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1. 发明专利

JP2005010805A Waveguide optical interferometer 有权
标题翻译：波导光学干涉仪
公开(公告)号：JP2005010805A
公开(公告)日：2005-01-13
申请号：JP2004260323
申请日：2004-09-07
申请人： Nippon Telegr & Teleph Corp , Ntt Electornics Corp , エヌティティエレクトロニクス株式会社 , 日本電信電話株式会社
发明人： INOUE YASUYUKI , HASHIZUME YASUAKI , HIBINO YOSHINORI , SUGITA AKIO , HIDA YASUHIRO , TAKAHASHI HIROSHI
IPC分类号： G02B6/12 , G02B6/122 , G02B6/126 , G02B6/34
CPC分类号： G02B6/12011 , G02B6/12023 , G02B6/126 , G02B2006/12159
摘要： PROBLEM TO BE SOLVED: To provide a waveguide optical interferometer which is low in cost, has high reliability and is independent of polarization. SOLUTION: The waveguide optical interferometer is constituted of optical waveguides on a substrate and consists of optical branching sections, a plurality of optical waveguides having different lengths and optical coupling sections. The optical interferometer is a Mach-Zehnder optical interferometer made of two optical couplers and two waveguides which are used to connect the optical couplers and have mutually different lengths. Core widths of the two optical waveguides are mutually different at least in one portion and the values obtained by integrating double refractivity of the two optical waveguides are made different for 1/2 of the optical wavelength that are mutually used. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供成本低的波导光干涉仪，具有高可靠性并且与偏振无关。解决方案：波导光干涉仪由基板上的光波导构成，由光分路部分，具有不同长度的多个光波导和光耦合部分组成。光干涉仪是由两个光耦合器和两个波导制成的马赫 - 曾德尔光学干涉仪，用于连接光耦合器并具有相互不同的长度。两个光波导的芯宽度至少在一个部分上是相互不同的，并且通过使两个光波导的双折射率的积分所得到的值对于相互使用的光波长的1/2而不同。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2009282449A Waveguide terminating method in waveguide type device 有权
标题翻译：波导型设备中的波形终止方法
公开(公告)号：JP2009282449A
公开(公告)日：2009-12-03
申请号：JP2008136823
申请日：2008-05-26
申请人： Nippon Telegr & Teleph Corp , Ntt Electornics Corp , Nttエレクトロニクス株式会社 , 日本電信電話株式会社
发明人： SOMA SHUNICHI , GO TAKASHI , HASHIZUME YASUAKI , YANAGISAWA MASAHIRO , ISHIKAWA TAKANORI , NAGANO MITSURU , MURASAWA ATSUSHI , OKUNO MASAYUKI
IPC分类号： G02F1/01 , G02B6/12
CPC分类号： G02B6/12019 , G02B2006/12126 , G02B2006/12195
摘要： PROBLEM TO BE SOLVED: To provide a method of properly terminating extra light power in a waveguide type device. SOLUTION: The waveguide type device is equipped with a terminating structure in which a light shielding material is filled for the purpose of terminating light from a waveguide end part. This terminating structure can be formed by forming a groove on the optical waveguide by removing a clad and a core, and filling the groove with a material (light shielding material) for attenuating light intensity. Consequently, light made incident on the terminating structure is attenuated by the light shielding material, suppressing effect on other optical devices caused by becoming a cross talk component. Such terminating structure can suppress effect between optical devices integrated in the same substrate as well as effect on other optical devices directly connected to the substrate. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种在波导型设备中适当地终止额外光功率的方法。解决方案：波导型器件配备有端接结构，其中为了终止来自波导端部的光的目的而填充遮光材料。该终端结构可以通过在光波导上除去包层和芯，并用用于衰减光强度的材料（遮光材料）填充凹槽来形成凹槽。因此，入射到终端结构的光被遮光材料衰减，抑制了由于成为串扰分量而引起的对其它光学器件的影响。这种端接结构可以抑制集成在同一衬底中的光学器件之间的影响以及对直接连接到衬底的其它光学器件的影响。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2008009302A Optical hybrid integrated circuit 有权
