公开(公告)号：US07689066B2

公开(公告)日：2010-03-30

申请号：US11841188

申请日：2007-08-20

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

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

IPC分类号： G02F1/035 ,  G02B6/26

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  G02F2001/212 ,  G02F2201/58 ,  G02F2203/20

摘要： An optical modulator is provided for modulating light propagating in a three-dimensional optical waveguide 5 by applying a voltage thereto. The optical modulator has the three-dimensional optical waveguide 5 including at least one pair of branch optical waveguides 5c and 5d, a multiplexing part 5e of the branch optical waveguides and an emission part 5f provided in the downstream of the multiplexing part, modulation electrodes 3A, 3B and 4 for applying a signal voltage for modulating light propagating in the three-dimensional optical waveguide 5, and guiding waveguides 6A and 6B for guiding primary mode light from the multiplexing part. Thickness of the substrate is 20 μm or less at least under the modulation electrodes, and an operation point of the optical modulator is controlled by changing, based on light output from the guiding waveguides, DC bias applied onto the modulation electrodes.

摘要翻译： 提供了一种光调制器，用于通过向其施加电压来调制在三维光波导5中传播的光。 光调制器具有包括至少一对分支光波导5c和5d的三维光波导5，分支光波导的复用部分5e和设置在复用部分下游的发射部分5f，调制电极3A ，3B和4，用于施加用于调制在三维光波导5中传播的光的信号电压，以及引导波导6A和6B以引导来自复用部分的初级模式光。 至少在调制电极下方，基板的厚度为20μm以下，通过基于来自引导波导的光的输出，施加到调制电极上的DC偏置来改变光调制器的操作点。

公开(公告)号：US20090290830A1

公开(公告)日：2009-11-26

申请号：US12510535

申请日：2009-07-28

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

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

IPC分类号： G02F1/035

CPC分类号： G02F1/0356 ,  G02F1/0316 ,  G02F2203/50

摘要： The invention provides an optical phase modulator having a substrate made of an electro-optical material, a signal electrode provided on the substrate and first and second ground electrodes provided on both sides of the signal electrode. The electrodes are provided so that a size of the first gap between the first ground electrode and the signal electrode is smaller than a size of a second gap between the second ground electrode and the signal electrode. Furthermore, an optical waveguide is provided in the first gap as an optical phase modulator and not provided in the second gap. A driving voltage required for the phase adjustments is thereby lowered, the impedance matching is easily made and excellent radio frequency property can be realized.

摘要翻译： 本发明提供一种光学相位调制器，其具有由电光材料制成的基板，设置在基板上的信号电极以及设置在信号电极两侧的第一和第二接地电极。 设置电极，使得第一接地电极和信号电极之间的第一间隙的尺寸小于第二接地电极和信号电极之间的第二间隙的尺寸。 此外，在第一间隙中设置光波导作为光相位调制器，并且不设置在第二间隙中。 相位调整所需的驱动电压因此降低，容易进行阻抗匹配，能够实现优异的射频特性。

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。

公开(公告)号：US20060120654A1

公开(公告)日：2006-06-08

申请号：US11344297

申请日：2006-01-31

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

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

IPC分类号： G02F1/035

CPC分类号： G02F1/2255 ,  G02F2203/25

摘要： An optical modulator 1C has a substrate 2 of an electro-optic material and having first and second main faces, an optical waveguide formed on the substrate 2 and having first branched part 5 and a second branched part 3, and ground electrodes 4A, 4C and a signal electrode 4B provided on the side of the first main face of the substrate. The first branched part 5 and second branched part 3 are provided between the edges of the ground electrodes 4A, 4C and the edge of the signal electrode 4B, respectively. Microwave electric fields are applied onto interacting parts of the first branched part 5 and second branched part 3, respectively, to modulate light propagating in the first branched part 5 and second branched part 3, respectively. The integral values of field intensities over interaction lengths with electrodes in the first and second branched parts are different from each other so that a predetermined chirp amount is obtained.

