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31. 发明授权

US07986452B2 High-speed multiplied signal generating method and device 有权
标题翻译：高速倍增信号产生方法及装置
公开(公告)号：US07986452B2
公开(公告)日：2011-07-26
申请号：US12440241
申请日：2006-09-06
申请人： Tetsuya Kawanishi , Takahide Sakamoto , Masahiro Tsuchiya
发明人： Tetsuya Kawanishi , Takahide Sakamoto , Masahiro Tsuchiya
IPC分类号： G02F2/02 , G02F1/35
CPC分类号： G02F1/353 , G02F2001/212
摘要： It is an object of the present invention to provide an apparatus that can obtain a multiplied harmonic signal fast and with ease, and the method using the apparatus.The object is attained by the method for obtaining a multiple harmonic signal comprises, suppressing a different parity optical signal having parity different from fundamental optical signals; suppressing residual optical signals using an optical filter after suppressing the different parity optical signal; and obtaining the frequency difference component using the fundamental optical signals, and the device realizing the method.
摘要翻译：本发明的目的是提供一种能够快速且容易地获得倍增谐波信号的装置，以及使用该装置的方法。该目的是通过用于获得多重谐波信号的方法来实现的，包括：抑制具有与基本光信号不同的奇偶校验的不同奇偶校验光信号; 在抑制不同奇偶校验光信号之后，使用滤光器抑制残留光信号; 并使用基本光信号获得频差分量，以及实现该方法的装置。

32. 发明申请

US20100053732A1 High-Speed Multiplied Signal Generating Method And Device 有权
标题翻译：高速乘法信号发生方法与装置
公开(公告)号：US20100053732A1
公开(公告)日：2010-03-04
申请号：US12440241
申请日：2006-09-06
申请人： Tetsuya Kawanishi , Takahide Sakamoto , Masahiro Tsuchiya
发明人： Tetsuya Kawanishi , Takahide Sakamoto , Masahiro Tsuchiya
IPC分类号： G02F2/02
CPC分类号： G02F1/353 , G02F2001/212
摘要： It is an object of the present invention to provide an apparatus that can obtain a multiplied harmonic signal fast and with ease, and the method using the apparatus.The object is attained by the method for obtaining a multiple harmonic signal comprises, suppressing a different parity optical signal having parity different from fundamental optical signals; suppressing residual optical signals using an optical filter after suppressing the different parity optical signal; and obtaining the frequency difference component using the fundamental optical signals, and the device realizing the method.
摘要翻译：本发明的目的是提供一种能够快速且容易地获得倍增谐波信号的装置，以及使用该装置的方法。该目的是通过用于获得多重谐波信号的方法来实现的，包括：抑制具有与基本光信号不同的奇偶校验的不同奇偶校验光信号; 在抑制不同奇偶校验光信号之后，使用滤光器抑制残留光信号; 并使用基本光信号获得频差分量，以及实现该方法的装置。

33. 发明授权

US08170422B2 Frequency shift keying demodulator 有权
标题翻译：频移键控解调器
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）。

34. 发明授权

US07555223B2 UWB signal generator using optical FSK modulator 失效
标题翻译： UWB信号发生器采用光纤FSK调制器
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。

35. 发明授权

US07526209B2 Optical frequency shift keying modulator 有权
标题翻译：光频移键控调制器
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。

36. 发明申请

US20080304827A1 Frequency Shift Keying Demodulator 有权
标题翻译：频移键控解调器
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）。

37. 发明授权

US07236661B2 Tunable dispersion compensation apparatus 失效
标题翻译：可调色散补偿装置
公开(公告)号：US07236661B2
公开(公告)日：2007-06-26
申请号：US11091765
申请日：2005-03-29
申请人： Tetsuya Kawanishi , Masayuki Izutsu , Sze Yun Set , Mark Kenneth Jablonski , Yuuichi Tanaka
发明人： Tetsuya Kawanishi , Masayuki Izutsu , Sze Yun Set , Mark Kenneth Jablonski , Yuuichi Tanaka
IPC分类号： G02B6/26 , H04B10/00
CPC分类号： G02B6/2932 , G02B6/29322 , G02B6/29394 , G02B6/29395 , G02B6/29398 , H04B10/25133
摘要： This invention is a tunable dispersion compensation apparatus that suppresses the effects of the transmission channel dispersion which impedes transmission when optical signals used in high-speed communications are transmitted across long distances among various points. It is an apparatus that performs dispersion compensation upon received optical signals based on information that accompanies the received optical signals, or an apparatus that performs dispersion compensation in advance upon optical signals to be sent based on information related to the destination of the optical signals to be sent, including: an input block and output block for optical signals, with a dispersion element that has wavelength dispersion characteristics and a wavelength shifter that is able to adjust the amount of shift depending on the input optical signal provided in a circulating light path upon the light path from the input block to the output block, and further including a constitution whereby the input optical signal circulates around a circulating light path containing the dispersion element and wavelength shifter a stipulated number of times before reaching the output block, and a constitution whereby the number of times the light circulates is determined based on the information and input to the wavelength shifter.
摘要翻译：本发明是一种可调谐色散补偿装置，其抑制在高速通信中使用的光信号在各点之间长距离地传输时阻碍传输的传输信道色散的影响。根据接收到的光信号的信息，对接收到的光信号进行色散补偿的装置，或者根据与光信号的目的地有关的信息，预先对要发送的光信号进行色散补偿的装置发送，包括：用于光信号的输入块和输出块，具有波长色散特性的色散元件和能够根据在循环光路中提供的输入光信号调整偏移量的波长移位器从输入块到输出块的光路，还包括输入光信号在到达输出块之前在包含色散元件和波长移位器的循环光路周围循环规定次数的结构，基于光线循环的次数确定信息和输入到波长移位器。

