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：US07499613B2

公开(公告)日：2009-03-03

申请号：US11447229

申请日：2006-06-05

申请人： Yasuhiro Hida ,  Toshimi Kominato ,  Yasuyuki Inoue ,  Norio Takato ,  Yasumori Ohmura

发明人： Yasuhiro Hida ,  Toshimi Kominato ,  Yasuyuki Inoue ,  Norio Takato ,  Yasumori Ohmura

IPC分类号： G02B6/42 ,  G02B6/02

CPC分类号： G02B6/125 ,  G02B2006/1215

摘要： A Y branch circuit according to the present invention includes; a under clad; a circuit core, formed on the under clad and having a main core and two branch cores, connected to the main core, and an over clad that embeds the circuit core. The main core and the two branch cores are connected across an interval. The two branch cores have a width-to-height ratio of 50% to 150% and have a gap, at the main core end, that is narrower at the over clad side than at the under clad side.

摘要翻译： 根据本发明的Y分支电路包括： 下包 形成在下包层上并具有连接到主芯的主芯和两个分支芯的电路芯，以及嵌入电路芯的外包层。 主核心和两个分支核心间隔连接。 两个分支芯具有50％至150％的宽高比，并且在主芯端处具有在上包层侧比在下包层侧更窄的间隙。

公开(公告)号：US20060278960A1

公开(公告)日：2006-12-14

申请号：US11447229

申请日：2006-06-05

申请人： Yasuhiro Hida ,  Toshimi Kominato ,  Yasuyuki Inoue ,  Norio Takato ,  Yasumori Ohmura

发明人： Yasuhiro Hida ,  Toshimi Kominato ,  Yasuyuki Inoue ,  Norio Takato ,  Yasumori Ohmura

IPC分类号： H01L29/40

CPC分类号： G02B6/125 ,  G02B2006/1215

摘要： A Y branch circuit according to the present invention includes; a under clad; a circuit core, formed on the under clad and having a main core and two branch cores, connected to the main core, and an over clad that embeds the circuit core. The main core and the two branch cores are connected across an interval. The two branch cores have a width-to-height ratio of 50% to 150% and have a gap, at the main core end, that is narrower at the over clad side than at the under clad side.

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：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：US06757454B2

公开(公告)日：2004-06-29

申请号：US09958496

申请日：2002-01-29

申请人： Yasuyuki Inoue ,  Yasuaki Hashizume ,  Yoshinori Hibino ,  Akio Sugita ,  Yasuhiro Hida ,  Hiroshi Takahashi

发明人： Yasuyuki Inoue ,  Yasuaki Hashizume ,  Yoshinori Hibino ,  Akio Sugita ,  Yasuhiro Hida ,  Hiroshi Takahashi

IPC分类号： G02B626

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

摘要： A low-cost, high-reliability polarization-independent optical waveguide interferometer is proposed which does not bring about any additional job involved in the insertion of a half-wave plate or excess loss of light. In an optical multi/demultiplexer utilizing optical interference of light waves passing through a plurality of optical waveguides with different lengths, such as an AWG and a Mach-Zehnder interferometer, longitudinal integral values of birefringence values of the individual waveguides, which values are variable or invariable along the waveguides, are made equal for all waveguides 201 and 202. Thus, simply varying the waveguide width can implement polarization-independent operation, or on the contrary implement a polarization beam splitter. For example, the polarization-independent can be implemented by making the core widths, which are averaged in a longitudinal direction of a plurality of optical waveguides with different lengths, wider in a shorter optical waveguide, and narrower in a longer optical waveguide.

摘要翻译： 提出了一种低成本，高可靠性的偏振无关光波导干涉仪，其不会在插入半波片或过多的光线损失方面带来任何额外的工作。 在利用通过具有不同长度的多个光波导的光波的光学干涉（例如AWG和Mach-Zehnder干涉仪）的光学多路复用器中，单个波导的双折射值的纵向积分值是可变的或 沿着波导不变的所有波导201和202都相等。因此，简单地改变波导宽度可以实现偏振无关操作，或者相反地实现偏振分束器。 例如，可以通过使得在较短的光波导中的具有不同长度的多个光波导的纵向方向上的平均化的芯宽度更宽，并且在较长的光波导中更窄，来实现偏振无关。

公开(公告)号：US06625370B2

公开(公告)日：2003-09-23

申请号：US09931684

申请日：2001-08-16

申请人： Mikitaka Itoh ,  Ryoichi Kasahara ,  Takashi Saida ,  Yasuhiro Hida

发明人： Mikitaka Itoh ,  Ryoichi Kasahara ,  Takashi Saida ,  Yasuhiro Hida

IPC分类号： G02B610

CPC分类号： G02B6/136 ,  G02B6/122 ,  G02B6/132 ,  G02B2006/12061 ,  G02B2006/12097 ,  G02B2006/121 ,  G02B2006/12176

摘要： An optical waveguide and an optical waveguide circuit having polarization insensitivity or a required low-level polarization dependence without degradation of the optical characteristics and reliability are disclosed, and a fabricating method of an optical waveguide and an optical waveguide circuit having polarization insensitivity or a required low-level polarization dependence without increasing the fabricating burden and the cost are disclosed. The optical waveguide comprises a planar substrate; a lower cladding which is provided on the planar substrate, where the lower cladding has a ridge; a core, provided on the ridge of the lower cladding, for transmitting light; and an upper cladding provided in a manner such that the core is covered with the upper cladding. The ridge has a shape predetermined so as to decrease polarization dependence of the optical waveguide to a required low level.

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：US06904204B2

公开(公告)日：2005-06-07

申请号：US10491478

申请日：2002-10-09

申请人： Yasuhiro Hida ,  Yasuyuki Inoue ,  Toshiumi Kominato

发明人： Yasuhiro Hida ,  Yasuyuki Inoue ,  Toshiumi Kominato

IPC分类号： G02B6/34 ,  G02B6/27 ,  G02B6/293

CPC分类号： G02B6/12011 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12023

摘要： An object of this invention is to cancel a polarization dependence of a transmission center wavelength due to the waveguide birefringence in an array waveguide and a slab waveguide in an array waveguide diffraction grating type optical multiplexer/demultiplexer filter applied for optical communication, particularly, wavelength split multiplexing system. In order to achieve the object of this invention, a polarization mode convertor converts the TE mode in a waveguide to the TM mode and the TM mode to the TE mode. This conversion function makes it possible to cancel the polarization dependence of the transmission center wavelength due to the waveguide birefringence in the array waveguide and the slab waveguide in front of and behind the polarization mode convertor.

摘要翻译： 本发明的目的是消除由于应用于光通信的阵列波导衍射光栅型光信号多路复用器/解复用器滤波器中的阵列波导和平板波导中的波导双折射引起的透射中心波长的偏振相关性，特别是波长分裂 复用系统 为了实现本发明的目的，偏振模式转换器将波导中的TE模式转换为TM模式，将TM模式转换为TE模式。 该转换功能使得可以消除由于在偏振模式转换器前后的阵列波导和平板波导中的波导双折射而导致的透射中心波长的偏振度依赖性。

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。