公开(公告)号：US06724957B2

公开(公告)日：2004-04-20

申请号：US10213075

申请日：2002-08-07

申请人： Takashi Saida ,  Takayuki Mizuno ,  Akira Himeno ,  Katsunari Okamoto ,  Koichi Takiguchi ,  Manabu Oguma

发明人： Takashi Saida ,  Takayuki Mizuno ,  Akira Himeno ,  Katsunari Okamoto ,  Koichi Takiguchi ,  Manabu Oguma

IPC分类号： G02B626

CPC分类号： G02B6/29355 ,  G02B6/105 ,  G02B6/2938 ,  G02B6/29386 ,  G02B2006/12135 ,  G02B2006/12159

摘要： It is an object of the present invention to provide an optical filter which allows parameters to be easily adjusted, which allows birefringence and temperature dependence to be easily compensated for, and which is essentially free from dispersion. The optical filter includes an optical coupler that splits light into two beams, optical couplers connected to outputs of the optical coupler, a first group of two optical waveguide delay lines connected to the coupler, a second group of two optical waveguide delay lines connected to the coupler, an optical coupler that combines lights from the first group of the lines, an optical coupler that combines lights from the second group of the lines, and a multimode interference optical coupler that combines lights from the couplers together.

摘要翻译： 本发明的目的是提供一种允许容易地调整参数的光学滤波器，其允许容易地补偿双折射和温度依赖性，并且基本上没有分散。 光学滤波器包括将光分成两个光束的光耦合器，连接到光耦合器的输出的光耦合器，连接到耦合器的第一组两个光波导延迟线，连接到该耦合器的两个光波导延迟线的第二组 耦合器，组合来自第一组线路的光的光耦合器，组合来自第二组线路的光的光耦合器和将耦合器的光组合在一起的多模干涉光耦合器。

公开(公告)号：US07155086B2

公开(公告)日：2006-12-26

申请号：US09802168

申请日：2001-03-08

申请人： Takashi Saida ,  Katsunari Okamoto ,  Koichi Takiguchi

发明人： Takashi Saida ,  Katsunari Okamoto ,  Koichi Takiguchi

IPC分类号： G02B6/26 ,  G02F7/00 ,  H04J14/08

CPC分类号： H04Q11/0003 ,  G02F1/313 ,  G02F1/3136 ,  G02F7/00 ,  G02F2001/212 ,  G02F2001/217 ,  H04Q11/0066 ,  H04Q2011/0041

摘要： In the disclosed optical signal processing device, the digital-to-analog conversion of the input optical signals is realized in an optical region, without converting the input optical signals into electric signals for the purpose of signal processing, by splitting input optical signals into plural sets, delaying the split optical signals for mutually different delay amounts while adjusting amplitudes of these optical signals, combining these optical signals, and gating these optical signals on a time axis. It is also possible to realize the processing of the optical signals that are multiplexed on a time axis such as interchanges of time-slots similarly.

摘要翻译： 在所公开的光信号处理装置中，通过将输入光信号分割成多个，在光区域中实现输入光信号的数模转换，而不将输入光信号转换为电信号用于信号处理 设置，在调整这些光信号的幅度，组合这些光信号以及在时间轴上选通这些光信号的同时延迟分开的光信号相互不同的延迟量。 也可以类似地实现在诸如时隙的交换的时间轴上多路复用的光信号的处理。

公开(公告)号：US5943452A

公开(公告)日：1999-08-24

申请号：US906145

申请日：1997-08-05

申请人： Akira Himeno ,  Katsunari Okamoto ,  Hiroshi Takahashi

发明人： Akira Himeno ,  Katsunari Okamoto ,  Hiroshi Takahashi

IPC分类号： G02B6/34 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/12011

摘要： An arrayed waveguide grating including an input waveguide or input waveguides, an input side slab waveguide lens, arrayed waveguides, an output side slab waveguide lens, and an output waveguide or output waveguides, wherein an optical length of the arrayed waveguides monotonically increases or decreases by a constant value between adjacent waveguides; the arrayed waveguides include an input side waveguide block, an intermediate waveguide block, and an output side waveguide block; the intermediate waveguide block includes at least one fan-formed waveguide block, the fan-formed waveguide block is coaxial, equal in vertical angle, and monotonically increases or decreases by a constant value in radius between adjacent waveguides; and the input side waveguide block and the output side waveguide block are line symmetrical about a bisector of the vertical angle of the intermediate waveguide block.

