公开(公告)号：US06606433B2

公开(公告)日：2003-08-12

申请号：US09892939

申请日：2001-06-27

申请人： Manabu Oguma ,  Akira Himeno ,  Kaname Jinguji ,  Tsutomu Kitoh ,  Yoshinori Hibino

发明人： Manabu Oguma ,  Akira Himeno ,  Kaname Jinguji ,  Tsutomu Kitoh ,  Yoshinori Hibino

IPC分类号： G02B634

CPC分类号： G02B6/12021 ,  G02B6/29355 ,  G02B6/2938 ,  G02F1/0147 ,  H04J14/02

摘要： An optical multi/demultiplexer is provided that has a wide passband and small crosstalk among its all channels. It includes first and second arrayed waveguide gratings and a 2×2 optical signal processor. The 2×2 optical signal processor includes first to fourth directional couplers, and first to third delay lines. The first to third delay lines have thin film heater phase shifters for correcting phase errors involved in fabrication. Utilizing the 2×2 optical signal processor having a transmission spectrum with a square profile having a wide passband and rejection band makes it possible for the optical multi/demultiplexer that combines the arrayed waveguide gratings with the waveguide type circulating filter (2×2 optical signal processor) to widen the extinction bandwidth of the adjacent channel.

公开(公告)号：US06735358B2

公开(公告)日：2004-05-11

申请号：US10067065

申请日：2002-02-04

申请人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Manabu Oguma ,  Yoshinori Hibino ,  Kaname Jinguji

发明人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Manabu Oguma ,  Yoshinori Hibino ,  Kaname Jinguji

IPC分类号： G02B628

CPC分类号： G02B6/2938 ,  G02B6/12007 ,  G02B6/29355 ,  G02B6/29394 ,  G02B2006/12159 ,  H04J14/02

摘要： The present invention provides an optical demultiplexer and an optical multiplexer the transmission characteristics of which are unlikely to be affected by fabrication errors and which have small group delay dispersion. A cross output port (X-OUT) of a second optical demultiplexer element (DEMUX) is selected, and a through output port (T-OUT) of a third DEMUX is selected. A T-OUT of a first DEMUX has a passband equal to the X-OUT of the second DEMUX, and a X-OUT of the first DEMUX has a passband equal to the T-OUT of the third DEMUX. The T-OUT of the first DEMUX has group delay characteristics opposite to those of the X-OUT of the second DEMUX, and the X-OUT of the first DEMUX has group delay characteristics opposite to those of the T-OUT of the third DEMUX.

摘要翻译： 本发明提供一种光解复用器和光复用器，其传输特性不太可能受制造误差的影响，并且具有较小的组延迟色散。 选择第二光解复用器元件（DEMUX）的交叉输出端口（X-OUT），并且选择第三DEMUX的直通输出端口（T-OUT）。 第一DEMUX的T-OUT具有等于第二DEMUX的X-OUT的通带，并且第一DEMUX的X-OUT具有等于第三DEMUX的T-OUT的通带。 第一DEMUX的T-OUT具有与第二DEMUX的X-OUT相反的组延迟特性，并且第一DEMUX的X-OUT具有与第三DEMUX的T-OUT相反的组延迟特性 。

公开(公告)号：US20110268447A1

公开(公告)日：2011-11-03

申请号：US13143161

申请日：2010-01-08

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： H04J14/02

CPC分类号： G02B6/12019 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12021

摘要： When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency.

摘要翻译： 当使用传统的同步AWG来扩展传输通带时，不能避免光中心频率附近损耗的增加。 由于通带宽度限制，存在的问题是，同步的AWG不能应用于信号光通过多个点的大型复杂的通信系统。 因此，本发明的光波分复用/解复用电路是同步的AWG，其包括布置在连接在一个平板波导侧的干扰电路中的光分路器。 光分路器的分频比根据光频率而变化，并且在同步AWG的光中心频率附近值变得最小。 操作光分路器，使得在远离光中心频率的光频率下的分光比相对较大。

公开(公告)号：US08483525B2

公开(公告)日：2013-07-09

申请号：US13143161

申请日：2010-01-08

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： G02B6/12

CPC分类号： G02B6/12019 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12021

摘要： When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency.

