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1. 发明授权

US5680497A Optical waveguide device 失效
标题翻译：光波导器件
公开(公告)号：US5680497A
公开(公告)日：1997-10-21
申请号：US350894
申请日：1994-12-07
申请人： Minoru Seino , Tadao Nakazawa , Takashi Yamane , Yoshinobu Kubota , Masaharu Doi , Kunio Sugeta , Teruo Kurahashi
发明人： Minoru Seino , Tadao Nakazawa , Takashi Yamane , Yoshinobu Kubota , Masaharu Doi , Kunio Sugeta , Teruo Kurahashi
IPC分类号： G02B6/12 , G02F1/01 , G02F1/035 , G02B6/10
CPC分类号： G02F1/035 , G02F1/0123 , G02F2201/07 , G02F2203/21
摘要： This invention aims at providing an optical waveguide device capable of stably operating for an extended period of time. The optical waveguide device comprises an optical waveguide path formed inside a surface of an electro-optical substrate, a buffer layer formed on the optical waveguide path, and a driving electrode for impressing an electric field so as to change a refractive index of the optical waveguide path, wherein the buffer layer is made of a transparent dielectric or insulator of a mixture between silicon dioxide and an oxide of at least one element selected from the group consisting of the metal elements of the Groups III to VIII, Ib and IIb of the Periodic Table and semiconductor elements other than silicon, or a transparent dielectric or insulator of an oxide between silicon and at least one of the metal elements and semiconductor elements described above.
摘要翻译：本发明的目的在于提供能够长时间稳定运行的光波导装置。光波导装置包括形成在电光基板的表面内的光波导路径，形成在光波导路径上的缓冲层，以及用于施加电场以驱动光波导的折射率的驱动电极路径，其中所述缓冲层由二氧化硅和至少一种元素的氧化物之间的混合物的透明电介质或绝缘体制成，所述至少一种元素选自元素周期表III-VIII，Ib和IIb族的金属元素除了硅之外的表格和半导体元件，或硅与至少一个上述金属元件和半导体元件之间的氧化物的透明电介质或绝缘体。

2. 发明授权

US5404412A Optical waveguide device 失效
标题翻译：光波导器件
公开(公告)号：US5404412A
公开(公告)日：1995-04-04
申请号：US996684
申请日：1992-12-24
申请人： Minoru Seino , Tadao Nakazawa , Takashi Yamane , Yoshinobu Kubota , Masaharu Doi , Kunio Sugeta , Teruo Kurahashi
发明人： Minoru Seino , Tadao Nakazawa , Takashi Yamane , Yoshinobu Kubota , Masaharu Doi , Kunio Sugeta , Teruo Kurahashi
IPC分类号： G02B6/12 , G02F1/01 , G02F1/035 , G02B5/174
CPC分类号： G02F1/035 , G02F1/0123 , G02F2201/07 , G02F2203/21
摘要： This invention aims at providing an optical waveguide device capable of stably operating for an extended period of time. The optical waveguide device comprises an optical waveguide path formed inside a surface of an electro-optical substrate, a buffer layer formed on the optical waveguide path, and a driving electrode for impressing an electric field so as to change a refractive index of the optical waveguide path, wherein the buffer layer is made of a transparent dielectric or insulator of a mixture between silicon dioxide and an oxide of at least one element selected from the group consisting of the metal elements of the Groups III to VIII, Ib and IIb of the Periodic Table and semiconductor elements other than silicon, or a transparent dielectric or insulator of an oxide between silicon and at least one of the metal elements and semiconductor elements described above.
摘要翻译：本发明的目的在于提供能够长时间稳定运行的光波导装置。光波导装置包括形成在电光基板的表面内的光波导路径，形成在光波导路径上的缓冲层，以及用于施加电场以驱动光波导的折射率的驱动电极路径，其中所述缓冲层由二氧化硅和至少一种元素的氧化物之间的混合物的透明电介质或绝缘体制成，所述至少一种元素选自元素周期表III-VIII，Ib和IIb族的金属元素除了硅之外的表格和半导体元件，或硅与至少一个上述金属元件和半导体元件之间的氧化物的透明电介质或绝缘体。