摘要翻译： 包括输入波导或输入波导的阵列波导光栅，输入侧平板波导透镜，阵列波导，输出侧平板波导透镜以及输出波导或输出波导，其中阵列波导的光学长度单调增加或减小 相邻波导之间的恒定值; 阵列波导包括输入侧波导块，中间波导块和输出侧波导块; 所述中间波导块包括至少一个扇形波导块，所述扇形波导块是同轴的，垂直角相等，并且在相邻波导之间的半径上恒定地单调增加或减小; 并且输入侧波导块和输出侧波导块关于中间波导块的垂直角的二等分线对称。

公开(公告)号：US20050169630A1

公开(公告)日：2005-08-04

申请号：US11087814

申请日：2005-03-24

申请人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

发明人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

IPC分类号： G02B6/34 ,  H04B10/2513 ,  H04J14/00

CPC分类号： G02B6/29394 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02B6/29398 ,  H04B10/25133 ,  H04B2210/258

摘要： The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of DSF or NZ-DSF at 1.55 μm band, and to compensate for the dispersion of various fiber transmission lines having various dispersion values and variation of dispersion value caused by the temperature change or the like. WDM signals distorted by the dispersion slope of the fiber are introduced into an input waveguide, and are demultiplexed by a wavelength demultiplexer into each wavelength component, and pass through lattice-form optical circuits, transversal-form optical circuits, or the combination of these circuits. The dispersion slope of the signals is compensated for by these circuits. The recovered signals are multiplexed by a wavelength multiplexer, and the multiplexed light is outputted at an output waveguide. Arrayed-waveguide gratings can be used as the wavelength demultiplexer and multiplexer. Also, cascaded configuration of Mach-Zehnder interferometers, bulk-type optical filters, or fiber-type (or waveguide-type) gratings in series can also be used as the wavelength demultiplexer and multiplexer.

公开(公告)号：US06912362B1

公开(公告)日：2005-06-28

申请号：US09688933

申请日：2000-10-17

申请人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

发明人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

IPC分类号： G02B6/34 ,  H04B10/2513 ,  H04B10/00

CPC分类号： G02B6/29394 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02B6/29398 ,  H04B10/25133 ,  H04B2210/258

摘要： The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of DSF or NZ-DSF at 1.55 μm band, and to compensate for the dispersion of various fiber transmission lines having various dispersion values and variation of dispersion value caused by the temperature change or the like. WDM signals distorted by the dispersion slope of the fiber are introduced into an input waveguide, and are demultiplexed by a wavelength demultiplexer into each wavelength component, and pass through lattice-form optical circuits, transversal-form optical circuits, or the combination of these circuits. The dispersion slope of the signals is compensated for by these circuits. The recovered signals are multiplexed by a wavelength multiplexer, and the multiplexed light is outputted at an output waveguide. Arrayed-waveguide gratings can be used as the wavelength demultiplexer and multiplexer. Also, cascaded configuration of Mach-Zehnder interferometers, bulk-type optical filters, or fiber-type (or waveguide-type) gratings in series can also be used as the wavelength demultiplexer and multiplexer.

摘要翻译： 本发明的目的是提供一种紧凑的色散斜率均衡器，通过该均衡器可以通过在1.55mum波段的DSF或NZ-DSF的色散斜率同时恢复WDM信号的失真波形，并补偿各种光纤的色散 具有各种色散值的传输线和由温度变化等引起的色散值的变化。 通过光纤的色散斜率失真的WDM信号被引入到输入波导中，并且被波长解复用器解复用成每个波长分量，并通过格子形光路，横向光电路或这些电路的组合 。 由这些电路补偿信号的色散斜率。 恢复的信号由波长多路复用器复用，并且多路复用的光在输出波导处输出。 阵列波导光栅可以用作波长解复用器和多路复用器。 此外，还可以使用串联的马赫 - 曾德干涉仪，体式光学滤波器或光纤型（或波导型）光栅的级联配置作为波长解复用器和多路复用器。

公开(公告)号：US07020398B2

公开(公告)日：2006-03-28

申请号：US11087814

申请日：2005-03-24

申请人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

发明人： Koichi Takiguchi ,  Katsunari Okamoto ,  Takashi Goh

IPC分类号： H04B10/00

CPC分类号： G02B6/29394 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02B6/29398 ,  H04B10/25133 ,  H04B2210/258

摘要： The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of DSF or NZ-DSF at 1.55 μm band, and to compensate for the dispersion of various fiber transmission lines having various dispersion values and variation of dispersion value caused by the temperature change or the like. WDM signals distorted by the dispersion slope of the fiber are introduced into an input waveguide, and are demultiplexed by a wavelength demultiplexer into each wavelength component, and pass through lattice-form optical circuits, transversal-form optical circuits, or the combination of these circuits. The dispersion slope of the signals is compensated for by these circuits. The recovered signals are multiplexed by a wavelength multiplexer, and the multiplexed light is outputted at an output waveguide. Arrayed-waveguide gratings can be used as the wavelength demultiplexer and multiplexer. Also, cascaded configuration of Mach-Zehnder interferometers, bulk-type optical filters, or fiber-type (or waveguide-type) gratings in series can also be used as the wavelength demultiplexer and multiplexer.

