公开(公告)号：US20020048076A1

公开(公告)日：2002-04-25

申请号：US09911862

申请日：2001-07-24

Applicant: NGK Insulators, Ltd.

Inventor： Atsuo Kondo ,  Jungo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC: G02F001/00

CPC classification number: G02F1/2255 ,  G02F1/0356

Abstract: 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 as viewed in the cross section of the modulating region. Then, 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 in between the adjacent thicker parts.

Abstract translation: 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。 在调制区域的横截面中观察时，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。 然后，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：US20010055453A1

公开(公告)日：2001-12-27

申请号：US09810516

申请日：2001-03-16

Applicant: Matsushita Electric Industrial Co., Ltd. and NGK Insulators, Ltd.

Inventor： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Tatsuo Kawaguchi ,  Takashi Yoshino ,  Minoru Imaeda ,  Kenji Aoki ,  Osamu Mitomi

IPC: G02B006/122 ,  G02F001/365

CPC classification number: G02F1/3775 ,  G02F1/3525 ,  G02F2201/07

Abstract: An optical waveguide element is disclosed, which includes a three-dimensional optical waveguide of a bulky non-linear optical crystal, a substrate, and a joining layer made of an amorphous material through which the substrate is joined to the optical waveguide.

Abstract translation: 公开了一种光波导元件，其包括笨重的非线性光学晶体的三维光波导，衬底和由非晶材料制成的接合层，通过该接合层将衬底接合到光波导。

公开(公告)号：US20040120625A1

公开(公告)日：2004-06-24

申请号：US10628472

申请日：2003-07-29

Applicant: NGK Insulators, Ltd.

Inventor： Osamu Mitomi ,  Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo

IPC: G02F001/035

CPC classification number: G02F1/2255 ,  G02F2202/42

Abstract: 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.

Abstract translation: 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和设置在主体2的一个主面2a侧的光波导3a，3b和电极4B，4C以及一个主面，支撑体10 与另一主面侧的基板2接合，电极具有馈通部。 装置1A还具有设置在主体2的另一主面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：US20030138180A1

公开(公告)日：2003-07-24

申请号：US10291678

申请日：2002-11-12

Applicant: NGK INSULATORS, LTD.

Inventor： Atsuo Kondo ,  Osamu Mitomi ,  Jungo Kondo ,  Kenji Aoki

IPC: G02F001/035 ,  G02B006/26

CPC classification number: G02F1/225 ,  G02F1/0123 ,  G02F1/2255 ,  G02F2201/503 ,  G02F2202/42 ,  G02F2203/21

Abstract: An optical modulator modulates light propagating in a three-dimensional optical waveguide 5 by applying a voltage on the waveguide. The modulator has a three dimensional optical waveguide 5 having at least a pair of branched portions 5b, 5c and a recombining portion 5f of the branched portions 5c, 5d and radiating light of off-mode, and a slab optical waveguide 4 guiding the light of off-mode. The modulator also has modulating electrodes 7A, 7B, 7C for applying a signal voltage and a direct current bias on the waveguide 5 to modulate light propagating in the waveguide 5. The modulator further has a photo detector 13 for detecting light radiated from the slab optical waveguide 4, and a controlling unit 15 for varying the direct current bias based on an output from the photo detector 13 so as to control the operational point of the modulator. According to the modulator, the operational point may be controlled with improved efficiency and stability.

Abstract translation: 光调制器通过在波导上施加电压来调制在三维光波导5中传播的光。 调制器具有三维光波导5，其具有至少一对分支部分5b，5c和分支部分5c，5d的复合部分5f和离散模式的辐射光，并且平板光波导4引导光 关闭模式。 调制器还具有用于在波导5上施加信号电压和直流偏压的调制电极7A，7B，7C，以调制在波导5中传播的光。调制器还具有用于检测从平板光学辐射的光的光电检测器13 波导4和控制单元15，用于根据光电检测器13的输出改变直流偏置，以便控制调制器的工作点。 根据调制器，可以以提高的效率和稳定性来控制操作点。

公开(公告)号：US20030044100A1

公开(公告)日：2003-03-06

申请号：US10233929

申请日：2002-09-03

Applicant: NGK Insulators, Ltd.

Inventor： Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC: G02F001/035

CPC classification number: G02F1/0356 ,  G02F1/2255 ,  G02F2201/505

Abstract: An optical waveguide device 1A has an optical waveguide substrate 15A and a supporting body 8 for supporting the substrate 15A. The substrate 15A has a main body 2 made of an electrooptic material and having a main face 2a and an opposing face 2b, optical waveguides 4A, 4B, and electrodes 3A, 3B, 3C for applying an electrical signal on the optical waveguides. At least a part of the opposing face 8a of the supporting body 8 opposing the substrate 15A is covered with a conductive layer 7A. It is thus possible to reduce the resonance due to substrate radiation of microwave into the whole of the optical waveguide substrate and supporting body.

Abstract translation: 光波导装置1A具有用于支撑基板15A的光波导基板15A和支撑体8。 基板15A具有由电光材料制成并具有主面2a和相对面2b的主体2，光波导4A，4B以及用于在光波导上施加电信号的电极3A，3B，3C。 与基板15A相对的支撑体8的相对面8a的至少一部分被导电层7A覆盖。 因此，可以将由于微波的基板辐射引起的共振减少到整个光波导基板和支撑体。

公开(公告)号：US20020176652A1

公开(公告)日：2002-11-28

申请号：US10123872

申请日：2002-04-16

Applicant: NGK Insulators, Ltd.

