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公开(公告)号：US20050226554A1
公开(公告)日：2005-10-13
申请号：US11091765
申请日：2005-03-29
申请人： Tetsuya Kawanishi , Masayuki Izutsu , Sze Set , Mark Jablonski , Yuuichi Tanaka
发明人： Tetsuya Kawanishi , Masayuki Izutsu , Sze Set , Mark Jablonski , Yuuichi Tanaka
IPC分类号： G02F1/01 , G02B6/26 , G02B6/34 , G02F2/02 , H04B10/2507 , H04B10/2519 , H04B10/524
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。
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公开(公告)号：US07236661B2
公开(公告)日：2007-06-26
申请号：US11091765
申请日：2005-03-29
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。
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公开(公告)号：US07957652B2
公开(公告)日：2011-06-07
申请号：US12064597
申请日：2006-08-23
IPC分类号： H04B10/04
CPC分类号： H04B10/5165 , G02F1/225 , H04B10/505 , H04B10/5563
摘要： It is an object of the present invention to provide an optical modulator which is capable of adjusting optical intensity of optical signals which contains non-desired components so that the intensity of the components become at a similar level, whereby the optical modulator is capable of effectively suppressing the non-desired components when the optical signals are combined.
摘要翻译： 本发明的目的是提供一种光调制器，其能够调节包含非期望分量的光信号的光强度，使得各部件的强度变成相似的水平，从而光调制器能够有效地 当光信号被组合时，抑制不期望的分量。
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公开(公告)号：US20090103163A1
公开(公告)日：2009-04-23
申请号：US12063436
申请日：2006-08-09
IPC分类号： G02F1/01
CPC分类号： G02F1/0311 , G02F2/02 , G02F2201/17 , G02F2201/307
摘要： In order to provide a reciprocating optical modulation system capable of obtaining a broad bandwidth, a reciprocating optical modulation system (1) of the present invention is basically provided with an optical modulator (2) modulating an output light by controlling one of an intensity, a phase and a frequency of an input light; a first fiber grating (3) transmitting a light of a predetermined frequency domain among lights inputted to and outputted from the optical modulator while reflecting lights of other frequencies; a second fiber grating (4) transmitting a light of a predetermined frequency domain among lights inputted to and outputted from the optical modulator while reflecting lights of other frequencies; and a signal source (5) generating a modulating signal to be inputted to the optical modulator (2).
摘要翻译： 为了提供能够获得宽带宽的往复式光调制系统，本发明的往复式光调制系统（1）基本上设置有光调制器（2），通过控制强度， 输入光的相位和频率; 第一光纤光栅（3），其在反射其他频率的光的同时，在从所述光调制器输入和输出的光之间传输预定频域的光; 第二光纤光栅（4），其在反射其他频率的光的同时，在从所述光调制器输入和输出的光之间传输预定频域的光; 以及产生要输入到光调制器（2）的调制信号的信号源（5）。
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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。
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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。
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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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8.发明授权公开(公告)号：US07084649B2
公开(公告)日：2006-08-01
申请号：US10721408
申请日：2003-11-26
IPC分类号： G01R31/308 , G01R31/28
CPC分类号： G01R31/311
摘要： A method and apparatus are provided that make it possible to speedily measure, and obtain images of, the three-dimensional distribution of electric fields in integrated circuits, using electro-optic sampling. The sampling is performed using a plurality of electric field sensors, each comprising an electro-optic crystal layer, a light-reflecting layer that is in close contact with the electro-optic crystal layer, and a separation layer that is in close contact with the reflection layer, separating the reflection layer from the object to be measured.