3. 发明授权

US5214724A Optical waveguide device with suppressed DC drift 失效
标题翻译：具有抑制直流电压的光波导器件
公开(公告)号：US5214724A
公开(公告)日：1993-05-25
申请号：US661602
申请日：1991-02-28
申请人： Minoru Seino , Naoyuki Mekada , Tadao Nakazawa , Yoshinobu Kubota , Masaharu Doi
发明人： Minoru Seino , Naoyuki Mekada , Tadao Nakazawa , Yoshinobu Kubota , Masaharu Doi
IPC分类号： G02B6/12 , G02F1/035 , G02F1/21 , G02F1/225
CPC分类号： G02F1/035 , G02F1/225 , G02F1/21 , G02F1/2255 , G02F2201/066 , G02F2203/21
摘要： An optical waveguide device includes an optical waveguide formed on a surface of a substrate having an electrooptical effect, and a pair of electrodes formed on corresponding regions above the optical waveguide and receiving a driving electric signal thereacross. By applying the electric signal to the electrodes, an electric field is formed in a vicinity of the optical waveguide. By changing a distribution of the electric field in accordance with a change in a frequency of the electric signal, it is possible to suppress a DC drift of the device to effectively compensate a fluctuation in operational characteristics due to the DC drift, stress of the like.

4. 发明授权

US06678428B2 Optical modulator 有权
公开(公告)号：US06678428B2
公开(公告)日：2004-01-13
申请号：US09966600
申请日：2001-10-01
申请人： Minoru Seino , Tetsuo Ishizaka , Takehito Tanaka , Masaharu Doi , Tadao Nakazawa
发明人： Minoru Seino , Tetsuo Ishizaka , Takehito Tanaka , Masaharu Doi , Tadao Nakazawa
IPC分类号： G02F1035
CPC分类号： G02F1/2255
摘要： The present invention relates to an optical modulator allowing appropriate interaction between signal electrodes and an optical waveguide, only by matching phases at input ends of the signal electrodes. The optical modulator includes an optical waveguide with its center part branched into two at two Y-branch waveguides, forming first and second waveguide arms, a first signal electrode transmitting a first electric signal interacting with first light propagating through the first waveguide arm in a predetermined manner, a second signal electrode transmitting a second electric signal interacting with second light propagating through the second waveguide arm in a predetermined manner, and earthed electrodes, and can match the interacting timing between the first electric signal and the first light to the interacting timing between the second electric signal and the second light, at a first input end supplying the first electric signal and a second input end supplying the second electric signal.

5. 发明授权

US06999223B2 Optical modulator 有权
公开(公告)号：US06999223B2
公开(公告)日：2006-02-14
申请号：US10704920
申请日：2003-11-12
申请人： Minoru Seino , Tetsuo Ishizaka , Takehito Tanaka , Masaharu Doi , Tadao Nakazawa
发明人： Minoru Seino , Tetsuo Ishizaka , Takehito Tanaka , Masaharu Doi , Tadao Nakazawa
IPC分类号： G02F1/03 , G02F1/07
CPC分类号： G02F1/2255
摘要： The present invention relates to an optical modulator allowing appropriate interaction between signal electrodes and an optical waveguide, only by matching phases at input ends of the signal electrodes. The optical modulator includes an optical waveguide with its center part branched into two at two Y-branch waveguides, forming first and second waveguide arms, a first signal electrode transmitting a first electric signal interacting with first light propagating through the first waveguide arm in a predetermined manner, a second signal electrode transmitting a second electric signal interacting with second light propagating through the second waveguide arm in a predetermined manner, and earthed electrodes, and can match the interacting timing between the first electric signal and the first light to the interacting timing between the second electric signal and the second light, at a first input end supplying the first electric signal and a second input end supplying the second electric signal.

