公开(公告)号：US06731828B2

公开(公告)日：2004-05-04

申请号：US10185817

申请日：2002-06-28

申请人： Tsutomu Kitou ,  Yasuyuki Inoue ,  Manabu Oguma ,  Takayuki Mizuno ,  Yoshinori Hibino ,  Masaki Koutoku

发明人： Tsutomu Kitou ,  Yasuyuki Inoue ,  Manabu Oguma ,  Takayuki Mizuno ,  Yoshinori Hibino ,  Masaki Koutoku

IPC分类号： G02B612

CPC分类号： G02B6/138 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/1221 ,  G02B6/132 ,  G02B6/136 ,  G02B2006/12061 ,  G02B2006/12069 ,  G02B2006/12109 ,  G02B2006/12147 ,  G02B2006/12159 ,  G02B2006/12164 ,  G02B2006/12173

摘要： It is an object of the present invention to reduce the size of a circuit and the adverse effects of fabrication errors, while increasing yield. Signal light incident on a circuit through input waveguides propagates from the exterior to interior of the circuit while rotating counterclockwise. The signal light passes through a point of inflection in the center of the circuit, subsequently propagate clockwise from the interior to exterior of the circuit, and then exit output waveguides. Two arms constituting a delay circuit and optical couplers can be integrated together at such an interval that they are not coupled together. Therefore, the size of the circuit can be reduced compared to the prior art.

摘要翻译： 本发明的一个目的是减小电路的尺寸和制造误差的不利影响，同时提高产量。 通过输入波导入射到电路上的信号光在逆时针旋转的同时从电路的外部传播到内部。 信号光通过电路中心的拐点，随后从电路的内部向外传播顺时针，然后退出输出波导。 构成延迟电路和光耦合器的两个臂可以以不会耦合在一起的间隔被集成在一起。 因此，与现有技术相比，可以减小电路的尺寸。

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：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：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：US08150219B2

公开(公告)日：2012-04-03

申请号：US12521867

申请日：2007-12-27

申请人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

发明人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

IPC分类号： G02B6/27 ,  G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/1228 ,  G02B6/126 ,  G02B2006/12116 ,  G02B2006/12159

摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.

摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。

公开(公告)号：US20100104237A1

公开(公告)日：2010-04-29

申请号：US12521867

申请日：2007-12-27

申请人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

发明人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

IPC分类号： G02B6/27 ,  G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/1228 ,  G02B6/126 ,  G02B2006/12116 ,  G02B2006/12159

摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.

摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。

公开(公告)号：US20060023989A1

公开(公告)日：2006-02-02

申请号：US10534434

申请日：2004-09-10

申请人： Masashiro Yanagisawa ,  Taisuke Oguchi ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Yasuhiro Hida ,  Motohava Ishii

发明人： Masashiro Yanagisawa ,  Taisuke Oguchi ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Yasuhiro Hida ,  Motohava Ishii

IPC分类号： G02B6/12

CPC分类号： G02B6/29368 ,  G02B6/12007 ,  G02B6/2938 ,  G02B2006/12109

摘要： Disclosed is a wavelength multi/demultiplexer for separating two wavelength bands with a narrow wavelength spacing. A dielectric multilayer filter is provided in an intersection portion where two optical waveguides intersect each other and separates incident light to the dielectric multilayer filter to transmitted light and reflected light. Here, the distance X from the multilayer surface on the light-incident side of the dielectric multilayer to the central intersection point of the two intersecting optical waveguides is arranged to satisfy 0≦X≦d/2 (where “d” represents the thickness of the dielectric multilayer). With this configuration, a multi/demultiplexer can be realized that shows good wavelength response without spectral degradation even for two wavelengths having narrow wavelength spacing.

摘要翻译： 公开了用于分离窄波长间隔的两个波长带的波长多路复用器。 在两个光波导彼此交叉的交叉部分中设置有电介质多层滤波器，将入射光分离到电介质多层滤波器以透射光和反射光。 这里，从电介质多层体的光入射侧的多层表面到两个相交的光波导的中心交点的距离X被设置为满足0 <= X <= d / 2（其中，“d”表示 电介质多层膜的厚度）。 利用这种配置，即使对于具有窄波长间隔的两个波长，也可以实现显示良好的波长响应而没有频谱衰减的多路分离器。

公开(公告)号：US07313297B2

公开(公告)日：2007-12-25

申请号：US10534434

申请日：2004-09-10

申请人： Masahiro Yanagisawa ,  Taisuke Oguchi ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Yasuhiro Hida ,  Motohaya Ishii

发明人： Masahiro Yanagisawa ,  Taisuke Oguchi ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Yasuhiro Hida ,  Motohaya Ishii

IPC分类号： G02B6/26

CPC分类号： G02B6/29368 ,  G02B6/12007 ,  G02B6/2938 ,  G02B2006/12109

摘要： Disclosed is a wavelength multi/demultiplexer for separating two wavelength bands with a narrow wavelength spacing. A dielectric multilayer filter is provided in an intersection portion where two optical waveguides intersect each other and separates incident light to the dielectric multilayer filter to transmitted light and reflected light. Here, the distance X from the multilayer surface on the light-incident side of the dielectric multilayer to the central intersection point of the two intersecting optical waveguides is arranged to satisfy 0≦X≦d/2 (where “d” represents the thickness of the dielectric multilayer). With this configuration, a multi/demultiplexer can be realized that shows good wavelength response without spectral degradation even for two wavelengths having narrow wavelength spacing.

摘要翻译： 公开了用于分离窄波长间隔的两个波长带的波长多路复用器。 在两个光波导彼此交叉的交叉部分中设置有电介质多层滤波器，将入射光分离到电介质多层滤波器以透射光和反射光。 这里，从电介质多层体的光入射侧的多层表面到两个相交的光波导的中心交点的距离X被设置为满足0 <= X <= d / 2（其中，“d”表示 电介质多层膜的厚度）。 利用这种配置，即使对于具有窄波长间隔的两个波长，也可以实现显示良好的波长响应而没有频谱衰减的多路分离器。

公开(公告)号：US06546161B2

公开(公告)日：2003-04-08

申请号：US09761628

申请日：2001-01-17

申请人： Masayuki Okuno ,  Akira Himeno ,  Yoshinori Hibino ,  Yasuyuki Inoue

发明人： Masayuki Okuno ,  Akira Himeno ,  Yoshinori Hibino ,  Yasuyuki Inoue

IPC分类号： G02B612

CPC分类号： G02B6/12011 ,  G02B6/12023 ,  G02B6/125 ,  G02B6/126 ,  G02B2006/12145 ,  G02B2006/12159 ,  G02B2006/12195

摘要： A no polarization dependent waveguide type optical circuit can resolve polarization dependency completely and can reduce reflected return light. An intermediate portion of the two connecting waveguides are formed with S-shaped waveguides of the same shape consisted of respectively two curved waveguides or two curved waveguides and straight waveguides connecting the curved waveguides. One polarization mode converter is provided in a groove formed across the S-shaped waveguide, and a perpendicular line to an incident surface of light of the polarization mode converter and the S-shaped waveguide forms an angle greater than 0°.

摘要翻译： 无偏振相关波导型光电路可以完全解决偏振依赖性，可以减少反射光。 两个连接波导的中间部分形成有相同形状的S形波导，分别由连接弯曲波导的两个弯曲波导或两个弯曲波导和直波导构成。 一个偏振模式转换器设置在跨越S形波导的沟槽中，并且与偏振模转换器和S形波导的光的入射表面的垂直线形成大于0°的角度。

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。