标题翻译：光学混合集成电路
公开(公告)号：JP2008009302A
公开(公告)日：2008-01-17
申请号：JP2006182015
申请日：2006-06-30
申请人： Nippon Telegr & Teleph Corp , Ntt Electornics Corp , Nttエレクトロニクス株式会社 , 日本電信電話株式会社
发明人： OGAWA IKUO , YAMAZAKI YASUSHI , KANEKO AKEMASA , HASHIZUME YASUAKI , TERUI HIROSHI , OMORI YASUJI , NAMEKAWA KAZUICHI , KAWASHIMA KOJI
IPC分类号： G02B6/122 , G02B6/42
摘要： PROBLEM TO BE SOLVED: To improve cross talk by having a structure that does not impair airtightness. SOLUTION: The optical hybrid integrated circuit includes a planar optical waveguide circuit for which an optical waveguide 121 is formed on a substrate and an optical module which is fixed on the planar optical waveguide circuit so that the light receiving face of an optical element is optically coupled to the optical waveguide 121. The optical hybrid integrated circuit is equipped with a mirror groove 102 which is formed on the end face 104 of the optical waveguide 121 deeper than the core thereof and an optical path conversion mirror 111 which is installed inside the mirror groove 102 and which couples the light signal emitted from the end face 104 of the optical waveguide 121 to the light receiving face of the optical element. The optical waveguide 121 is formed such that the core width in the end face 104 of the optical waveguide 121 is different from the core width in the circuit in the planar optical waveguide circuit, and that the flaring angle ψ of the beam in the full width at half maximum of light intensity of the optical signal emitted from the end face of the optical waveguide 121 becomes narrower at least in the substrate surface. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过具有不损害气密性的结构来改善串扰。光混合集成电路包括在基板上形成光波导121的平面光波导电路和固定在平面光波导路径上的光模块，使得光学元件的光接收面光耦合到光波导121.光混合集成电路配备有形成在光波导121的比其核心更深的端面104上的反射镜槽102和安装在光波导121内的光路转换镜111 反射镜槽102，并且将从光波导121的端面104发射的光信号耦合到光学元件的光接收面。光波导121形成为使得光波导121的端面104的芯宽与平面光波导路中的电路的芯宽不同，并且光束的全宽度的扩口角ψ 从光波导121的端面发射的光信号的光强度的最大值至少在基板表面上变窄。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2014059542A Optical multiplexer/demultiplexer 有权
标题翻译：光学多路复用器/解复用器
公开(公告)号：JP2014059542A
公开(公告)日：2014-04-03
申请号：JP2013054098
申请日：2013-03-15
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： GO TAKASHI , HASHIZUME YASUAKI
IPC分类号： G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide a multiplexer/demultiplexer having low loss property, excellent in broadband flatness in a passband, and capable of allowing rotation operation and having a multiport structure.SOLUTION: An optical multiplexer/demultiplexer of the present invention comprises: a (1-N)-staged lattice type two-optical flux interferometer in which an optical coupler and a two-optical path delay circuit having a path length different from that of the optical coupler by integral multiple of M×ΔL/2 are alternately connected with each other in multistage; two pairs of 1×(M/2) optical couplers connected to the interferometer; an M array delay circuit connected to the output of the optical coupler and having path lengths each mutually different by ΔL; and an M×M' optical coupler connected to the delay circuit. The M×M' optical coupler is composed by combination of 2×2 optical couplers of M/2 arrays connected in log(M) stages.
