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：US20060233491A1

公开(公告)日：2006-10-19

申请号：US10540789

申请日：2003-12-26

申请人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Mikitaka Ito

发明人： Tsutomu Kitoh ,  Yasuyuki Inoue ,  Mikitaka Ito

IPC分类号： G02B6/34

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：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：US20110116802A1

公开(公告)日：2011-05-19

申请号：US13054158

申请日：2009-06-30

申请人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： H04J14/02

CPC分类号： G02B6/12028 ,  G02B6/12019 ,  G02B6/29352 ,  G02B6/29398

摘要： An optical wavelength multiplexing/de-multiplexing circuit having a low loss and a flat transmission spectrum is provided. The optical wavelength multiplexing/de-multiplexing circuit compensates a temperature dependence of a center transmission wavelength which remains in an athermal AWG, and has an excellent accuracy of the center transmission wavelength in a whole operating temperature range or has a comparatively wide operable temperature range. The temperature dependence of the transmission wavelength in the athermal MZI is modulated and set so as to cancel the temperature dependence of the center wavelength which remains in the athermal AWG. The present invention focuses particularly on an optical coupler in the MZI and modulates the temperature dependence of the transmission wavelength in the MZI by providing the optical coupler itself with a mechanism which changes a phase difference between two outputs by temperature.

摘要翻译： 提供具有低损耗和平坦透射光谱的光波长多路复用/解复用电路。 光波长复用/解复用电路补偿保持在无热AWG中的中心透射波长的温度依赖性，并且在整个工作温度范围内具有优异的中心透射波长的精度或具有相当宽的可操作温度范围。 在无热MZI中的透射波长的温度依赖性被调制和设定，以抵消保持在无热AWG中的中心波长的温度依赖性。 本发明特别着重于MZI中的光耦合器，并且通过为光耦合器本身提供一种通过温度改变两个输出之间的相位差的机构来调制MZI中的透射波长的温度依赖性。

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：US08369666B2

公开(公告)日：2013-02-05

申请号：US13054158

申请日：2009-06-30

申请人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/34 ,  H04J14/02

CPC分类号： G02B6/12028 ,  G02B6/12019 ,  G02B6/29352 ,  G02B6/29398

摘要： An optical wavelength multiplexing/de-multiplexing circuit having a low loss and a flat transmission spectrum is provided. The optical wavelength multiplexing/de-multiplexing circuit compensates a temperature dependence of a center transmission wavelength which remains in an athermal AWG, and has an excellent accuracy of the center transmission wavelength in a whole operating temperature range or has a comparatively wide operable temperature range. The temperature dependence of the transmission wavelength in the athermal MZI is modulated and set so as to cancel the temperature dependence of the center wavelength which remains in the athermal AWG. The present invention focuses particularly on an optical coupler in the MZI and modulates the temperature dependence of the transmission wavelength in the MZI by providing the optical coupler itself with a mechanism which changes a phase difference between two outputs by temperature.

摘要翻译： 提供具有低损耗和平坦透射光谱的光波长多路复用/解复用电路。 光波长复用/解复用电路补偿保持在无热AWG中的中心透射波长的温度依赖性，并且在整个工作温度范围内具有优异的中心透射波长精度或具有相对较宽的可操作温度范围。 在无热MZI中的透射波长的温度依赖性被调制和设定，以抵消保持在无热AWG中的中心波长的温度依赖性。 本发明特别着重于MZI中的光耦合器，并且通过为光耦合器本身提供一种通过温度改变两个输出之间的相位差的机构来调制MZI中的透射波长的温度依赖性。

公开(公告)号：US20100274541A1

公开(公告)日：2010-10-28

申请号：US12834561

申请日：2010-07-12

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G06F17/10

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

摘要翻译： 提供一种平面光波电路，其可以通过现有的平面光波形电路制造工艺容易地制造，这可以降低信号光的传播损耗，并且其可以转换输入的信号光以便导出期望的信号光。 具有形成在基板上的芯和包层的平面光波电路具有输入信号光的输入光波导（111），用于将输入的信号光的基模耦合到模式耦合部（112） 高阶模式和/或辐射模式或用于将高阶模式和/或辐射模式重新耦合到基模的模式再耦合部分（113），以及输出光波导（114） 输出信号灯。 模式耦合部分或模式重新耦合部分是具有连续变化的芯宽度和/或高度的光波导。

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。