38. 发明授权

US06791733B2 Resonance type optical modulator using symmetric or asymmetric electrode 失效
标题翻译：谐振型光调制器采用对称或不对称电极
公开(公告)号：US06791733B2
公开(公告)日：2004-09-14
申请号：US10092628
申请日：2002-03-08
申请人： Tetsuya Kawanishi , Masayuki Izutsu , Kenichi Kubodera
发明人： Tetsuya Kawanishi , Masayuki Izutsu , Kenichi Kubodera
IPC分类号： G02F103
CPC分类号： G02F1/2255
摘要： A resonance type optical modulator includes an optical path having electro-optical effect characteristics, a modulation electrode formed along the optical path for applying an electric field to the optical path, a common electrode formed in opposition to the modulation electrode, a feeding line that is connected to the modulation electrode and stubs connected to the feeding line, wherein the feeding line, stubs and common electrode are provided on one side of a region that is divided by the modulation electrode. A specific example is a resonance type optical modulator using a symmetric or an asymmetric electrode, that includes an optical path having electro-optical effect characteristics, a first stub (an open stub) (an open-ended asymmetric coplanar waveguide) or a short stub (a short-ended asymmetric coplanar waveguide), a second stub (an open or short stub) connected to the first stub, a feeding line connected to the first and second stubs and a common electrode, wherein the first and second stubs are formed along a single optical path to comprise a modulation electrode for applying an electric field to the optical path. As a result, the modulator has a configuration easy to fabricate without damaging the effective modulation field strength applied to the optical path, making it possible to realize high modulation efficiency with a low level of electric power.
摘要翻译：共振型光调制器包括具有电光效应特性的光路，沿着用于向光路施加电场的光路形成的调制电极，与调制电极相对形成的公共电极，连接到调制电极和连接到馈电线的短截线，其中馈电线，短截线和公共电极设置在由调制电极分割的区域的一侧上。一个具体实例是使用对称或不对称电极的共振型光学调制器，其包括具有电光效应特性的光路，第一短截线（开口短截线）（开口端不对称共面波导）或短截线（短端不对称共面波导），连接到第一短截线的第二短截线（开口或短截线），连接到第一和第二短截线的馈电线和公共电极，其中第一和第二短截线沿着包括用于向光路施加电场的调制电极的单个光路。结果，调制器具有易于制造而不损害施加到光路的有效调制场强的构造，使得可以以低电平实现高调制效率。

39. 发明授权

US07421209B2 Optical wavelength multiplexing FSK modulation method 有权
标题翻译：光波长复用FSK调制方法
公开(公告)号：US07421209B2
公开(公告)日：2008-09-02
申请号：US11056395
申请日：2005-02-14
申请人： Tetsuya Kawanishi , Masayuki Izutsu
发明人： Tetsuya Kawanishi , Masayuki Izutsu
IPC分类号： H04B10/04
CPC分类号： H04L27/10 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/5563
摘要： An optical wavelength multiplexing frequency shift keying modulation system. The system includes an optical wavelength multiplexing signal acquisition unit for outputting an optical wavelength multiplexing signal. A n optical frequency shift keying modulation unit acquires an optical frequency shift keying signal, including an upper side band signal and a lower side band signal, by performing frequency modulation to the optical wavelength multiplexing signal output from the optical wavelength multiplexing signal acquisition unit. An optical frequency shift keying signal separation unit separates the optical frequency shift keying signal output from the optical frequency shift keying modulation unit into an upper side band signal and a lower side band signal.
摘要翻译：一种光波长复用频移键控调制方式。该系统包括用于输出光波长复用信号的光波长复用信号获取单元。通过对从光波长多路复用信号获取单元输出的光波长复用信号进行频率调制，n个光频移键控调制单元获取包括上边带信号和下边带信号的光频移键控信号。光频移键控信号分离单元将从光频移键控调制单元输出的光频移键控信号分离为上边带信号和下边带信号。

40. 发明授权

US07106497B2 Low-noise optical frequency converter 有权
标题翻译：低噪声光频变频器
公开(公告)号：US07106497B2
公开(公告)日：2006-09-12
申请号：US10627782
申请日：2003-07-28
申请人： Tetsuya Kawanishi , Masayuki Izutsu
发明人： Tetsuya Kawanishi , Masayuki Izutsu
IPC分类号： G02F2/02
CPC分类号： G02F2/02
摘要： A low-noise optical frequency converter uses a predetermined microwave electric signal to modulate an input light wave and output a light wave that includes a first-order upper-sideband or lower-sideband and a third-order lower-sideband or upper-sideband. The frequency converter modulates a light wave identical to the input light wave with a signal having a frequency that is three times that of the microwave signal, to form a first light wave having a first-order lower-sideband or upper-sideband. The first light wave is mixed with a second light wave having a first-order upper-sideband or lower-sideband and a third-order lower-sideband or upper-sideband, with a phase of the third-order lower-sideband or upper-sideband reversed to a phase of the first light wave, thereby suppressing third-order sidebands.
摘要翻译：低噪声光频变换器使用预定的微波电信号来调制输入光波并输出包括一阶上边带或下边带和三阶下边带或上边带的光波。变频器利用具有三倍于微波信号的频率的信号来调制与输入光波相同的光波，以形成具有一级下边带或上边带的第一光波。第一光波与具有一阶上边带或下边带和三阶下边带或上边带的第二光波混合，具有三阶下边带或上边带的相位，边带反转到第一光波的相位，从而抑制三阶边带。

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