摘要翻译：要解决的问题：提供一种具有低损耗特性的多路复用器/解复用器，通带宽带平坦度优异，并且能够允许旋转操作并具有多端口结构。解决方案：本发明的光复用器/解复用器包括：（1-N）级晶格型双光通量干涉仪，其中具有与光耦合器的路径长度不同于M×＆Dgr; L / 2的整数倍的路径长度的光耦合器和双光路延迟电路是以多级交替连接; 连接到干涉仪的两对1×（M / 2）光耦合器; 连接到光耦合器的输出的M阵列延迟电路，并且具有每个相互不同的路径长度＆Dgr; L; 和连接到延迟电路的M×M'光耦合器。 M×M'光耦合器由以M（M）级连接的M / 2阵列的2×2光耦合器组合构成。

5. 发明专利

JP2012255974A Variable optical buffer circuit and circuit device 有权
标题翻译：可变光学缓冲电路和电路设备
公开(公告)号：JP2012255974A
公开(公告)日：2012-12-27
申请号：JP2011130035
申请日：2011-06-10
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Univ Of Tokyo , 国立大学法人東京大学
发明人： HASHIZUME YASUAKI , MINO SHINJI , NAKANO YOSHIAKI , TANEMURA TAKUO
IPC分类号： G02F1/025 , G02B6/12 , G02B6/122 , G02B6/13 , G02F1/313
摘要： PROBLEM TO BE SOLVED: To reduce the size of a whole circuit of a variable optical buffer circuit, allow the use of simple manufacturing process and manufacturing equipment, and resolve variation in loss between paths.SOLUTION: A variable optical buffer circuit is constituted by connecting an optical switch circuit and a multiplexing circuit formed on a semiconductor substrate, and is integrally formed with delay lines formed in light guides. The multiplexing circuit is constituted of the delay lines formed in the light guides and optical couplers. When using the same delay lines, pairs of the optical couplers and the delay lines connected to one ends of the optical couplers are connected so that the delay lines and the optical couplers alternately continue and constitute an N number of paths. Coupling rates of the respective optical couplers are set for the respective paths based on measured values of minimum loss values when losses excluding losses based on the coupling rates of the optical couplers are made minimum.
摘要翻译：要解决的问题：为了减小可变光缓冲电路的整个电路的尺寸，允许使用简单的制造工艺和制造设备，并且解决路径之间的损耗的变化。解决方案：可变光缓冲电路通过连接光开关电路和形成在半导体衬底上的多路复用电路构成，并与形成在光导中的延迟线整体形成。复用电路由形成在光导和光耦合器中的延迟线构成。当使用相同的延迟线时，连接到光耦合器的一端的光耦合器和延迟线对被连接，使得延迟线和光耦合器交替地继续并且构成N个路径。当基于光耦合器的耦合速率的损失排除损失最小时，基于最小损耗值的测量值，针对相应路径设置各个光耦合器的耦合速率。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2011232458A Phase control circuit 审中-公开
标题翻译：相控电路
公开(公告)号：JP2011232458A
公开(公告)日：2011-11-17
申请号：JP2010101238
申请日：2010-04-26
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： HASHIZUME YASUAKI , KITO TSUTOMU , HIRABAYASHI KATSUHIKO , ITOU MIKITAKA
IPC分类号： G02B6/14 , G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide a phase control circuit which implements a variable optical attenuator having low power consumption and a DPSK reception circuit free from a wavelength shift dependent upon a temperature, and an optical interference circuit using the phase control circuit.SOLUTION: The phase control circuit comprises two mode converters and a plurality of optical waveguides connecting the two mode converters, on a substrate, and grooves filled with a material are provided between or the outside of the plurality of optical waveguides, and thin film heaters are provided above the plurality of optical waveguides or above spaces between the plurality of optical waveguides. A material of which the absolute value of the thermooptical constant is greater than that of the optical waveguides is used as the material filling the grooves or a material around the optical waveguides, whereby the phase control circuit to implement the variable optical attenuator having low power consumption is provided. Furthermore, the phase control circuit and a plurality of phase control circuits having the same structure but having no grooves or no heaters are properly combined to provide the DPSK reception circuit free from a wavelength shift dependent upon a temperature or the optical interference circuit like a wavelength multiplexing/demultiplexing filter.
