公开(公告)号：US20050211875A1

公开(公告)日：2005-09-29

申请号：US11060565

申请日：2005-02-18

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Takahide Sakamoto ,  Satoshi Shinada

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Takahide Sakamoto ,  Satoshi Shinada

IPC分类号： H01L27/00

CPC分类号： G02F1/2255 ,  G02F2203/15 ,  H04B10/505

摘要： A photoelectric oscillator includes a laser beam projection unit; an optical modulator on an optical path extending from the projection unit, which optical modulator outputs a modulated signal or an optical signal containing a harmonic of the modulated signal and includes a modulation electrode whose resonant frequency band includes the frequency band of the modulation signal; a photoelectric converter for converting the output of the optical modulator to an electric signal; a feedback circuit for selecting from the radio-frequency electric signal obtained from the photoelectric converter an electric signal to be re-supplied to the optical modulator; and an output section for outputting an optical signal containing the modulation signal or a harmonic of the modulation signal or outputting the modulation signal or a harmonic of the modulation signal. A laser beam of sufficient intensity is input from the projection unit to produce a radio-frequency electric signal in the feedback circuit, and the radio-frequency electric signal or an optical signal containing the radio-frequency electric signal or the radio-frequency signal is output from the photoelectric oscillator.

摘要翻译： 光电振荡器包括激光束投影单元; 光调制器从投影单元延伸的光调制器，该光调制器输出调制信号或包含调制信号的谐波的光信号，并包括其调谐电极，其谐振频带包括调制信号的频带; 光电转换器，用于将光调制器的输出转换成电信号; 用于从所述光电转换器获得的所述射频电信号中选择要再次提供给所述光调制器的电信号的反馈电路; 以及输出部分，用于输出包含调制信号或调制信号的谐波的光信号或输出调制信号或调制信号的谐波。 从投影单元输入足够强度的激光束，在反馈电路中产生射频电信号，射频电信号或包含射频电信号或射频信号的光信号为 从光电振荡器输出。

公开(公告)号：US07425696B2

公开(公告)日：2008-09-16

申请号：US11060565

申请日：2005-02-18

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Takahide Sakamoto ,  Satoshi Shinada

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Takahide Sakamoto ,  Satoshi Shinada

IPC分类号： G01N21/25

CPC分类号： G02F1/2255 ,  G02F2203/15 ,  H04B10/505

摘要： A photoelectric oscillator includes a laser beam projection unit; an optical modulator on an optical path extending from the projection unit, which optical modulator outputs a modulated signal or an optical signal containing a harmonic of the modulated signal and includes a modulation electrode whose resonant frequency band includes the frequency band of the modulation signal; a photoelectric converter for converting the output of the optical modulator to an electric signal; a feedback circuit for selecting from the radio-frequency electric signal obtained from the photoelectric converter an electric signal to be re-supplied to the optical modulator; and an output section for outputting an optical signal containing the modulation signal or a harmonic of the modulation signal or outputting the modulation signal or a harmonic of the modulation signal. A laser beam of sufficient intensity is input from the projection unit to produce a radio-frequency electric signal in the feedback circuit, and the radio-frequency electric signal or an optical signal containing the radio-frequency electric signal or the radio-frequency signal is output from the photoelectric oscillator.

摘要翻译： 光电振荡器包括激光束投影单元; 光调制器从投影单元延伸的光调制器，该光调制器输出调制信号或包含调制信号的谐波的光信号，并包括其调谐电极，其谐振频带包括调制信号的频带; 光电转换器，用于将光调制器的输出转换成电信号; 用于从所述光电转换器获得的所述射频电信号中选择要再次提供给所述光调制器的电信号的反馈电路; 以及输出部分，用于输出包含调制信号或调制信号的谐波的光信号或输出调制信号或调制信号的谐波。 从投影单元输入足够强度的激光束，在反馈电路中产生射频电信号，射频电信号或包含射频电信号或射频信号的光信号为 从光电振荡器输出。