摘要翻译： 提供了一种方法和装置，其可以使用电光采样来快速测量和获得集成电路中的电场的三维分布的图像。 使用多个电场传感器进行采样，每个电场传感器包括电光晶体层，与电光晶层紧密接触的光反射层和与该电光晶体层紧密接触的分离层 反射层，将反射层与被测量物体分开。
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公开(公告)号：US20050238366A1
公开(公告)日：2005-10-27
申请号：US11103494
申请日：2005-04-12
申请人： Tetsuya Kawanishi , Masayuki Izutsu
发明人： Tetsuya Kawanishi , Masayuki Izutsu
CPC分类号： H04B10/505 , H04B10/506
摘要： An apparatus is provided for using modulation signals to optically modulate lightwaves of multiple frequencies, using a single optical modulator. A multiple-wavelength optical modulation apparatus in which with respect to a natural number n that is not higher than a number N of modulation signals that is not lower than a number of input lightwaves, fn is input light component of channel n, Fn is modulation frequency, An is a lower sideband order and Bn is an upper sideband order corresponding to sideband channels generated by modulation, the apparatus comprises: an input filter, an optical modulator and an output filter on a single optical path; A lightwave input through an input filter is reflected between the input filter and an output filter, being modulated during each round trip, and is output via the output or input filter when the light has reached a frequency determined by the output or input filter. The time required for each light component of channel n to make a round trip is an integer multiple of one period of each modulation signal having a frequency Fn (=1/Fn). A light component travelling in one direction is reverse phase modulated when the round-trip time is an odd multiple of one period (=1/Fn), and a light component travelling in both directions is in phase modulated when the time required for the light component to travel both ways is an even multiple of one period (=1/Fn).
摘要翻译： 提供一种使用单个光学调制器来使用调制信号来光学地调制多个频率的光波的装置。 一种多波长光调制装置，其中对于不高于输入光波数的调制信号的数目N的自然数n，fn是通道n的输入光分量，Fn是调制 A为低边带顺序，Bn为对应于通过调制生成的边带通道的上边带次序，该装置包括：单个光路上的输入滤波器，光调制器和输出滤波器; 通过输入滤波器输入的光波被反映在输入滤波器和输出滤波器之间，在每次往返期间被调制，并且当光已经达到由输出或输入滤波器确定的频率时通过输出滤波器输出。 通道n的每个光分量进行往返所需的时间是具有频率Fn（= 1 / F N n N）的每个调制信号的一个周期的整数倍。 当往返时间是一个周期（= 1 / F
N）的奇数倍时，在一个方向上行进的光分量被反相调制，并且在两个方向上行进的光分量是同相的 当光分量行进两方面所需的时间是一个周期（= 1 / F）的偶数倍时被调制。 -
10.发明申请Bias adjustment method for optical SSB modulator or optical FSK modulator 有权光学SSB调制器或光学FSK调制器的偏置调整方法公开(公告)号：US20050213862A1
公开(公告)日：2005-09-29
申请号：US11078695
申请日：2005-03-14
申请人： Tetsuya Kawanishi , Masayuki Izutsu
发明人： Tetsuya Kawanishi , Masayuki Izutsu
CPC分类号： H04B10/50575 , G02F1/0123 , G02F1/225 , H04B10/505 , H04B10/5053 , H04B10/50572 , H04B10/50577
摘要： A method of appropriately adjusting a bias signal of an optical modulator is provided. For an optical modulator provided with a first sub Mach-Zehnder waveguide, a second sub Mach-Zehnder waveguide and a main Mach-Zehnder waveguide, a predetermined signal is supplied to the main Mach-Zehnder waveguide, and bias signals supplied to the first and second Mach-Zehnder waveguides are adjusted so as to lower an amplitude of an output light of the main Mach-Zehnder waveguide.
摘要翻译： 提供了适当调整光调制器的偏置信号的方法。 对于具有第一子马赫 - 曾德尔波导，第二次马赫 - 曾德尔波导和主马赫 - 曾德尔波导的光学调制器，向主马赫 - 策德尔波导提供预定信号，并将偏置信号提供给第一和 调整第二马赫 - 策德尔波导，以降低主马赫 - 策德尔波导的输出光的振幅。
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