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

IPC分类号： G02F1/035 ,  G02F1/01 ,  G02F1/225 ,  G02F2/00

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。

公开(公告)号：US06788832B2

公开(公告)日：2004-09-07

申请号：US10329537

申请日：2002-12-27

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Satoshi Oikawa ,  Kaoru Higuma

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Satoshi Oikawa ,  Kaoru Higuma

IPC分类号： G02F1295

CPC分类号： H04B10/50575 ,  G02F1/0123 ,  G02F1/0356 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/307 ,  H04B10/505

摘要： An optical modulation apparatus includes an optical signal input section, an optical signal propagation path, an optical modulator that modulates the phase of optical signals in at least two of a plurality of optical paths, and a wavelength selective filter that selectively reflects and transmits. Optical signals input via the input section are divided into a plurality of optical paths at a branching point and phase modulated by the phase modulator, that divides the optical path into a plurality of optical paths. Light transmitted by the filter is output via the output section, while light reflected by the filter travels back along the optical path and is again phase modulated by the phase modulator combined at the branching point and output from the input section as an intensity modulated optical signal.

摘要翻译： 光调制装置包括：光信号输入部，光信号传播路径，调制多个光路中的至少两个的光信号的相位的光调制器;以及选择性地反射和发送的波长选择滤波器。 通过输入部分输入的光信号在分支点被分成多个光路，并由相位调制器相位调制，将光路分成多个光路。 由滤波器发射的光通过输出部分输出，而由滤光器反射的光沿着光路返回，并且由在分支点处组合并由输入部分输出的相位调制器再次相位调制，作为强度调制光信号 。

公开(公告)号：US08351047B2

公开(公告)日：2013-01-08

申请号：US12921235

申请日：2008-03-07

申请人： Tetsuya Kawanishi ,  Shinya Nakajima ,  Satoshi Shinada

发明人： Tetsuya Kawanishi ,  Shinya Nakajima ,  Satoshi Shinada

IPC分类号： G01B9/02

CPC分类号： G02F1/225 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2203/69

摘要： ProblemAn object is to provide a method for evaluating characteristics of individual Mach-Zehnder (MZ) interferometers in an optical modulator which includes a plurality of MZ interferometers,Means for Solving ProblemsThe method comprises a step for adjusting a bias voltage of the MZ interferometer, a step for eliminating zero-order components, a step for measuring an output intensity and a step for evaluating characteristics. An optical modulator (1) includes the first MZ interferometer (2) and the second MZ interferometer (3). The first MZ interferometer (2) includes wave-branching section (5). Two arms (6,7), wave coupling section (8) and electrodes which is not shown in figures.

摘要翻译： 问题目的是提供一种用于评估包括多个MZ干涉仪的光学调制器中的各个马赫 - 曾德（MZ）干涉仪的特性的方法，该方法包括用于调整MZ干涉仪偏置电压的步骤 消除零级分量的步骤，测量输出强度的步骤和用于评估特性的步骤。 光调制器（1）包括第一MZ干涉仪（2）和第二MZ干涉仪（3）。 第一MZ干涉仪（2）包括波分支部分（5）。 两个臂（6,7），波形耦合部分（8）和电极，未示于图中。

公开(公告)号：US07787121B2

公开(公告)日：2010-08-31

申请号：US12175033

申请日：2008-07-17

申请人： Kazuhiro Tsujita ,  Hiroshi Sunagawa ,  Katsuya Kikuchi ,  Tetsuya Kawanishi

发明人： Kazuhiro Tsujita ,  Hiroshi Sunagawa ,  Katsuya Kikuchi ,  Tetsuya Kawanishi

IPC分类号： G01N21/25

CPC分类号： G01J3/51 ,  A61B1/00163 ,  A61B1/00186 ,  A61B1/043 ,  A61B1/063 ,  A61B1/0638 ,  A61B1/0669 ,  G01J3/36 ,  G01J3/513 ,  H04N5/2256 ,  H04N5/33 ,  H04N9/045 ,  H04N9/07 ,  H04N9/09 ,  H04N2209/043 ,  H04N2209/044 ,  H04N2209/045

摘要： An imaging apparatus includes a light source unit that selectively outputs white light and light in a different wavelength band to an observation target, an imaging unit including an imaging device, and a spectral image formation circuit that generates a spectral image signal for a specified wavelength by an operation using an image signal based on an output from the imaging unit and predetermined matrix data. The imaging unit selectively obtains an image of the observation target for each of first, second and third light components in a visible light region and an image for each of at least fourth and fifth light components in a near-infrared region. Further, the imaging unit includes first spectral devices that make only the first and fourth light components enter first pixels of the imaging device and second spectral devices that make only the second and fifth light components enter second pixels thereof.