摘要翻译： 本发明的目的是提供一种紧凑的色散斜率均衡器，通过该均衡器可以通过在1.55mum波段的DSF或NZ-DSF的色散斜率同时恢复WDM信号的失真波形，并补偿各种光纤的色散 具有各种色散值的传输线和由温度变化等引起的色散值的变化。 通过光纤的色散斜率失真的WDM信号被引入到输入波导中，并且被波长解复用器解复用成每个波长分量，并通过格子形光路，横向光电路或这些电路的组合 。 信号的色散斜率由这些电路补偿。 恢复的信号由波长多路复用器复用，并且复用的光在输出波导处输出。 阵列波导光栅可以用作波长解复用器和多路复用器。 此外，还可以使用串联的马赫 - 曾德干涉仪，体式光学滤波器或光纤型（或波导型）光栅的级联配置作为波长解复用器和多路复用器。

公开(公告)号：US06711313B2

公开(公告)日：2004-03-23

申请号：US09753565

申请日：2001-01-04

申请人： Koichi Takiguchi ,  Katsunari Okamoto ,  Tomohiro Shibata ,  Masao Kato ,  Takashi Goh

发明人： Koichi Takiguchi ,  Katsunari Okamoto ,  Tomohiro Shibata ,  Masao Kato ,  Takashi Goh

IPC分类号： G02B626

CPC分类号： G02B6/12021 ,  G02B6/2861 ,  H04J14/005 ,  H04J14/02

摘要： An optical CDMA encoder-decoder is constructed by combining arrayed-waveguide gratings, matrix optical switches, and delay lines, otherwise by combining arrayed-waveguide grating and variable delay lines, thus providing an encoding process that a wavelength change with respect to time in optical pulses. The light includes a wide spectrum band width inserted into a CDMA encoder/decoder and is demultiplexed by arrayed-waveguide gratings. Each wave length according to the demultiplexed spectrum component spreads out in the time region based on delay time differences produced by delay lines having differential optical lengths. Thus, in CDMA, the dependency of wavelengths on delay time can be set arbitrarily.

摘要翻译： 通过组合阵列波导光栅，矩阵光开关和延迟线，否则通过组合阵列波导光栅和可变延迟线来构造光CDMA编码器 - 解码器，从而提供编码过程，其中波长相对于时间在光学中的变化 脉冲。 该光包括插入到CDMA编码器/解码器中的宽谱带宽度，并通过阵列波导光栅解复用。 根据解复用的频谱分量的每个波长基于由具有差分光学长度的延迟线产生的延迟时间差在时间区域中扩展。 因此，在CDMA中，波长对延迟时间的依赖性可以任意设定。

公开(公告)号：US08406580B2

公开(公告)日：2013-03-26

申请号：US13192577

申请日：2011-07-28

申请人： Kazumasa Takada ,  Katsunari Okamoto

发明人： Kazumasa Takada ,  Katsunari Okamoto

IPC分类号： G02B6/12 ,  G01J3/45

CPC分类号： G01J3/4531 ,  G01J3/45 ,  G01J3/4532

摘要： A transform spectrometer measurement apparatus and method for a planar waveguide circuit (PLC). The spectrometer typically includes an input optical signal waveguide carrying an input optical signal; a plurality of couplers, each connected to the input optical signal waveguide, and each including a coupler output for carrying a coupled optical signal related to the input optical signal; and an array of interleaved, waveguide Mach-Zehnder interferometers (MZI), each having at least one input MZI waveguide, each MZI input waveguide receiving a coupled optical signal from a respective coupler output. A phase shifting circuit is applied to at least one arm of the MZIs to induce an active phase shift on the arm to thereby measure phase error in the MZIs. Light output from the MZIs is measured under intrinsic phase error conditions and after an active phase shift by the phase shifting circuit.