公开(公告)号：US20080212915A1

公开(公告)日：2008-09-04

申请号：US11983071

申请日：2007-11-07

申请人： Junichiro Ichikawa ,  Kaoru Higuma ,  Futoshi Yamamoto ,  Satoshi Oikawa ,  Shingo Mori ,  Sunao Kurimura ,  Kenji Kitamura ,  Tetsuya Kawanishi ,  Masahiro Tsuchiya ,  Masayuki Izutsu

发明人： Junichiro Ichikawa ,  Kaoru Higuma ,  Futoshi Yamamoto ,  Satoshi Oikawa ,  Shingo Mori ,  Sunao Kurimura ,  Kenji Kitamura ,  Tetsuya Kawanishi ,  Masahiro Tsuchiya ,  Masayuki Izutsu

IPC分类号： G02F1/035

CPC分类号： G02F1/035 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2202/20

摘要： A nested modulator is provided where the circuit arrangement of modifying electrodes including signal electrodes is simplified, and at the same time, the drive voltage can be lowered.A nested modulator, including: a substrate 20 made of a material having electro-optic effects; an optical waveguide formed on the substrate; and a modulating electrode for modulating light waves which are guided through the optical waveguide, wherein the optical waveguide has a main Mach-Zehnder waveguide 1 and sub-Mach-Zehnder waveguides 2 and 3 provided on two branching waveguides of the main Mach-Zehnder waveguide, and the modulating electrode is provided in a sub-branching waveguide of the sub-Mach-Zehnder waveguides, is characterized in that a polarization reversal region 46 or 47 is formed in a portion of a sub-branching waveguide of each of the sub-Mach-Zehnder waveguides, the modulating electrode is formed of signal electrodes including introduced signal electrodes 40 or 43, branching single electrodes 41 or 44 and lead signal electrodes 42 or 45 as well as ground electrodes for each of sub-Mach-Zehnder waveguides, and the branching signal electrodes which branch from the introduced signal electrode are placed so as to work on two sub-branching waveguides for each of the sub-Mach-Zehnder waveguides.

摘要翻译： 提供了一种嵌入式调制器，其中包括信号电极的修改电极的电路布置被简化，并且同时可以降低驱动电压。 嵌套调制器，包括：由具有电光效应的材料制成的衬底20; 形成在基板上的光波导; 以及用于调制通过光波导引导的光波的调制电极，其中光波导具有设置在主马赫 - 曾德尔波导的两个分支波导上的主马赫 - 曾德尔波导1和副马赫 - 曾德尔波导2 并且所述调制电极设置在所述子马赫 - 曾德尔波导的子分支波导中，其特征在于，在每个所述子马赫 - 曾德尔波导的子分支波导的一部分中形成偏振反转区域46或47， 马赫曾德尔波导，调制电极由包括引入信号电极40或43，分支单电极41或44和引导信号电极42或45以及每个子马赫 - 曾德尔波导的接地电极的信号电极形成，以及 从引入的信号电极分支的分支信号电极被放置成对每个子马赫 - 曾德尔波导的两个子分支波导进行工作。

公开(公告)号：US07689067B2

公开(公告)日：2010-03-30

申请号：US11983071

申请日：2007-11-07

申请人： Junichiro Ichikawa ,  Kaoru Higuma ,  Futoshi Yamamoto ,  Satoshi Oikawa ,  Shingo Mori ,  Sunao Kurimura ,  Kenji Kitamura ,  Tetsuya Kawanishi ,  Masahiro Tsuchiya ,  Masayuki Izutsu

发明人： Junichiro Ichikawa ,  Kaoru Higuma ,  Futoshi Yamamoto ,  Satoshi Oikawa ,  Shingo Mori ,  Sunao Kurimura ,  Kenji Kitamura ,  Tetsuya Kawanishi ,  Masahiro Tsuchiya ,  Masayuki Izutsu