摘要翻译： 光调制器1C具有电光材料的基板2，具有第一主面和第二主面，形成在基板2上的具有第一分支部5和第二分支部3的光波导，接地电极4A， 4C和设置在基板的第一主面侧的信号电极4B。 第一分支部分5和第二分支部分3分别设置在接地电极4A，4C的边缘和信号电极4B的边缘之间。 微波电场分别施加到第一分支部分5和第二分支部分3的相互作用部分上，以分别调制在第一分支部分5和第二分支部分3中传播的光。 与第一和第二分支部分中的电极相互作用长度的场强的积分值彼此不同，从而获得预定的啁啾量。

公开(公告)号：US20050047703A1

公开(公告)日：2005-03-03

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： G02F1/01 ,  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：US20110262071A1

公开(公告)日：2011-10-27

申请号：US13178964

申请日：2011-07-08

申请人： Osamu Mitomi ,  Kenji Aoki ,  Yuji Hori ,  Jungo Kondo ,  Yasunori Iwasaki

发明人： Osamu Mitomi ,  Kenji Aoki ,  Yuji Hori ,  Jungo Kondo ,  Yasunori Iwasaki

IPC分类号： G02F1/035 ,  G02B6/125

CPC分类号： G02B6/125 ,  G02B6/1228 ,  G02B6/29352 ,  G02B2006/12159 ,  G02F1/0508

摘要： An optical waveguide is formed on a ferroelectric substrate having a thickness of 20 μm or less by diffusion of a dopant or ion exchange. The optical waveguide has a non-branched section 2a operating on single mode and a pair of branched sections branched from the non-branched section 2a. Each of the branched sections has a connecting part 7 extending from a branching end 10 and a multi mode propagating part 8 continuously formed from the connecting part 7. The multi mode propagating part 8 has a width “m” larger than a width “t” of the non-branched section. A width “p” of the connecting part increases from the non-branched section 2a toward the multi mode propagating part 8.

摘要翻译： 通过掺杂剂或离子交换剂的扩散，在厚度为20μm以下的强电介质基板上形成光波导。 光波导具有在单模上工作的非分支部分2a和从非分支部分2a分支的一对分支部分。 每个分支部分具有从分支端10延伸的连接部分7和从连接部分7连续形成的多模传播部分8.多模传播部分8具有大于宽度“t”的宽度“m” 的非支化部分。 连接部的宽度“p”从非分支部2a向多模传播部8增大。

公开(公告)号：US20100329601A1

公开(公告)日：2010-12-30

申请号：US12846076

申请日：2010-07-29

申请人： Akiyoshi Ide ,  Jungo Kondo ,  Osamu Mitomi ,  Yasunori Iwasaki ,  Kenji Aoki

发明人： Akiyoshi Ide ,  Jungo Kondo ,  Osamu Mitomi ,  Yasunori Iwasaki ,  Kenji Aoki

IPC分类号： G02F1/035

CPC分类号： G02B6/125 ,  G02F1/225 ,  G02F2001/212

摘要： An optical waveguide device includes a substrate of a ferroelectric material, at least a pair of electrodes 4A, 4B provided on one main face of the substrate, and a channel-type optical waveguide 5A formed in a gap 1 of the pair of the electrodes. The optical waveguide 5A has a curved part 15. A central line C of the gap 1 is provided outside of a center line WC of the optical waveguide with respect to the center O of curvature of the curved part 15.

摘要翻译： 光波导器件包括铁电材料的基板，设置在基板的一个主面上的至少一对电极4A，4B，以及形成在该对电极的间隙1中的沟道型光波导5A。 光波导5A具有弯曲部15.间隙1的中心线C相对于弯曲部15的曲率中心O设置在光波导的中心线WC的外侧。

公开(公告)号：US07787773B1

公开(公告)日：2010-08-31

申请号：US11520987

申请日：2006-09-14

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

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

IPC分类号： H04B10/00

CPC分类号： G01S13/87 ,  G01S7/352 ,  G01S13/34 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9325 ,  G01S2013/9375 ,  G02F1/0516

摘要： It is provided a radio oscillating system for oscillating a radio signal. The system has an optical modulator for oscillation, a modulating means for inputting a modulating signal of a frequency of fm into the optical modulator to modulate a carrier wave so as to interpose sideband waves onto the carrier wave at positions shifted with respect to the frequency of the carrier wave by the frequency “fm”; and an optical receiver for oscillation for receiving beam from the optical modulator and converting the beam into an electrical signal. The system further has a radiating means for radiating radio signal of a frequency of 2fm based on the electrical signal. An input voltage Vp-p applied on the optical modulator is 1.0 times or more and 1.99 times or less of a half-wavelength voltage Vπ of the optical modulator.