摘要翻译： 一种成像设备包括：光源单元，其选择性地将白光和不同波长带的光输出到观察对象;成像单元，包括成像装置;以及光谱图像形成电路，其通过以下方式产生特定波长的光谱图像信号 使用基于来自成像单元的输出的图像信号和预定矩阵数据的操作。 成像单元在近红外区域中选择性地获得可见光区域中的第一，第二和第三光分量中的每一个的观察目标图像和用于至少第四和第五光分量中的每一个的图像。 此外，成像单元包括仅使第一和第四光分量进入成像装置的第一像素的第一光谱装置和仅使第二和第五光分量进入其第二像素的第二光谱装置。

公开(公告)号：US20080267565A1

公开(公告)日：2008-10-30

申请号：US11628572

申请日：2005-06-01

申请人： Jianxiao Chen ,  Paul Kit Lai Yu ,  Tetsuya Kawanishi ,  Kaoru Higuma

发明人： Jianxiao Chen ,  Paul Kit Lai Yu ,  Tetsuya Kawanishi ,  Kaoru Higuma

IPC分类号： G02B6/42

CPC分类号： G02F1/035 ,  G02F1/3136 ,  G02F1/3137 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2201/34 ,  G02F2203/50

摘要： The invention provides tunable delay or resonator devices in an electro optical substrate. Signals in at least one waveguide in the electro optical substrate pass through Y-junction reflectors which direct signals from one branch of the waveguide back into another branch of the waveguide. A coupled delay or resonator approximated loop is presented in an embodiment of the invention with opposing Y-junction reflectors. In other embodiments of the invention, a delay ladder is provided with selectable levels of delay from multiple outputs.

摘要翻译： 本发明在电光学衬底中提供可调延迟或谐振器装置。 在电光学衬底中的至少一个波导中的信号通过Y形结反射器，其将信号从波导的一个分支引导回到波导的另一分支。 耦合延迟或谐振器近似环在本发明的具有相对的Y结反射器的实施例中呈现。 在本发明的其它实施例中，向多个输出端提供延迟梯形图，其具有可选择的延迟级别。

公开(公告)号：US20080159754A1

公开(公告)日：2008-07-03

申请号：US11571281

申请日：2005-06-29

申请人： Tetsuya Kawanishi ,  Hiroshi Harada ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Hiroshi Harada ,  Masayuki Izutsu

IPC分类号： H04B10/04

CPC分类号： H03D9/00 ,  H04B10/505 ,  H04B10/5563

摘要： The object of the present invention is to provide a modulated optical signal generator utilizing the mechanism of a multiply optical modulator, and a modulated signal generator capable of outputting millimeter waves and the like utilizing the modulated optical signal generator.The above-mentioned object is solved by a modulated optical signal generator (1) provided with an optical modulator (2), a first optical filter (3), and a second optical filter (4), wherein a frequency of a multiplying optical modulation outputted from the second optical filter (4) is controlled by controlling the frequency of the modulating signal inputted to the optical modulator (2).

摘要翻译： 本发明的目的是提供一种利用多光调制器机构的调制光信号发生器，以及利用调制光信号发生器输出毫米波等的调制信号发生器。 上述目的通过具有光调制器（2），第一滤光器（3）和第二滤光器（4）的调制光信号发生器（1）来解决，其中乘法光调制 通过控制输入到光调制器（2）的调制信号的频率来控制从第二滤光器（4）输出的输出。

公开(公告)号：US07245787B2

公开(公告)日：2007-07-17

申请号：US11078695

申请日：2005-03-14

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu

IPC分类号： G02F1/01 ,  G02F1/225

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： 提供一种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 - 策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。