摘要翻译： 当使用传统的同步AWG来扩展传输通带时，不能避免光中心频率附近损耗的增加。 由于通带宽度限制，存在的问题是，同步的AWG不能应用于信号光通过多个点的大型复杂的通信系统。 因此，本发明的光波分复用/解复用电路是同步的AWG，其包括布置在连接在一个平板波导侧的干扰电路中的光分路器。 光分路器的分频比根据光频率而变化，并且在同步AWG的光中心频率附近值变得最小。 操作光分路器，使得在远离光中心频率的光频率下的分光比相对较大。

公开(公告)号：US07085438B2

公开(公告)日：2006-08-01

申请号：US10727171

申请日：2003-12-03

申请人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Manabu Oguma ,  Yasuyuki Inoue

发明人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Manabu Oguma ,  Yasuyuki Inoue

IPC分类号： G02B6/26

CPC分类号： G02B6/12019 ,  G02B6/12007 ,  G02B6/12016 ,  G02B6/12021 ,  G02B6/12023 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/2938

摘要： An optical multi/demultiplexing circuit includes at least one phase generating optical coupler and an optical delay line coupled to the phase generating optical coupler. The phase generating optical coupler consists of at least one input and at least two outputs. At least one of the phase generating optical coupler has a wavelength dependent or frequency dependent output phase difference in the passband of the circuit so that it can change the transmittance characteristics of the optical multi/demultiplexing circuit.

摘要翻译： 光学多路复用电路包括至少一个相位产生光耦合器和耦合到相位产生光耦合器的光延迟线。 相位产生光耦合器由至少一个输入和至少两个输出组成。 相位产生光耦合器中的至少一个在电路的通带中具有与波长相关或频率相关的输出相位差，使得其可以改变光学多路复用/解复用电路的透射特性。

公开(公告)号：US08737779B2

公开(公告)日：2014-05-27

申请号：US13395095

申请日：2010-08-25

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： G02B6/34 ,  G02B6/293 ,  G02B6/12 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/29391 ,  G02B6/12009 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12021 ,  G02B6/29355 ,  G02B6/2938 ,  G02B2006/12159

摘要： An optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one includes an AWG and two-stage lattice circuit. An example of a two-stage lattice circuit according to the present invention includes an input waveguide, a third optical coupler, a third and fourth arm waveguides, a second optical coupler, a first and second arm waveguides, a first optical coupler, and output waveguides. The optical path length differences between the third and fourth arm waveguides and between the first and second arm waveguides are designed to be ΔL. The path passing the third and first arm waveguides differs by 2·ΔL in optical length from that the fourth and second arm waveguides. The paths passing the third and second arm waveguides and passing the fourth and first arm waveguides differ by ΔL from that passing the fourth and second arm waveguides.

摘要翻译： 具有传统特性的具有比常规方式更高的矩形度的光波长多路复用器包括AWG和两级晶格电路。 根据本发明的两级晶格电路的示例包括输入波导，第三光耦合器，第三和第四臂波导，第二光耦合器，第一和第二臂波导，第一光耦合器和输出 波导。 第三和第四臂波导之间以及第一和第二臂波导之间的光程长度差被设计为＆D; L。 通过第三和第一臂波导的路径与第四和第二臂波导的光学长度不同，为2·＆Dgr; L。 通过第三和第二臂波导并使第四和第一臂波导通过的路径与通过第四和第二臂波导的路径不同。

公开(公告)号：US07590312B2

公开(公告)日：2009-09-15

申请号：US10536649

申请日：2004-07-02

申请人： Takayuki Mizuno ,  Hiroshi Takahashi ,  Tsutomu Kitoh ,  Manabu Oguma ,  Shunichi Souma

发明人： Takayuki Mizuno ,  Hiroshi Takahashi ,  Tsutomu Kitoh ,  Manabu Oguma ,  Shunichi Souma

IPC分类号： G02F1/01 ,  G02F1/035 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/266 ,  G02B6/12007 ,  G02F1/3136 ,  G02F2203/04

摘要： The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least one of the optical multi/demultiplexing device included in the interferometer optical switch. A wavelength insensitive interferometer optical switch is implemented by making the sum 2π{φ1(λ)+φΔL(λ)+φ2(λ)} constant regardless of the wavelength, where φ1(λ) is the phase produced by the first optical multi/demultiplexing device, 2πφΔL(λ) is the phase difference of the optical delay line with an optical path length difference of ΔL, and 2πφ2(λ) is the phase produced by the second optical multi/demultiplexing device.