IPC分类号： G02F1/035

CPC分类号： G02F1/035 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2202/20

摘要： A nested modulator is provided where the circuit arrangement of modifying electrodes including signal electrodes is simplified, and at the same time, the drive voltage can be lowered.A nested modulator, including: a substrate 20 made of a material having electro-optic effects; an optical waveguide formed on the substrate; and a modulating electrode for modulating light waves which are guided through the optical waveguide, wherein the optical waveguide has a main Mach-Zehnder waveguide 1 and sub-Mach-Zehnder waveguides 2 and 3 provided on two branching waveguides of the main Mach-Zehnder waveguide, and the modulating electrode is provided in a sub-branching waveguide of the sub-Mach-Zehnder waveguides, is characterized in that a polarization reversal region 46 or 47 is formed in a portion of a sub-branching waveguide of each of the sub-Mach-Zehnder waveguides, the modulating electrode is formed of signal electrodes including introduced signal electrodes 40 or 43, branching single electrodes 41 or 44 and lead signal electrodes 42 or 45 as well as ground electrodes for each of sub-Mach-Zehnder waveguides, and the branching signal electrodes which branch from the introduced signal electrode are placed so as to work on two sub-branching waveguides for each of the sub-Mach-Zehnder waveguides.

摘要翻译： 提供了一种嵌入式调制器，其中包括信号电极的修改电极的电路布置被简化，并且同时可以降低驱动电压。 嵌套调制器，包括：由具有电光效应的材料制成的衬底20; 形成在基板上的光波导; 以及用于调制通过光波导引导的光波的调制电极，其中光波导具有设置在主马赫 - 曾德尔波导的两个分支波导上的主马赫 - 曾德尔波导1和副马赫 - 曾德尔波导2 并且所述调制电极设置在所述子马赫 - 曾德尔波导的子分支波导中，其特征在于，在每个所述子马赫 - 曾德尔波导的子分支波导的一部分中形成偏振反转区域46或47， 马赫曾德尔波导，调制电极由包括引入信号电极40或43，分支单电极41或44和引导信号电极42或45以及每个子马赫 - 曾德尔波导的接地电极的信号电极形成，以及 从引入的信号电极分支的分支信号电极被放置成对每个子马赫 - 曾德尔波导的两个子分支波导进行工作。

公开(公告)号：US08170422B2

公开(公告)日：2012-05-01

申请号：US11658127

申请日：2005-07-19

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu

IPC分类号： H04J14/00

CPC分类号： H04B10/50577 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/50575

摘要： It is an object of the present invention to provide an FSK demodulator which can be used in the optical information and telecommunications and the like, and which can appropriately demodulate an FSK signal by compensating a delay of an optical FSK modulated signal due to dispersion and the like of an optical fiber.The above-mentioned problem is solved by a frequency shift keying (FSK) demodulator (1) composed of a branching filter (2) for branching an optical signal according to wavelengths thereof; a delay adjusting apparatus (3) for adjusting a delay time of two lights branched by the branching filter; a first photodetector (4) for detecting one optical signal branched by the branching filter; a second photodetector (5) for detecting a remaining optical signal branched by the branching filter; and a means (6) for calculating a difference between an output signal of the first photodetector and an output signal of the second photodetector.

摘要翻译： 本发明的目的是提供一种可用于光信息和电信等的FSK解调器，并且可以通过补偿由于色散导致的光FSK调制信号的延迟来适当地解调FSK信号，并且 像光纤一样。 上述问题由用于根据其波长分支光信号的分波器（2）组成的频移键控（FSK）解调器（1）来解决; 延迟调整装置（3），用于调节由分支滤波器分支的两根光的延迟时间; 用于检测由分支滤波器分支的一个光信号的第一光电检测器（4） 第二光电检测器（5），用于检测由分支滤波器分支的剩余光信号; 以及用于计算第一光电检测器的输出信号和第二光电检测器的输出信号之间的差的装置（6）。