6. 发明授权

US06950218B2 Optical modulator 有权
标题翻译：光调制器
公开(公告)号：US06950218B2
公开(公告)日：2005-09-27
申请号：US10855582
申请日：2004-05-28
申请人： Masaki Sugiyama , Tadao Nakazawa , Masaharu Doi , Takehito Tanaka , Akira Ishii
发明人： Masaki Sugiyama , Tadao Nakazawa , Masaharu Doi , Takehito Tanaka , Akira Ishii
IPC分类号： G02F1/035 , G02F1/03 , G02F1/07 , G02F1/225 , G02F1/245
CPC分类号： G02F1/0316 , G02F1/225
摘要： The present invention has an object to provide a Mach-Zehnder optical modulator with the excellent productivity and reliability, which can obtain a favorable optical response characteristic even if a high frequency electric signal is applied to a signal electrode. To this end, the present optical modulator is configured such that, in a Mach-Zehnder optical modulator in which an optical waveguide and a coplanar electrode are formed on a surface of a substrate having an electro-optic effect, floating electrodes formed using a conducting material, are provided on side faces along parallel waveguides, among side faces substantially perpendicular to the surface of the substrate. Thus, even when a high frequency electric signal is applied to the signal electrode, a phenomenon is suppressed in which a particular frequency resonates within the substrate, and an occurrence of dip in a particular frequency is avoided.
摘要翻译：本发明的目的是提供一种具有优异的生产率和可靠性的马赫 - 策德尔光调制器，即使向信号电极施加高频电信号也能获得良好的光响应特性。为此，本发明的光调制器被配置为使得在具有电光效应的基板的表面上形成有光波导和共面电极的马赫 - 曾德尔光调制器中，使用导电材料沿着平行波导的侧面设置在基本上垂直于基板的表面的侧面之中。因此，即使当向信号电极施加高频电信号时，抑制了特定频率在基板内谐振的现象，并且避免了特定频率的下降的发生。

7. 发明授权

US07239764B2 Optical waveguide device with reduced driving voltage 有权
标题翻译：具有降低驱动电压的光波导器件
公开(公告)号：US07239764B2
公开(公告)日：2007-07-03
申请号：US10298560
申请日：2002-11-19
申请人： Masaharu Doi , Tadao Nakazawa , Masaki Sugiyama , Masaaki Ohyama
发明人： Masaharu Doi , Tadao Nakazawa , Masaki Sugiyama , Masaaki Ohyama
IPC分类号： G02F1/35 , G02B6/26
CPC分类号： G02F1/225
摘要： The present invention provides an optical waveguide device wherein a driving voltage to be applied is reduced. The optical waveguide device comprises a substrate cut in a Z-axis direction and having an electro-optical effect, an interference type optical waveguide formed on the substrate for causing lights which propagate along a plurality of parallel optical waveguides to interfere with each other, and a lumped-constant type electrode for applying a voltage for the electro-optical effect to the light propagating along the optical waveguides which form the interference type optical waveguide. The lumped-constant type electrode complements potentials to be supplied to adjacent ones of the plurality of parallel optical waveguides to each other such that voltages having an equal absolute value but having the opposite signs are applied to the adjacent optical waveguides. The apparatus of the present invention is applied to, for example, an optical communication system.
摘要翻译：本发明提供了一种光波导器件，其中所施加的驱动电压降低。光波导装置包括：沿Z轴方向切割并具有电光效应的基板;形成在基板上的干涉型光波导，用于使沿着多个平行光波导传播的光彼此干涉;以及用于将电光效应的电压施加到沿着形成干涉型光波导的光波导传播的光的集总常数型电极。集总常数型电极补充供给多个平行光波导中的相邻光波导的电位，使得具有相等绝对值但具有相反符号的电压被施加到相邻的光波导。本发明的装置应用于例如光通信系统。

8. 发明申请

US20050231786A1 Variable optical delay circuit 失效
标题翻译：可变光延迟电路
公开(公告)号：US20050231786A1
公开(公告)日：2005-10-20
申请号：US11086395
申请日：2005-03-23
申请人： Shinji Taniguchi , Tadao Nakazawa , Yumi Nakazawa , Masaharu Doi
发明人： Shinji Taniguchi , Tadao Nakazawa , Yumi Nakazawa , Masaharu Doi
IPC分类号： G02F1/01 , G02F1/09
CPC分类号： G02F1/0136 , G02F2201/20
摘要： In a variable optical delay circuit to be used for compensation for polarization mode dispersion of an optical signal and for other purposes, there are provided a first birefringent member, a second birefringent member and a variable optical rotator interposed between the first birefringent member and the second birefringent member for varying a polarization state of light outputted from the first birefringent member. The birefringent members and the variable optical rotator are disposed on the same optical axis, and the optical axis of each of the birefringent members is set to perpendicularly intersect a traveling direction of inputted light. Therefore, by varying the optical rotation angle of the variable optical rotator, an arbitrary delay quantity corresponding thereto is obtainable in a continuous (analog-like) fashion without undergoing spatial separation between polarization components of the inputted light and varying the intensity (loss) of each of the polarization components.
摘要翻译：在用于光信号的偏振模色散补偿的可变光延迟电路中，为了其他目的，提供了一种第一双折射元件，第二双折射元件和插入第一双折射元件与第二双折射元件之间的可变光旋转器双折射构件，用于改变从第一双折射构件输出的光的偏振状态。双折射元件和可变光旋转器设置在相同的光轴上，并且每个双折射元件的光轴被设定为与输入光的行进方向垂直相交。因此，通过改变可变光旋转器的光旋转角度，可以以连续（类似方式）的方式获得与其对应的任意延迟量，而不会在输入光的偏振分量之间经历空间分离并改变输入光的强度（损耗）每个偏振分量。

