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1. 发明授权

US08406580B2 Planar lightwave fourier-transform spectrometer measurement including phase shifting for error correction 有权
标题翻译：平面光波傅里叶变换光谱仪测量包括用于纠错的相移
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。

2. 发明授权

US06278813B1 Wavelength division multi/demultiplexer 失效
标题翻译：波分复用/解复用器
公开(公告)号：US06278813B1
公开(公告)日：2001-08-21
申请号：US09366853
申请日：1999-08-04
申请人： Kazumasa Takada , Katsunari Okamoto , Hiroaki Yamada
发明人： Kazumasa Takada , Katsunari Okamoto , Hiroaki Yamada
IPC分类号： G02B628
CPC分类号： G02B6/12011 , G02B6/12016 , G02B6/12021 , G02B6/12023 , H04J14/02
摘要： A wavelength division multi/demultiplexer multi/demultiplexes incident light to emit demultiplexed lights from each of a plurality of light output ends and includes a first wavelength division multi/demultiplexing circuit having at least one light input end and a plurality of light output end; and second wavelength division multi/demultiplexing circuits of AWG type formed on a substrate, including a plurality of light input and output ends, one or two light multiplexing and demultiplexing sections, and a plurality of arrayed waveguides, and having a transmission bandwidth different from that of the first circuit, the transmission bandwidth indicating the width of a light frequency that can pass through each light input and output end, wherein the first circuit and at least one of the second circuits are optically connected together, and wherein the light output ends of the final second circuit are used as the light output ends of the wavelength division multi/demultiplexer. It is possible to greatly increase the number of channels of the wavelength division multi/demultiplexer using the AWG type wavelength division multi/demultiplexing circuit.
摘要翻译：波分多址/解复用器多路复用入射光以从多个光输出端中的每一个发射多路分解的光，并且包括具有至少一个光输入端和多个光输出端的第一波分多址/解复用电路; 以及形成在基板上的包括多个光输入和输出端，一个或两个光复用和解复用部分以及多个阵列波导的AWG型的第二波分复用/解复用电路，并且具有与之不同的传输带宽所述第一电路的传输带宽指示可以通过每个光输入和输出端的光频率的宽度，其中所述第一电路和所述第二电路中的至少一个光学连接在一起，并且其中光输出端最后的第二个电路用作波分多/多路复用器的光输出端。使用AWG型波分多址/解复用电路可以大幅增加波分多址/解复用器的信道数。

3. 发明授权

US06304687B1 Optical waveguide circuit, its manufacturing method and optical waveguide module having the optical waveguide circuit 有权
标题翻译：光波导电路，其制造方法和具有光波导电路的光波导模块
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。

4. 发明授权

US06954562B2 Matrix switch of optical waveguide type and method for manufacturing the same 失效
标题翻译：光波导型矩阵开关及其制造方法
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 。

5. 发明申请

US20050169630A1 Dispersion slope equalizer 失效
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.

6. 发明授权

US06898345B2 Optical multiplexer and method for its production 失效
标题翻译：光复用器及其生产方法
公开(公告)号：US06898345B2
公开(公告)日：2005-05-24
申请号：US10334432
申请日：2002-12-30
申请人： Katsunari Okamoto , Akimasa Kaneko
发明人： Katsunari Okamoto , Akimasa Kaneko
IPC分类号： G02B6/12 , G02B6/13 , G02B6/34 , H04J14/02 , G02B6/28
CPC分类号： G02B6/12011 , G02B6/12007 , G02B6/12016 , H04J14/02
摘要： An optical multiplexer is equipped with at least one input channel optical waveguide provided on an optical waveguide substrate, a first slab optical waveguide, a channel optical waveguide array formed from a plurality of optical waveguides having a prescribed waveguide length, a second slab optical waveguide and at least one output channel optical waveguide sequentially connected in a tandem arrangement; and phase adjustment to achieve the same phase distribution in the channel optical waveguide array.
摘要翻译：光复用器配备有设置在光波导基板上的至少一个输入通道光波导，第一平板光波导，由具有规定波导长度的多个光波导形成的通道光波导阵列，第二平板光波导和以串联方式顺序连接的至少一个输出通道光波导; 并进行相位调整，以实现通道光波导阵列中相同的相位分布。

