和极化反转区域17b的基板1; 包括第一和第二分支光波导部分18a，18b的光波导18; 以及具有施加电信号的中心电极19a和接地电极19b，19c的行进波导，所述行波导管和所述第一和第二分支光波导部分共同形成相互作用部分，以使所述入射光与所述电 信号，所述相互作用部分由第一相互作用子部分20a和第二相互作用子部分20b构成，所述第一相互作用子部分和第二相互作用子部分分别位于具有相反极化取向的所述基板的区域中，其中 所述中心电极在所述第一和第二相互作用子部分处于与所述第一和第二分支光波导部分中的一个相对面的关系，以确保所述第一和第二分支光波导部分中的所述入射光被相位调制，以及 其中所述相互作用部分包括光波导s 夹在所述第一相互作用子部分和第二相互作用子部分之间的折叠部分，以使所述第一和第二分支光波导部分在横向上移位的位置，确保所述第一和第二光波导相对于所述中心和接地电极的位置 在所述第一和第二相互作用子部分之间互换。

公开(公告)号：US20100209040A1

公开(公告)日：2010-08-19

申请号：US12678534

申请日：2008-09-19

申请人： Kenji Kawano ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Seiji Uchida ,  Nobuhiro Igarashi ,  Toru Nakahira ,  Satoshi Matsumoto

发明人： Kenji Kawano ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Seiji Uchida ,  Nobuhiro Igarashi ,  Toru Nakahira ,  Satoshi Matsumoto

IPC分类号： G02F1/035 ,  G02B6/12

CPC分类号： G02F1/2255 ,  G02F2201/07 ,  G02F2201/12 ,  G02F2203/21

摘要： In an optical modulator comprising substrate 1 having electro-optical effect, two optical waveguides 3a, 3b formed in the substrate, buffer layer 2 formed on the substrate, traveling-wave electrode 4 having center conductor 4a and ground conductors 4b, 4c above the buffer layer, and ridge sections formed with recessed sections 9a to 9c by carving at least a part of the substrate where an electrical field strength of high-frequency electrical signal propagating the traveling-wave electrode is strong, in which the ridge sections include center conductor ridge section 8a having the center conductor formed above and ground conductor ridge section 8b having the ground conductor formed above, and the center conductor ridge section has one of the two optical waveguides formed therein, the recessed sections are practically symmetrical to the center line between the two optical waveguides and the traveling-wave electrode is practically symmetrical to the center line of the center conductor.

摘要翻译： 在具有电光效应的基板1的光调制器中，形成在基板上的两个光波导3a，3b，形成在基板上的缓冲层2，具有中心导体4a的行波电极4和缓冲器上方的接地导体4b，4c 通过雕刻传播行波电极的高频电信号的电场强度强的基板的至少一部分而形成有凹部9a〜9c的层，脊部，其中脊部包括中心导体脊 具有上面形成的中心导体的部分8a和具有形成在上面的接地导体的接地导体脊部分8b，并且中心导体脊部分在其中形成的两个光波导中的一个形成，凹部实际上对称于两者之间的中心线 光波导和行波电极实际上与中心导体的中心线对称。

公开(公告)号：US08204344B2

公开(公告)日：2012-06-19

申请号：US12471838

申请日：2009-05-26

申请人： Kenji Kawano ,  Seiji Uchida ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Toru Nakahira ,  Nobuhiro Igarashi ,  Satoshi Matsumoto

发明人： Kenji Kawano ,  Seiji Uchida ,  Eiji Kawazura ,  Yuji Sato ,  Masaya Nanami ,  Toru Nakahira ,  Nobuhiro Igarashi ,  Satoshi Matsumoto

IPC分类号： G02F1/035

CPC分类号： G02F1/2255 ,  G02F2001/212

摘要： Herein disclosed is an optical modulator, having: a substrate (1); and a center and ground electrodes (4a to 4c), in which the substrate has ridge portions (8a to 8c), the center and ground electrodes are respectively formed above the ridge portions, the ridge portions below the center and ground electrodes respectively have top parts (10a, 10b) having a respective first and second end points (18, 19) separated with a distance of “WR”, the substrate has a bottom surface (21b) between the ridge portions having center and midway points (23, 24) positioned with a respective distance of WR/2 and WR/N (3≦N≦25) from the first end point, the ridge portion below the center electrode has a normal line (13), and the center point and the midway point define a straight line (25) crossed with the normal line at an angle larger or equal to 90.1°.

摘要翻译： 本文公开了一种光调制器，具有：基板（1）; 以及其中基板具有脊部分（8a至8c）的中心和接地电极（4a至4c），中心接地电极分别形成在脊部上方，中心部分和接地电极下方的脊部分别具有顶部 具有以“WR”的距离分开的相应的第一和第二端点（18,19）的部分（10a，10b），所述基板在具有中心点和中间点（23,24）的脊部之间具有底表面 ）与第一端点分别具有WR / 2和WR / N（3＆nlE; N＆nlE; 25）的距离，中心电极下方的脊部具有法线（13），中心点和中点 以大于或等于90.1°的角度定义与法线交叉的直线（25）。

公开(公告)号：US07916981B2

公开(公告)日：2011-03-29

申请号：US12063789

申请日：2006-08-15

申请人： Kenji Kawano ,  Masaya Nanami ,  Yuji Sato ,  Seiji Uchida ,  Nobuhiro Igarashi ,  Toru Nakahira ,  Hiroaki Senda

发明人： Kenji Kawano ,  Masaya Nanami ,  Yuji Sato ,  Seiji Uchida ,  Nobuhiro Igarashi ,  Toru Nakahira ,  Hiroaki Senda

IPC分类号： G02F1/01 ,  G02F1/035 ,  G02B6/12

CPC分类号： G02F1/2255 ,  G02F1/0316 ,  G02F1/0356 ,  G02F2203/25

摘要： An optical modulator, including: a substrate; an optical waveguide embedded in the substrate; a traveling wave electrode mounted on the substrate and having a traveling wave applied thereon so that a light wave is modulated by the traveling wave with an electro-optic effect. The traveling wave electrode includes a center electrode and ground electrodes; in which the optical waveguide has a plurality of interaction optical waveguides that form a Mach-Zehnder optical waveguide that modulates the light wave in a phase modulation manner when the traveling wave is applied to the traveling wave electrode, the interaction optical waveguides form a region where respective widths of the interaction optical waveguides are different from each other, and the center electrode and the ground electrodes are positioned such that interaction efficiencies between the high frequency electric signal and the light wave guided in the respective interaction optical waveguides are substantially equal to each other.

摘要翻译： 一种光调制器，包括：基板; 嵌入基板中的光波导; 安装在基板上并具有施加在其上的行波的行波电极，使得光波被电光效应的行波调制。 行波电极包括中心电极和接地电极; 其中光波导具有多个相互作用的光波导，其形成当将行波施加到行波电极时以相位调制方式调制光波的马赫 - 曾德尔光波导，相互作用光波导形成一个区域， 相互作用光波导的相应宽度彼此不同，并且中心电极和接地电极被定位成使得在各个相互作用光波导中引导的高频电信号和光波之间的相互作用效率基本相等 。