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。

公开(公告)号：US20050220385A1

公开(公告)日：2005-10-06

申请号：US11085609

申请日：2005-03-22

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

IPC分类号： G02F1/035 ,  G02F1/01 ,  G02F1/21 ,  G02F1/225 ,  G02F1/313

CPC分类号： G02F1/3136 ,  G02F1/0123 ,  G02F1/035 ,  G02F1/225 ,  G02F2001/212

摘要： An optical SSB modulator capable of appropriately adjusting a phase difference of light in the MZ waveguides and automatically adjusting a voltage impressed to the bias adjustment electrodes is provided. The above-mentioned object is achieved by an optical SSB modulator (1) provided with a first sub Mach-Zehnder waveguide (MZA) (2), a second sub Mach-Zehnder waveguide (MZB) (3), a main Mach-Zehnder waveguide (MZC) (4), a first bias adjustment electrode (DCA electrode) (5), a second bias adjustment electrode (DCB electrode) (6), a first modulation electrode (RFA electrode) (7), a second modulation electrode (RFB electrode) (8) and a third bias adjustment electrode (DCC electrode) (9), wherein either one of or both of output portions (10, 11) of the MZA and the MZB have an X-branching form, and specifically having one of light paths of the X-branching connected to a photodetector.

摘要翻译： 提供一种能够适当地调整MZ波导中的光的相位差并自动调节施加到偏置调节电极的电压的光学SSB调制器。 上述目的通过一种光学SSB调制器（1）来实现，所述光学SSB调制器（1）设置有第一子马赫 - 曾德尔波导（MZ）和第二子马赫 - 曾德尔波导（MZ＆lt; SUB＆amp; （3），主马赫 - 曾德尔波导（MZ）C（4），第一偏置调节电极（DCA电极）（ 5），第二偏置调整电极（DCB电极）（6），第一调制电极（RFA电极）（7），第二调制电极（RF B电极）（8）和第三偏置调整电极（DC电极）（9），其中，输出部分（10,11）中的任一个或两个 MZA A和MZ B B具有X分支形式，并且具体地将X分支的光路中的一个连接到光电检测器。

公开(公告)号：US20050180761A1

公开(公告)日：2005-08-18

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： G02F1/035 ,  H04B10/516 ,  H04B10/54 ,  H04B10/548 ,  H04B10/61 ,  H04J14/00 ,  H04J14/02 ,  H04L27/10 ,  H04B10/04

CPC分类号： H04L27/10 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5563

摘要： The invention has as its object to provide an optical wavelength multiplexing FSK modulation system obtained by combining optical FSK and optical WDM and a method of obtaining an optical wavelength multiplexing signal and an optical FSK modulated signal by using such a system. An optical wavelength multiplexing frequency shift keying modulation system includes: an optical wavelength multiplexing signal acquisition unit for outputting an optical wavelength multiplexing signal; an optical frequency shift keying modulation unit for performing frequency modulation to the optical wavelength multiplexing signal output from the optical wavelength multiplexing signal acquisition unit to acquire an optical frequency shift keying signal including an upper side band signal and a lower side band signal; an optical wavelength multiplexing signal demodulation unit for demodulating the optical frequency shift keying signal output from the optical frequency shift keying modulation unit into the optical wavelength multiplexing signal, and an optical frequency shift keying signal separation unit for separating 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. The optical wavelength multiplexing signal output from the optical wavelength multiplexing signal acquisition unit is subjected to frequency modulation by the optical frequency shift keying modulation unit to obtain an optical frequency shift keying signal, the optical wavelength multiplexing signal demodulation unit demodulates the optical frequency shift keying signal into an optical wavelength multiplexing signal, and the optical frequency shift keying signal separation unit separates the optical frequency shift keying signal into an upper side band signal and a lower side band signal to obtain an optical FSK modulated signal.

摘要翻译： 本发明的目的是提供一种通过组合光学FSK和光学WDM获得的光学波长复用FSK调制系统，以及通过使用这种系统获得光学波长复用信号和光学FSK调制信号的方法。 光波分复用频移键控调制方式包括：光波长多路复用信号获取单元，用于输出光波长复用信号; 光频移键控调制单元，用于对从光波长复用信号获取单元输出的光波长复用信号进行频率调制，以获取包括上边带信号和下边带信号的光频移键控信号; 光波分复用信号解调单元，用于将从光频移键控调制单元输出的光频移键控信号解调成光波分复用信号;以及光频移键控信号分离单元，用于分离从 光频移键控调制单元变为上边带信号和下边带信号。 从光波分复用信号获取单元输出的光波长复用信号由光频移键控调制单元进行频调，得到光频移键控信号，光波分复用信号解调单元解调光频移键控信号 光频移键控信号分离单元将光频移键控信号分离为上边带信号和下边带信号以获得光FSK调制信号。