摘要翻译： 一种用于平面波导电路（PLC）的变换光谱仪测量装置和方法。 光谱仪通常包括承载输入光信号的输入光信号波导; 多个耦合器，各自连接到输入光信号波导，并且每个耦合器包括耦合器输出，用于承载与输入光信号相关的耦合光信号; 以及每个具有至少一个输入MZI波导的交错的波导马赫 - 策德尔干涉仪阵列（MZI），每个MZI输入波导从相应的耦合器输出接收耦合的光信号。 移相电路施加到MZI的至少一个臂，以引起臂上的有源相移，从而测量MZI中的相位误差。 来自MZI的光输出在固有相位误差条件下测量，并在相移电路进行有源相移之后测量。

公开(公告)号：US06304687B1

公开(公告)日：2001-10-16

申请号：US09171020

申请日：1998-10-14

申请人： Yasuyuki Inoue ,  Akimasa Kaneko ,  Hiroshi Takahashi ,  Fumiaki Hanawa ,  Kuninori Hattori ,  Kenji Yokoyama ,  Senichi Suzuki ,  Shin Sumida ,  Katsunari Okamoto ,  Motohaya Ishii ,  Hiroaki Yamada ,  Takashi Yoshida ,  Koichi Arishima ,  Fumihiro Ebisawa ,  Motohiro Nakahara

发明人： Yasuyuki Inoue ,  Akimasa Kaneko ,  Hiroshi Takahashi ,  Fumiaki Hanawa ,  Kuninori Hattori ,  Kenji Yokoyama ,  Senichi Suzuki ,  Shin Sumida ,  Katsunari Okamoto ,  Motohaya Ishii ,  Hiroaki Yamada ,  Takashi Yoshida ,  Koichi Arishima ,  Fumihiro Ebisawa ,  Motohiro Nakahara

IPC分类号： G02B612

CPC分类号： G02B6/12011 ,  G02B6/12014 ,  G02B6/12023 ,  G02B6/12028

摘要： In a light waveguide circuit including a plurality of waveguides having different length, a material (10) having a temperature coefficient of a refractive index including a symbol different from that of a temperature coefficient of an effective refractive index of the waveguide (4) is charged into a groove (12) formed by removing the upper clad and the core from the waveguide (4), or a groove (12) formed by removing the upper clad, the core and the lower clad from the waveguide (4). A difference in length of the removed portions between adjacent waveguides is proportional to a difference in length of the waveguides which were not removed and remained.

摘要翻译： 在包括具有不同长度的多个波导的光波导电路中，具有包括不同于波导（4）的有效折射率的温度系数的符号的折射率的温度系数的材料（10）被充电 通过从波导（4）去除上包层和芯而形成的凹槽（12），或通过从波导（4）去除上包层，芯和下包层而形成的凹槽（12）。 相邻波导之间的去除部分的长度差异与未被去除和保留的波导的长度差成比例。

公开(公告)号：US06954562B2

公开(公告)日：2005-10-11

申请号：US10755388

申请日：2004-01-13

申请人： Tatsuo Izawa ,  Katsuhiko Kurumada ,  Toshiaki Tamamura ,  Makoto Sato ,  Katsunari Okamoto

发明人： Tatsuo Izawa ,  Katsuhiko Kurumada ,  Toshiaki Tamamura ,  Makoto Sato ,  Katsunari Okamoto

IPC分类号： G02B6/12 ,  G02B6/132 ,  G02B6/136 ,  G02B6/35

CPC分类号： G02B6/3596 ,  G02B6/132 ,  G02B6/136 ,  G02B6/3512 ,  G02B6/3546 ,  G02B2006/12097

摘要： A matrix switch of an optical waveguide type which has low transmission loss variations and includes uniform grooves with a deep vertical cross section is provided. A switching part for selecting between a light path extending from an input port of a first set of optical waveguides 111-11m to an output port of the first set of optical waveguides 111-11m and a light path extending from an input port of the first set of optical waveguides 111-11m to an output port of a second set of optical waveguides 121-12n is arranged for insertion into a switching groove arranged at each of the intersections of the first set of optical waveguides 111-11m and the second set of optical waveguides 121-12n. Each of the switching grooves is arranged on an imaginary straight line connecting intersections of the first set of optical waveguides 111-11m and the second set of optical waveguides 121-12n.

摘要翻译： 提供了具有低传输损耗变化并且包括具有深垂直横截面的均匀凹槽的光波导型矩阵开关。 一种切换部件，用于在从第一组光波导11 1〜11 m的输入端口延伸到第一组光学器件的输出端口的光路之间进行选择 波导11 1〜11 3和从第一组光波导11的输入端口延伸的光路11 1〜11＆lt; m 2到第二组光波导12 1〜12 N n的输出端口被布置成插入到布置在每个交点处的切换槽中 第一组光波导11 1〜11 3和第二组光波导12 1〜12 N 2 / >。 每个开关槽布置在连接第一组光波导11 1〜11 2和第二组光波导12组合的交叉点的假想直线上 > 1 n 。