摘要翻译：要解决的问题：提供一种相位控制电路，其实现具有低功耗的可变光衰减器和不依赖于温度的波长偏移的DPSK接收电路，以及使用该相位控制电路的光干涉电路。解决方案：相位控制电路包括两个模式转换器和在基板上连接两个模式转换器的多个光波导，并且在多个光波导之间或外部设置填充有材料的槽，并且薄薄膜加热器设置在多个光波导之间或多个光波导之间的上述空间之上。使用热光学常数的绝对值大于光波导的绝对值的材料作为填充光波导路周围的沟槽或材料的材料，由此实现具有低功耗的可变光衰减器的相位控制电路被提供。此外，相位控制电路和具有相同结构但没有凹槽或不加热器的多个相位控制电路被适当地组合以提供不依赖于温度的波长偏移的DPSK接收电路或像波长的光学干涉电路复用/解复用滤波器。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2010081106A Distribution monitor system and method; and distribution compensation system and method 有权
标题翻译：分布监测系统和方法; 和分配补偿系统和方法
公开(公告)号：JP2010081106A
公开(公告)日：2010-04-08
申请号：JP2008244894
申请日：2008-09-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： INUI TETSUO , YONENAGA KAZUSHIGE , MORI KUNIHIKO , HASHIZUME YASUAKI
IPC分类号： H04B10/2507 , H04B10/077 , H04B10/079 , H04B10/2513 , H04B10/27 , H04B10/275 , H04B10/29 , H04B10/291 , H04B10/54 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To automatically measure wavelength distribution of respective spans of an optical fiber transmission line in an inline service by a simple method, in a light wavelength multiplex transmission system, and to achieve distribution compensation using a distribution monitor system.
SOLUTION: By collectively superposing tone modulation on a wavelength multiplex signal on a transmission side of a transmission node or a relay node, and dividing a wavelength multiple signal with tone modulation superposed thereon by a tone modulation superposing means on a reception side of the relay node or at a reception node, distribution values of respective wavelength channels are measured from a delay difference of tone signals of the respective wavelength channels. Based on the measured distribution values, a variable distribution compensator is controlled to compensate the distribution values.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过简单的方法，在光波长多路传输系统中自动测量在线服务中的光纤传输线的各个跨度的波长分布，并且使用分布监控系统来实现分配补偿。解决方案：通过在发送节点或中继节点的发送侧上的波长多路复用信号上共同叠加色调调制，并且通过音调调制叠加装置在其接收侧上划分与其上叠加有音调调制的波长多重信号中继节点或接收节点，各个波长信道的分布值根据各个波长信道的音调信号的延迟差来测量。基于测量分布值，控制可变分布补偿器来补偿分布值。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2010057121A Optical transmission apparatus 有权
标题翻译：光传输装置
公开(公告)号：JP2010057121A
公开(公告)日：2010-03-11
申请号：JP2008222541
申请日：2008-08-29
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KUBOTA HIROKAZU , TAKARA HIDEHIKO , YONENAGA KAZUSHIGE , YOSHIMATSU SHUNEI , HASHIZUME YASUAKI
IPC分类号： H03M13/25 , H04B10/524 , H04B10/556
摘要： PROBLEM TO BE SOLVED: To provide an optical transmission apparatus of an encoded transmission system, which improves reception sensitivity and narrows bands for a driver amplifier.
