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：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：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：US08867873B2

公开(公告)日：2014-10-21

申请号：US13001347

申请日：2009-06-30

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/28 ,  G02B6/12

CPC分类号： G02B6/12026 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12028 ,  G02B6/1203

摘要： An optical wavelength multi/demultiplexing circuit is provided in which temperature dependence at a transmission center wavelength remained in an athermalized AWG is compensated. An AWG according to an embodiment of the present invention is compensated for the main temperature dependence at the transmission center wavelength. The AWG comprises an optical splitter, a first and second arm waveguides, an optical mode combining coupler and a multimode waveguide between an input/output waveguide and a slab waveguide. The optical mode combining coupler couples fundamental mode light from the first arm waveguide as fundamental mode and the fundamental mode light from the second arm waveguide as first mode. The multimode waveguide is capable of propagating the fundamental and first mode light. This AWG is configured such that the temperature dependence remained in the arrayed waveguide grating is compensated by changing the optical path length difference between the first and second arm waveguides with temperature.

摘要翻译： 提供了一种光波长多路解多路复用电路，其中传输中心波长处的温度依赖性保持在非热化AWG中。 根据本发明的实施例的AWG被补偿在传输中心波长处的主要温度依赖性。 AWG包括光分路器，第一和第二臂波导，光学模式组合耦合器和输入/输出波导和平板波导之间的多模波导。 光学模式组合耦合器将来自第一臂波导的基本模式光耦合作为基本模式，并将来自第二臂波导的基模光耦合为第一模式。 多模波导能够传播基本和第一模式光。 该AWG被配置为使得通过改变第一和第二臂波导之间的光程长度差随温度来补偿保持在阵列波导光栅中的温度依赖性。

公开(公告)号：US20110110624A1

公开(公告)日：2011-05-12

申请号：US13001347

申请日：2009-06-30

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/28

CPC分类号： G02B6/12026 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12028 ,  G02B6/1203

摘要： An optical wavelength multi/demultiplexing circuit is provided in which temperature dependence at a transmission center wavelength remained in an athermalized AWG is compensated. An AWG according to an embodiment of the present invention is compensated for the main temperature dependence at the transmission center wavelength. The AWG comprises an optical splitter, a first and second arm waveguides, an optical mode combining coupler and a multimode waveguide between an input/output waveguide and a slab waveguide. The optical mode combining coupler couples fundamental mode light from the first arm waveguide as fundamental mode and the fundamental mode light from the second arm waveguide as first mode. The multimode waveguide is capable of propagating the fundamental and first mode light. This AWG is configured such that the temperature dependence remained in the arrayed waveguide grating is compensated by changing the optical path length difference between the first and second arm waveguides with temperature.

摘要翻译： 提供了一种光波长多路解多路复用电路，其中传输中心波长处的温度依赖性保持在非热化AWG中。 根据本发明的实施例的AWG被补偿在传输中心波长处的主要温度依赖性。 AWG包括光分路器，第一和第二臂波导，光学模式组合耦合器和输入/输出波导和平板波导之间的多模波导。 光学模式组合耦合器将来自第一臂波导的基本模式光耦合作为基本模式，并将来自第二臂波导的基模光耦合为第一模式。 多模波导能够传播基本和第一模式光。 该AWG被配置为使得通过改变第一和第二臂波导之间的光程长度差随温度来补偿保持在阵列波导光栅中的温度依赖性。

公开(公告)号：US07245793B2

公开(公告)日：2007-07-17

申请号：US10715146

申请日：2003-11-17

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Takuya Tanaka ,  Toshikazu Hashimoto

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Takuya Tanaka ,  Toshikazu Hashimoto

IPC分类号： G02B6/12 ,  G02B6/36

CPC分类号： G02B6/12011 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12023 ,  G02B6/12028 ,  G02B6/122 ,  G02B6/125 ,  G02B2006/12107 ,  G02B2006/12145 ,  G02B2006/12195

摘要： An optical waveguide circuit includes a first loss component for causing a diffraction loss of light propagating through an optical waveguide, and a second loss component provided at least one of before and after the first loss component, for causing a diffraction loss less than the diffraction loss in the first loss component to the light propagating through the optical waveguide. This enables the beam spot size of the lightwave launched into the first loss component to be magnified seemingly, and to reduce the radiation angle of the lightwave at the first loss component, thereby making it possible to reduce the excess loss involved in the propagation of the light through the optical waveguide.

摘要翻译： 一种光波导电路包括：第一损耗分量，用于使通过光波导传播的光的衍射损耗和第二损耗分量提供在第一损耗分量之前和之后的至少之一，用于使衍射损耗小于衍射损耗 在通过光波导传播的光的第一损耗分量中。 这使得发射到第一损耗分量中的光波的光束尺寸看起来被放大，并且为了减小第一损耗分量处的光波的辐射角，从而可以减少在 通过光波导的光。

公开(公告)号：US06775454B2

公开(公告)日：2004-08-10

申请号：US10142130

申请日：2002-05-09

申请人： Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida ,  Yasuyuki Inoue

发明人： Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida ,  Yasuyuki Inoue

IPC分类号： G02B626

CPC分类号： G02B6/1228 ,  G02B6/132 ,  G02B2006/121 ,  G02B2006/12195

摘要： A silica-based optical waveguide circuit serves to reduce the time required to production while allowing a spot size converting function to work sufficiently. In a silica-based optical waveguide circuit comprising an input/output waveguide core formed to be thicker than an waveguide core and a tapered portion for connecting the input/output waveguide core and the waveguide core, wherein the waveguide circuit further has a core layer at each side of the input/output waveguide core, a thickness T of the core layer at the side of the input/output waveguide core is smaller than the thickness H of the input/output waveguide core.

摘要翻译： 二氧化硅基光波导电路用于减少制作时间，同时允许光点尺寸转换功能充分发挥作用。 在包括形成为比波导芯厚的输入/输出波导芯和用于连接输入/输出波导芯和波导芯的锥形部分的二氧化硅基光波导电路中，其中波导电路还具有芯层 输入/输出波导芯的每一侧，芯层在输入/输出波导芯一侧的厚度T小于输入/输出波导芯的厚度H.

公开(公告)号：US06580862B2

公开(公告)日：2003-06-17

申请号：US10026084

申请日：2001-12-21

申请人： Toshimi Kominato ,  Akio Sugita ,  Mikitaka Itoh ,  Yasuyuki Inoue ,  Yasuhiro Hida

发明人： Toshimi Kominato ,  Akio Sugita ,  Mikitaka Itoh ,  Yasuyuki Inoue ,  Yasuhiro Hida

IPC分类号： G02B610

CPC分类号： G02B6/12011 ,  G02B6/105 ,  G02B6/12023 ,  G02B6/122 ,  G02B6/2813 ,  G02B2006/121

摘要： An optical waveguide circuit is provided that can reduce or eliminate polarization dependence by reducing or eliminating birefringence. A substrate consists of a silicon substrate, and a cladding and a core are composed of silica-based glass. The core has a multilayer structure composed of a few types of layers with different refractive indices such as first core layers and second core layers stacked in the direction parallel to the substrate. As for the birefringence of the waveguide, the geometrical birefringence caused by the multilayer structure is canceled out by the other birefringence, thereby being able to reduce or eliminate the birefringence of the waveguide.

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：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。