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：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：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：US07400800B2

公开(公告)日：2008-07-15

申请号：US10540789

申请日：2003-12-26

申请人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Mikitaka Ito ,  Yoshinori Hibino ,  Akimasa Kaneko

发明人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Mikitaka Ito ,  Yoshinori Hibino ,  Akimasa Kaneko

IPC分类号： G02B6/26

CPC分类号： G02B6/12016

摘要： An arrayed waveguide grating type optical multiplexer/demultiplexer circuit in which wavelength dispersion is reduced. An input wave guide (1), a first slab waveguide (2), an arrayed waveguide (3), a second slab waveguide (4) and an output waveguide (5) are connected sequentially. Furthermore, a parabola waveguide (6) is provided between the input waveguide (1) and the first slab waveguide (2), and a taper waveguide (7) is provided between the second slab waveguide (4) and the output waveguide (5). A parabola waveguide length Z0 exists in a range Za,0=Z0=Zp,0 determined by a parabola waveguide length Za,0 where the ratio of absolute amplitude between the main peak and the first side peak in the field distribution of far-field of the parabola waveguide (6) has an upper limit of 0.217, and a parabola waveguide length Zp,0 where the relative phase of the main peak and the first side peak in the field distribution of far-field has a lower limit of 3.14 radian.

摘要翻译： 波长分散减小的阵列波导光栅类型的光信号多路复用器/多路分离器电路。 依次连接输入波导（1），第一平板波导（2），阵列波导（3），第二平板波导（4）和输出波导（5）。 此外，在输入波导（1）和第一平板波导（2）之间设置有抛物线波导（6），在第二平板波导（4）和输出波导（5）之间设置锥形波导（7） 。 抛物线波导长度Z 0存在于范围Z a a 0，Z 0，Z 0，Z 0，...，Z 0， 由抛物线波导长度Z a a 0确定，其中抛物线波导（6）的远场的主峰和第一侧峰之间的绝对幅度的比值具有上 极限为0.217，抛物线波导长度Z

0，其中远场的场分布中的主峰和第一侧峰的相对相位具有3.14弧度的下限。

公开(公告)号：US06937797B2

公开(公告)日：2005-08-30

申请号：US09950635

申请日：2001-09-13

申请人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida

发明人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/132 ,  G02B6/136 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02B6/12011 ,  G02B6/12016 ,  G02B6/12023 ,  G02B6/1228 ,  G02B6/132 ,  G02B6/136 ,  G02B2006/121 ,  G02B2006/12176

摘要： A planar lightwave circuit is provided. The planar lightwave circuit includes a waveguide and a spotsize converter which is a part of the waveguide, wherein a core is embedded in a cladding in the waveguide, and the spotsize converter is located near an end face of a substrate on which the planar lightwave circuit is formed, the spotsize converter including: a core width fine-tuning part in an end face side of the substrate; and a core width converting part which follows the core width fine-tuning part; wherein core width of the spotsize converter is minimum at an end face of the substrate, a mean taper angle θ1 of the core width fine-tuning part is larger than 0° and smaller than a mean taper angle θ2 of the core width converting part.

摘要翻译： 提供平面光波电路。 平面光波电路包括作为波导的一部分的波导和斑点转换器，其中芯体嵌入在波导中的包层中，并且斑点转换器位于基板的端面附近，在该基板上的平面光波电路 所述斑点转换器包括：在所述基板的端面侧的芯宽度微调部; 以及沿着芯宽微调部分的芯宽转换部分; 其中斑点转换器的芯宽度在基板的端面处最小，芯宽度微调部分的平均锥角θ1大于0°并且小于平均锥角 核心宽度转换部分的θ2/2。

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：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：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。