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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.
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公开(公告)号：US20060278960A1
公开(公告)日：2006-12-14
申请号：US11447229
申请日：2006-06-05
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.
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公开(公告)号：US07499613B2
公开(公告)日：2009-03-03
申请号：US11447229
申请日：2006-06-05
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。
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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.
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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
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。
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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。
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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。
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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
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。
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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
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。
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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。
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