摘要翻译： 本发明公开了一种能够进行宽带切换并具有高消光比和大制造公差的干涉仪光开关。 干涉仪光开关采用相位发生耦合器，其相位差输出具有波长依赖性，作为包括在干涉仪光开关中的光多路复用/解复用器件中的至少一个。 波长不敏感的干涉仪光开关是通过使得波长不同的2π{phi1（λ）+ phiDeltaL（λ）+ phi2（λ）}的和来实现的，其中phi1（λ）是由第一光学多/ 解复用器件，2piphiDeltaL（λ）是光延迟线与DeltaL的光程长度差的相位差，2piphi2（λ）是由第二光多路复用器件产生的相位。

公开(公告)号：US20120170891A1

公开(公告)日：2012-07-05

申请号：US13395095

申请日：2010-08-25

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： G02B6/34

CPC分类号： G02B6/29391 ,  G02B6/12009 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12021 ,  G02B6/29355 ,  G02B6/2938 ,  G02B2006/12159

摘要： An optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one includes an AWG and two-stage lattice circuit. An example of a two-stage lattice circuit according to the present invention includes an input waveguide, a third optical coupler, a third and fourth arm waveguides, a second optical coupler, a first and second arm waveguides, a first optical coupler, and output waveguides. The optical path length differences between the third and fourth arm waveguides and between the first and second arm waveguides are designed to be ΔL. The path passing the third and first arm waveguides differs by 2·ΔL in optical length from that the fourth and second arm waveguides. The paths passing the third and second arm waveguides and passing the fourth and first arm waveguides differ by ΔL from that passing the fourth and second arm waveguides.

摘要翻译： 具有传统特性的具有比常规方式更高的矩形度的光波长多路复用器包括AWG和两级晶格电路。 根据本发明的两级晶格电路的示例包括输入波导，第三光耦合器，第三和第四臂波导，第二光耦合器，第一和第二臂波导，第一光耦合器和输出 波导。 第三和第四臂波导之间以及第一和第二臂波导之间的光程长度差被设计为＆D; L。 通过第三和第一臂波导的路径与第四和第二臂波导的光学长度不同，为2·＆Dgr; L。 通过第三和第二臂波导并使第四和第一臂波导通过的路径与通过第四和第二臂波导的路径不同。

公开(公告)号：US20060072866A1

公开(公告)日：2006-04-06

申请号：US10536649

申请日：2004-07-02

申请人： Takayuki Mizuno ,  Hiroshi Takahashi ,  Tsutomu Kitoh ,  Manabu Oguma ,  Shunichi Souma

发明人： Takayuki Mizuno ,  Hiroshi Takahashi ,  Tsutomu Kitoh ,  Manabu Oguma ,  Shunichi Souma

IPC分类号： G02F1/01 ,  G02F1/035 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/266 ,  G02B6/12007 ,  G02F1/3136 ,  G02F2203/04

摘要： The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least one of the optical multi/demultiplexing device included in the interferometer optical switch. A wavelength insensitive interferometer optical switch is implemented by making the sum 2π{φ1(λ)+φΔL(λ)+φ2(λ)} constant regardless of the wavelength, where φ1(λ) is the phase produced by the first optical multi/demultiplexing device, 2πφΔL(λ) is the phase difference of the optical delay line with an optical path length difference of ΔL, and 2πφ2(λ) is the phase produced by the second optical multi/demultiplexing device.

摘要翻译： 本发明公开了一种能够进行宽带切换并具有高消光比和大制造公差的干涉仪光开关。 干涉仪光开关采用相位发生耦合器，其相位差输出具有波长依赖性，作为包括在干涉仪光开关中的光多路复用/解复用器件中的至少一个。 波长不敏感的干涉仪光开关是通过使得2π（φi）1（λ）+ phiDeltaL（λ）+ phi2（＆lt; λ）}不管波长如何，其中，第一光学多路复用/解复用器件产生的相位是λi（λ），2π（λ）是相位 光延迟线与DeltaL和2piphi2λ（λ）的光程长度差的差是由第二光多路分离装置产生的相位。

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。