公开(公告)号：US07555223B2

公开(公告)日：2009-06-30

申请号：US11038767

申请日：2005-01-21

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu

IPC分类号： H04B10/04 ,  H04B10/12 ,  G02F1/00

CPC分类号： H04B1/7174

摘要： A UWB signal generator includes: a laser light source for generating laser light, an optical intensity modulator for modulating an intensity of laser light from the laser light source, a signal source of the optical intensity modulator for outputting a signal transmitted to the optical intensity modulator, an optical frequency shift keying (optical FSK) modulator to which output light from the optical intensity modulator is input, a signal source for controlling a signal transmitted to an RFC electrode of the optical FSK modulator, a high-frequency electric signal source for controlling a signal transmitted to an RFA electrode and an RFB electrode of the optical FSK modulator, and a high-speed photodetector for detecting an output from the optical FSK modulator.

摘要翻译： UWB信号发生器包括：用于产生激光的激光源，用于调制来自激光光源的激光强度的光强度调制器，用于输出发送到光强度调制器的信号的光强度调制器的信号源 输入来自光强度调制器的输出光的光频移键控（光FSK）调制器，用于控制发送到光FSK调制器的RFC电极的信号的信号源，用于控制光频FSK调制器的高频电信号源 发送到光学FSK调制器的RFA电极和RFB电极的信号，以及用于检测来自光学FSK调制器的输出的高速光电检测器。

公开(公告)号：US07526209B2

公开(公告)日：2009-04-28

申请号：US10960761

申请日：2004-10-08

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu

IPC分类号： H04B10/04

CPC分类号： H04B10/505 ,  H04B1/7163 ,  H04B10/5051 ,  H04B10/5563

摘要： An optical FSK modulator which can be used for an optical information communication is provided. The optical FSK is provided with: a second sub Mach-Zehnder waveguide (MZB) 3; a main Mach-Zehnder waveguide (MZC) 4 including the MZA and MZB and provided with a light input portion and a modulated light output portion; a first direct-current or low-frequency electrode (DCA electrode) 5 controlling a bias voltage between two arms composing the MZA, thereby controlling a phase of light propagating in the two arms of the MZA; a second direct-current or low-frequency electrode (DCB electrode) 6 controlling a bias voltage between two arms composing the MZB, thereby controlling a phase of light propagating in the two arms of the MZB; a first RF electrode (RFA electrode) 7 inputting a radio frequency (RF) signal to the two arms composing the MZA; a second RF electrode (RFB electrode) 8 inputting an RF signal to the two arms composing the MZB; and a traveling-wave-type electrode (RFC electrode) 11 controlling a voltage of the RF signal inputted, thereby controlling a frequency of light outputted from the output portion.

摘要翻译： 提供了可用于光信息通信的光FSK调制器。 光学FSK设有：第二子马赫 - 曾德尔波导（MZB）3; 包括MZA和MZB的主Mach-Zehnder波导（MZC）4，并设置有光输入部分和调制光输出部分; 控制构成MZA的两个臂之间的偏置电压的第一直流或低频电极（DCA电极）5，从而控制在MZA的两个臂中传播的光的相位; 控制构成MZB的两个臂之间的偏置电压的第二直流或低频电极（DCB电极）6，从而控制在MZB的两个臂中传播的光的相位; 向构成MZA的两个臂输入射频（RF）信号的第一RF电极（RFA电极）7; 将RF信号输入到构成MZB的两个臂的第二RF电极（RFB电极）8; 以及控制输入的RF信号的电压的行波型电极（RFC电极）11，从而控制从输出部输出的光的频率。