Inventor： Osamu Mitomi ,  Takenori Ichigi ,  Masatsugu Oshima ,  Jun Okumura ,  Kenji Aoki ,  Masataka Yamashita

IPC: G02B006/35 ,  G02B006/26 ,  G02B006/10

CPC classification number: G02F1/3137 ,  G02F1/011 ,  G02F1/0147

Abstract: An optical device comprises a core layer; a first clad layer, with the core layer being deposited on a part of surface of the first clad layer; a second clad layer, with the core layer being provided between the first clad layer and the second clad layer; a third clad layer deposited on the second clad, an electrode for heating, and a substrate having a heat-sink function. At least one of the core layer and the clad layers comprises a material having a positive refractive index variation coefficient. The third clad layer has a refractive index smaller than that of the second clad layer.

Abstract translation: 光学装置包括芯层; 第一包覆层，其中所述芯层沉积在所述第一包层的表面的一部分上; 第二包覆层，其中所述芯层设置在所述第一覆盖层和所述第二覆盖层之间; 沉积在第二包层上的第三覆盖层，用于加热的电极和具有散热功能的衬底。 芯层和包覆层中的至少一个包括具有正折射率变化系数的材料。 第三覆盖层的折射率小于第二覆盖层的折射率。

公开(公告)号：US20020159706A1

公开(公告)日：2002-10-31

申请号：US09948007

申请日：2001-09-06

Applicant: NGK Insulators, Ltd.

Inventor： Osamu Mitomi ,  Takenori Ichigi ,  Masatsugu Oshima ,  Jun Okamura ,  Masataka Yamashita

IPC: G02B006/26 ,  G02B006/12

CPC classification number: G02F1/3137 ,  G02B6/1228 ,  G02B6/125

Abstract: The spot size of light propagating through a cross waveguide 22 is larger than the spot size of light propagating through optical input waveguides 21a and 21b, optical output waveguides 23a and 23b, or connection waveguides 24a, 24b, 25a and 25b.

Abstract translation: 通过交叉波导22传播的光的光斑尺寸大于通过光输入波导21a和21b，光输出波导23a和23b或连接波导24a，24b，25a和25b传播的光的光斑尺寸。

公开(公告)号：US20040145797A1

公开(公告)日：2004-07-29

申请号：US10743053

申请日：2003-12-23

Applicant: NGK INSULATORS, LTD.

Inventor： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

IPC: G02F001/29

CPC classification number: G02F1/2255 ,  G02F1/0356

Abstract: 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: nullr>nulls is satisfied where nullr represents the dielectric constant of the supporting substrate and nulls represents the dielectric constant of the dielectric constant of solid, liquid, or gaseous substance in the recess.

Abstract translation: 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。 εilon表示支撑衬底的介电常数，ε表示固体，液体或气态物质在凹槽中的介电常数的介电常数。

公开(公告)号：US20020159738A1

公开(公告)日：2002-10-31

申请号：US10108250

申请日：2002-03-27

Applicant: NGK Insulators, Ltd.

Inventor： Kenji Aoki ,  Jungo Kondo ,  Atsuo Kondo ,  Osamu Mitomi

IPC: G02B006/10

CPC classification number: G02F1/0356 ,  G02F1/2255 ,  G02F2201/127

Abstract: An optical waveguide device 1A has an optical waveguide substrate 10A and a supporting substrate 6 supporting the substrate 10A. The substrate 10A has a main body 4 made of an electrooptic material and having first main face 4a and a second main face 4b, an optical waveguide 3 formed in or on the main body 4 and an electrode 2A, 2B or 2C formed on the side of the first main face 4a of the main body 4. The supporting substrate 6 is joined with the second main face 4b of the main body 4. A low dielectric portion 11 with a dielectric constant lower than that of the electrooptic material is formed in the supporting substrate 6.

Abstract translation: 光波导元件1A具有光波导基板10A和支撑基板10A的支撑基板6。 基板10A具有由电光材料制成的主体4，其具有第一主面4a和第二主面4b，形成在主体4中或之上的光波导3和形成在主体4上的电极2A，2B或2C 主体4的第一主面4a。支撑基板6与主体4的第二主面4b连接。介电常数低于电光材料的低介电部分11形成在 支撑基板6。

公开(公告)号：US20020126932A1

公开(公告)日：2002-09-12

申请号：US09954368

申请日：2001-09-17

Applicant: NGK Insulators, Ltd.

Inventor： Makoto Minakata ,  Jungo Kondo ,  Atsuo Kondo ,  Kenji Aoki ,  Osamu Mitomi

IPC: G02F001/035 ,  G02F001/01

CPC classification number: G02F1/2255 ,  G02F1/0305

Abstract: 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.

Abstract translation: 行波型光调制器具有由电光材料制成的基板，在基板顶表面上制造的光波导，以及通过光波导调制光波的电极。 从衬底的底表面部分地薄化衬底，以形成第一薄化部分和第二薄化部分，使得第一薄化部分的厚度被设定为大于第二薄化部分的厚度，并且光波导 位于第一变薄部分中。