9. 发明授权

US06917732B2 Connecting method of optical function devices, and optical apparatus 有权
标题翻译：光功能元件连接方法及光学仪器
公开(公告)号：US06917732B2
公开(公告)日：2005-07-12
申请号：US10855527
申请日：2004-05-28
申请人： Hideyuki Miyata , Yoshihiko Kaitoh , Tadao Nakazawa , Masaharu Doi
发明人： Hideyuki Miyata , Yoshihiko Kaitoh , Tadao Nakazawa , Masaharu Doi
IPC分类号： G02B6/024 , G02B6/12 , G02B6/30 , G02B6/34 , G02B6/42 , G02F1/11 , H04B10/07 , H04B10/25 , H04B10/2569 , H04B10/29 , G02B6/126 , G02B6/27
CPC分类号： G02B6/29302 , G02B6/12004 , G02B6/2706 , G02B6/274 , G02B6/30 , G02B6/4246 , G02F1/116 , G02F2201/16
摘要： The present invention aims at providing a connecting method capable of suppressing an influence of stray light for a plurality of optical function devices formed on the same substrate, and an optical apparatus applied with the control method. To this end, in the connecting method of optical function devices according to the present invention, the plurality of optical function devices formed on the same substrate are cascade connected so that both ends of an optical path passing through the plurality of optical function devices are positioned on the same end face of the substrate. According to such a connecting method, it becomes possible to effectively suppress a leakage of stray light from an optical input side to an optical output side.
摘要翻译：本发明的目的在于提供能够抑制杂散光对同一基板上形成的多个光学功能元件的影响的连接方法，以及应用了该控制方法的光学装置。为此，在根据本发明的光功能器件的连接方法中，形成在同一衬底上的多个光学功能器件被级联连接，使得穿过多个光学功能器件的光路的两端被定位在基板的相同端面上。根据这种连接方式，能够有效地抑制杂散光从光输入侧向光输出侧的泄漏。

10. 发明授权

US06783282B2 Optical wavelength filter 有权
标题翻译：光波长滤波器
公开(公告)号：US06783282B2
公开(公告)日：2004-08-31
申请号：US10106359
申请日：2002-03-27
申请人： Tadao Nakazawa , Hideyuki Miyata , Masaharu Doi
发明人： Tadao Nakazawa , Hideyuki Miyata , Masaharu Doi
IPC分类号： G02F1335
CPC分类号： G02F1/125 , G02F1/116 , G02F2201/16 , G02F2203/055 , G02F2203/06
摘要： The present invention aims at providing an optical wavelength filter of band rejection type capable of reliably and stably blocking a light of a desired wavelength from passing through. To this end, the optical wavelength filter of the present invention comprises a plurality of optical filter sections each blocking the light corresponding to the selected wavelength from passing through, the respective optical filter sections being cascade connected to be in a multi-staged structure, wherein the selected wavelengths in the optical filter sections are deviated from one another, to form a blocking band having a wavelength band corresponding to a deviation amount.
摘要翻译：本发明旨在提供一种能够可靠且稳定地阻挡所需波长的光通过的带阻型光波长滤波器。为此，本发明的光波长滤波器包括多个光滤波器部分，每个光滤波器部分阻挡对应于所选波长的光通过，各滤光器部分级联连接成多级结构，其中光滤波器部分中所选择的波长彼此偏离，以形成具有对应于偏差量的波长带的阻挡带。

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