公开(公告)号：US20080304827A1

公开(公告)日：2008-12-11

申请号：US11658127

申请日：2005-07-19

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu

IPC分类号： H04J14/00

CPC分类号： H04B10/50577 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/50575

摘要： It is an object of the present invention to provide an FSK demodulator which can be used in the optical information and telecommunications and the like, and which can appropriately demodulate an FSK signal by compensating a delay of an optical FSK modulated signal due to dispersion and the like of an optical fiber.The above mentioned problem is solved by a frequency shift keying (FSK) demodulator (1) composed of a branching filyer (2) for branching an optical signal according to wavelengths thereof; a delay adjusting apparutus (3) for adjusting a delay time of two lights branched by the branching filter; a first photodetector (4) for detecting one optical signal branched by the branching filter; a second photodetector (5) for detecting a remaing optical signal branched by the branching filter; and a means (6) for calculating a difference between an output signal of the first photodetector and an output signal of the second photodetector.

摘要翻译： 本发明的目的是提供一种可用于光信息和电信等的FSK解调器，并且可以通过补偿由于色散导致的光FSK调制信号的延迟来适当地解调FSK信号，并且 像光纤一样。 上述问题通过由用于根据其波长分支光信号的分支滤波器（2）组成的频移键控（FSK）解调器（1）来解决; 延迟调节装置（3），用于调节由分支滤波器分支的两根光的延迟时间; 用于检测由分支滤波器分支的一个光信号的第一光电检测器（4） 用于检测由所述分支滤波器分支的再生光信号的第二光电检测器（5）; 以及用于计算第一光电检测器的输出信号和第二光电检测器的输出信号之间的差的装置（6）。

公开(公告)号：US07317569B2

公开(公告)日：2008-01-08

申请号：US11546984

申请日：2006-10-13

申请人： Tetsuya Kawanishi

发明人： Tetsuya Kawanishi

IPC分类号： G02F2/02

CPC分类号： H04B10/50 ,  G02F1/353 ,  G02F2/02 ,  G02F2001/3542 ,  G02F2203/56

摘要： An optical frequency converter that can use a low-amplitude, high-frequency signal for converting a wide range of optical frequencies. The optical frequency converter includes a device for modulating a lightwave of a preset frequency with a modulation signal to generate a group of sidebands thereof, a device for selecting sidebands from among the group of sidebands, and a device for changing modulation signal frequencies and selecting specific sidebands.

摘要翻译： 一种可以使用低幅度，高频信号转换宽范围的光频率的光学变频器。 光变频器包括用调制信号调制预设频率的光波的装置，以产生一组边带，用于从边带组中选择边带的装置，以及用于改变调制信号频率的装置，并选择具体的 边带。

公开(公告)号：US20070255106A1

公开(公告)日：2007-11-01

申请号：US11790978

申请日：2007-04-30

申请人： Tetsuya Kawanishi

发明人： Tetsuya Kawanishi

IPC分类号： A61B1/12

CPC分类号： A61B1/00091 ,  A61B1/015 ,  A61B1/126 ,  A61B1/3132

摘要： An endoscope system for performing medical treatments uses a medical endoscope equipped with an observation window and at least one treatment instrument for medical treatments which are inserted into a body cavity of a human patient through trocar inserted and maintained in incisions formed in the patient body, respectively. The body cavity is inflated with an inflation CO2 gas supplied through one of the trocars. In order to form a curtain of CO2 gas for protection of the observation window from dirt particles, the endoscope has a spray nozzle through which a jet of cleaning CO2 gas is continuously emitted at an emission rate controlled less than leakage of CO2 gas from the body cavity through the trocars.

摘要翻译： 用于进行医疗处理的内窥镜系统使用配备有观察窗的医疗用内窥镜和至少一个医疗用处理器具，其分别插入并保持在患者体内形成的切口中而插入人体患者的体腔内 。 体腔通过一个套管针提供的充气CO 2气充气。 为了形成用于保护观察窗与污垢颗粒的CO 2气体的窗帘，内窥镜具有喷射喷嘴，清洁CO 2气体喷射通过该喷嘴 以低于CO 2 CO 2气体从体腔通过套管针控制的排放速率连续排放。