SOLUTION: The optical transmission apparatus includes a trellis encoder 12 for outputting a code (modulation code) from an input value through trellis encoding. For example, the trellis encoder 12 is configured to store one of 2^m states reflecting values of (m) codes before the present, so as to output a code, when one input value is acquired in one state, corresponding to the input value in the state, and to store any other state not corresponding to the code as a present state, so as to output a code, from the present input value, different from the last code output from the last input value.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种编码传输系统的光传输装置，其提高了驱动放大器的接收灵敏度和窄带宽。解决方案：光传输装置包括格栅编码器12，用于通过网格编码从输入值输出代码（调制码）。例如，网格编码器12被配置为存储反映在当前之前的（m）个代码值的2×m个状态中的一个，以便当在一个状态中获取与输入值对应的一个输入值时输出代码并且将与代码不相对应的任何其他状态存储为当前状态，以便从当前输入值输出与最后输入值的最后代码输出不同的代码。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2007025583A Thermooptic phase modulator and its manufacturing method 有权
标题翻译：热电相调制器及其制造方法
公开(公告)号：JP2007025583A
公开(公告)日：2007-02-01
申请号：JP2005211621
申请日：2005-07-21
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： WATANABE HIROSHI , HASHIZUME YASUAKI , INOUE YASUYUKI , ITO MASAYUKI , TAMURA MUNEHISA
IPC分类号： G02F1/01 , G02B6/12 , G02B6/13 , G02F1/313
摘要： PROBLEM TO BE SOLVED: To provide a thermooptic phase modulator with which power consumption is reduced and loss is reduced, and its manufacturing method. SOLUTION: The thermooptic phase modulator is equipped with a cladding 62 containing a core 63 formed on a substrate 61, and heat insulating grooves 65 formed by removing the cladding 62 so as to make their longitudinal directions nearly parallel to a longitudinal direction of the core 63. A direction of a first edge of the heat insulating groove 65 in a region including respective ends on the core 63 side forms a first angle with the longitudinal direction of the core 63 toward the end of the first edge on the side opposite to the core 63. A ridge structure 64 is formed by forming two heat insulating grooves 65 so as to interpose the core 63. A width of the straight line shaped ridge structure 64A is less than a waveguide mode basic mode width of the core in the case of having no heat insulating groove formed, and a width of a region formed with the first edge of the ridge structure 64B with a tapered shape gradually increases as going closer to the end of the first edge. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供降低功耗并降低损耗的光波相位调制器及其制造方法。光波相位调制器配备有包含形成在基板61上的芯63的包层62和通过去除包层62而形成的绝热槽65，以使其纵向几乎平行于纵向方向核心63.在包括芯部63侧的各个端部的区域中，绝热槽65的第一边缘的方向形成与芯部63的纵向方向相反的第一边缘的端部的第一角度通过形成两个绝热槽65以形成芯部63形成脊状结构64。直线状脊部结构64A的宽度小于芯线的波导模式基本模式宽度形成有绝热槽的情况，并且形成有具有锥形形状的脊状结构64B的第一边缘的区域的宽度随着越靠近第一边缘的端部逐渐增加。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2004170657A Waveguide type variable optical attenuator 有权
公开(公告)号：JP2004170657A
公开(公告)日：2004-06-17
申请号：JP2002335990
申请日：2002-11-20
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： HASHIZUME YASUAKI , INOUE YASUYUKI , SAIDA TAKASHI , SHIBATA TOMOHIRO
IPC分类号： G02F1/01 , G02F1/313
摘要： PROBLEM TO BE SOLVED: To provide a waveguide type variable optical attenuator which does not lower productivity and which has little polarization dependent loss. SOLUTION: An optical waveguide 101 constitutes a Mach-Zehnder interferometer using two directional couplers 102, 102. At the same time, a thin film heater 104 to vary the phase of light by a thermo-optical effect is disposed on the upper face of the optical waveguide 101. Furthermore, part of an arm optical waveguide 109, which is one out of two arm optical waveguides 108, 109 being the optical waveguides between the two directional couplers 102, 102, is made to be a waveguide 107 of a larger width so as to adjust the birefringence of the arm optical waveguide 109 to a specified value. COPYRIGHT: (C)2004,JPO

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