摘要翻译： 提供了一种用于振荡无线电信号的无线电振荡系统。 该系统具有用于振荡的光调制器，用于将fm频率的调制信号输入到光调制器中以调制载波的调制装置，以便在相对于频率的位置偏移的位置处将边带波插入到载波上 载波频率“fm”; 以及用于振荡的光接收器，用于从光调制器接收光束并将光束转换成电信号。 该系统还具有用于基于电信号辐射频率为2fm的无线电信号的辐射装置。 施加在光调制器上的输入电压Vp-p为半波长电压V＆pgr的1.0倍以上且1.99倍以下。 的光调制器。

公开(公告)号：US07787714B2

公开(公告)日：2010-08-31

申请号：US12336628

申请日：2008-12-17

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

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

IPC分类号： G02F1/295

CPC分类号： G02F1/0356 ,  G02F1/2255 ,  G02F2201/122

摘要： An object of the present invention is to widen the band of the velocity matching frequency as well as to reduce the electrode loss in the modulation electrode. An optical modulator has a substrate made of an electro-optical material, a signal electrode 3A, 3B and a ground electrode 2A, 2B provided on the substrate, an optical waveguide provided on the substrate. The signal electrode and the ground electrode each has an interaction section 2a, 2c, 3a, 3c and a feed-through section 2b, 2d, 3b, 3d. Light propagating through the optical waveguide is modulated by applying a modulation voltage on the interaction section. The thickness of the feed-through section is greater than that of the interaction section.

摘要翻译： 本发明的目的是扩大速度匹配频率的频带以及减小调制电极中的电极损耗。 光调制器具有由电光材料制成的基板，设置在基板上的信号电极3A，3B和接地电极2A，2B，设置在基板上的光波导。 信号电极和接地电极各自具有相互作用部分2a，2c，3a，3c和馈通部分2b，2d，3b，3d。 通过在相互作用部分施加调制电压来调制通过光波导传播的光。 馈通部分的厚度大于相互作用部分的厚度。

公开(公告)号：US20100201562A1

公开(公告)日：2010-08-12

申请号：US11520987

申请日：2006-09-14

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

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

IPC分类号： G01S13/34

CPC分类号： G01S13/87 ,  G01S7/352 ,  G01S13/34 ,  G01S13/931 ,  G01S2013/9321 ,  G01S2013/9325 ,  G01S2013/9375 ,  G02F1/0516

摘要： It is provided a radio oscillating system for oscillating a radio signal. The system has an optical modulator for oscillation, a modulating means for inputting a modulating signal of a frequency of fm into the optical modulator to modulate a carrier wave so as to interpose sideband waves onto the carrier wave at positions shifted with respect to the frequency of the carrier wave by the frequency “fm”; and an optical receiver for oscillation for receiving beam from the optical modulator and converting the beam into an electrical signal. The system further has a radiating means for radiating radio signal of a frequency of 2 fm based on the electrical signal. An input voltage Vp−p applied on the optical modulator is 1.0 times or more and 1.99 times or less of a half-wavelength voltage Vπ of the optical modulator.

摘要翻译： 提供了一种用于振荡无线电信号的无线电振荡系统。 该系统具有用于振荡的光调制器，用于将fm频率的调制信号输入到光调制器中以调制载波的调制装置，以便在相对于频率的位置偏移的位置处将边带波插入到载波上 载波频率“fm”; 以及用于振荡的光接收器，用于从光调制器接收光束并将光束转换成电信号。 该系统还具有用于基于电信号辐射频率为2fm的无线电信号的辐射装置。 施加在光调制器上的输入电压Vp-p为半波长电压V＆pgr的1.0倍以上且1.99倍以下。 的光调制器。