7. 发明授权

US4372647A Single mode optical fibers 失效
标题翻译：单模光纤
公开(公告)号：US4372647A
公开(公告)日：1983-02-08
申请号：US192704
申请日：1980-10-01
申请人： Katsunari Okamoto , Takao Edahiro , Akio Kawana , Tetsuo Miya
发明人： Katsunari Okamoto , Takao Edahiro , Akio Kawana , Tetsuo Miya
IPC分类号： C03C13/04 , G02B5/14
CPC分类号： G02B6/03611 , C03C13/045 , G02B6/03627 , G02B6/02233
摘要： In a single mode optical fiber of the type comprising a core, a cladding surrounding the core and an intermediate layer, the refractive indices n1, n2 and n3 respectively of the core, the cladding and the intermediate layer are selected such that the following relations are satisfied0.5 .DELTA.2>-1.0where ##EQU1##
摘要翻译：在包括芯，围绕芯的包层和中间层的单模光纤中，选择芯，包层和中间层的折射率n1，n2和n3，使得以下关系是满足0.5 DELTA 2> -1.0其中

8. 发明授权

US06912362B1 Dispersion slope equalizer 失效
标题翻译：色散斜率均衡器
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。

9. 发明授权

US06788865B2 Polarization maintaining optical fiber with improved polarization maintaining property 失效
标题翻译：极化维持光纤的极化保持性能
公开(公告)号：US06788865B2
公开(公告)日：2004-09-07
申请号：US09799150
申请日：2001-03-05
申请人： Satoki Kawanishi , Katsunari Okamoto
发明人： Satoki Kawanishi , Katsunari Okamoto
IPC分类号： G02B620
CPC分类号： G02B6/02328 , G02B6/02347 , G02B6/02357 , G02B6/105
摘要： A polarization maintaining optical fiber is formed by using a core in a cross sectional shape having different diameters along two orthogonal axes defined on a plane perpendicular to an optical axis, or a photonic crystal structure cladding having a diffraction grating with lattice intervals for realizing confinement of lights within the core which are different along two orthogonal axes defined on a plane perpendicular to an optical axis, or the photonic crystal structure cladding that is divided into four divided portions along a circumferential direction, where at least a part of lattice holes in a first pair of divided portions that are facing each other along one direction have a diameter larger than that of lattice holes in a second pair of divided portions that are facing each other along another direction orthogonal to the one direction.
摘要翻译：通过使用具有沿垂直于光轴的平面上限定的两个正交轴的具有不同直径的横截面形状的芯或具有用于实现限制的晶格间隔的衍射光栅的光子晶体结构包层形成偏振维持光纤芯部内的光沿着与垂直于光轴的平面限定的两个正交轴不同，或者沿着圆周方向分成四个分割部分的光子晶体结构包层，其中第一沿着一个方向彼此面对的一对分割部分的直径大于沿着与该一个方向正交的另一方向彼此面对的第二对分割部分中的格子孔的直径。

10. 发明授权

US06404966B1 Optical fiber 有权
标题翻译：光纤
公开(公告)号：US06404966B1
公开(公告)日：2002-06-11
申请号：US09306498
申请日：1999-05-06
申请人： Satoki Kawanishi , Katsunari Okamoto
发明人： Satoki Kawanishi , Katsunari Okamoto
IPC分类号： G02B602
CPC分类号： G02B6/02328 , C03B37/01205 , C03B2201/12 , C03B2201/28 , C03B2203/10 , C03B2203/16 , C03B2203/30 , C03B2203/42 , G02B6/02333 , G02B6/02347 , G02B6/105
摘要： An optical fiber including a core having an area of about several times an optical wavelength and composed of a hollow hole, and a cladding having a diffraction grating which is arranged at least in a peripheral area adjacent to the core and has a grating period equal to ½ the optical wavelength.
摘要翻译：一种光纤，包括具有大约几倍于光波长并由中空孔组成的芯的芯，以及具有衍射光栅的包层，该衍射光栅至少布置在与芯相邻的周边区域中，并且具有等于 1/2的光波长。

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