公开(公告)号：US20070031146A1

公开(公告)日：2007-02-08

申请号：US11580568

申请日：2006-10-12

申请人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

发明人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

IPC分类号： H04B10/00

CPC分类号： H04J14/029 ,  H04B10/271 ,  H04B10/272 ,  H04B10/2755 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0086

摘要： An optical wavelength division multiplexing network has a multi-level structure where a plurality of optical network units (ONUs) are connected to a lowest-level network. A node apparatus connected to networks other than the lowest-level network includes (a) passive optical components to branch optical signals from a higher-level network to a lower-level network, and couple optical signals from the lower-level network to the higher-level network, and (b) optical amplifiers for the optical signals. A node apparatus connected to the lowest-level network includes (a) an optical multiplexer/de-multiplexer to de-multiplex optical signals from the higher-level network, selectively output an optical signal to each ONU, and multiplex wave-length specific optical signals from the ONUs into a multiplexed optical signal, and (b) optical amplifiers for the optical signals. The node apparatuses provide an optical communication path between the higher-level network and the lower-level (or lowest-level) network without converting the optical signals into electrical signals.

摘要翻译： 光波分复用网络具有多层结构，其中多个光网络单元（ONU）连接到最低级网络。 连接到除了最低级网络之外的网络的节点装置包括（a）无源光学部件，以将来自上级网络的光信号分支到较低级网络，以及将来自下级网络的光信号耦合到较高级网络 （b）用于光信号的光放大器。 连接到最低级网络的节点装置包括：（a）用于对来自上级网络的光信号进行解复用的光复用器/去多路复用器，选择性地向每个ONU输出光信号，并且复用波长特定光 从ONU到多路复用光信号的信号，以及（b）用于光信号的光放大器。 节点装置在高级网络和下级（或最低级别）网络之间提供光通信路径，而不将光信号转换成电信号。

公开(公告)号：US07164861B2

公开(公告)日：2007-01-16

申请号：US09785402

申请日：2001-02-20

申请人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

发明人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

IPC分类号： H04J14/00

CPC分类号： H04J14/029 ,  H04B10/271 ,  H04B10/272 ,  H04B10/2755 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0086

摘要： An optical wavelength division multiplexing network which can carry out large-capacity access service with a simple constitution is provided. In an optical network comprising a plurality of layers, a highest level network comprises a ring network having a center node and remote nodes; an intermediate level network comprises a ring centered around a node belonging to the higher level network, and a lowest level network comprises a star network centered around an access node which multiplexes traffic from a plurality of ONU, the ONU and the access node being directly joined together by optical fibers; the center node belonging to the highest level network and the ONU establish a direct communication path by using lights of different wavelengths; at nodes provided therebetween, the optical signals are not electrically processed but are amplified, branched, and routed.

摘要翻译： 提供了一种能够以简单的结构进行大容量接入服务的光波分复用网络。 在包括多个层的光网络中，最高级网络包括具有中心节点和远程节点的环网; 中间级网络包括以属于较高级网络的节点为中心的环，最低级网络包括以多路复用来自多个ONU的业务的接入节点为中心的星形网络，所述ONU和接入节点直接相连 一起用光纤; 属于最高级网络的中心节点和ONU通过使用不同波长的光线建立直接通信路径; 在其间设置的节点处，光信号不是电处理的，而是被放大，分支和布线。

公开(公告)号：US07433594B2

公开(公告)日：2008-10-07

申请号：US11580568

申请日：2006-10-12

申请人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

发明人： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

IPC分类号： H04B10/00

CPC分类号： H04J14/029 ,  H04B10/271 ,  H04B10/272 ,  H04B10/2755 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0086

摘要： An optical wavelength division multiplexing network has a multi-level structure where a plurality of optical network units (ONUs) are connected to a lowest-level network. A node apparatus connected to networks other than the lowest-level network includes (a) passive optical components to branch optical signals from a higher-level network to a lower-level network, and couple optical signals from the lower-level network to the higher-level network, and (b) optical amplifiers for the optical signals. A node apparatus connected to the lowest-level network includes (a) an optical multiplexer/de-multiplexer to de-multiplex optical signals from the higher-level network, selectively output an optical signal to each ONU, and multiplex wave-length specific optical signals from the ONUs into a multiplexed optical signal, and (b) optical amplifiers for the optical signals. The node apparatuses provide an optical communication path between the higher-level network and the lower-level (or lowest-level) network without converting the optical signals into electrical signals.

摘要翻译： 光波分复用网络具有多层结构，其中多个光网络单元（ONU）连接到最低级网络。 连接到除了最低级网络之外的网络的节点装置包括（a）无源光学部件，以将来自上级网络的光信号分支到较低级网络，以及将来自下级网络的光信号耦合到较高级网络 （b）用于光信号的光放大器。 连接到最低级网络的节点装置包括：（a）用于对来自上级网络的光信号进行解复用的光复用器/去多路复用器，选择性地向每个ONU输出光信号，并且复用波长特定光 从ONU到多路复用光信号的信号，以及（b）用于光信号的光放大器。 节点装置在高级网络和下级（或最低级别）网络之间提供光通信路径，而不将光信号转换成电信号。

公开(公告)号：US6157025A

公开(公告)日：2000-12-05

申请号：US174724

申请日：1998-10-19

申请人： Yoshitada Katagiri ,  Yoshiaki Tachikawa ,  Shinji Nagaoka ,  Fumikazu Ohira ,  Kazuo Aida ,  Ken-ichi Suzuki ,  Hiroshi Abe ,  Shingo Kawai ,  Hitoshi Obara

发明人： Yoshitada Katagiri ,  Yoshiaki Tachikawa ,  Shinji Nagaoka ,  Fumikazu Ohira ,  Kazuo Aida ,  Ken-ichi Suzuki ,  Hiroshi Abe ,  Shingo Kawai ,  Hitoshi Obara

IPC分类号： G02B6/34 ,  G02B7/00 ,  G02B26/00 ,  G02B27/44 ,  H01J40/14

CPC分类号： G02B6/4246 ,  G02B26/008 ,  G02B27/4244 ,  G02B6/29361 ,  G02B6/29395 ,  G02B5/20 ,  G02B6/2937 ,  G02B7/006

摘要： A disk shaped tunable optical filter is formed by a transparent substrate in a disk shape, and a filter layer formed on a top surface of the substrate, having such a filter characteristic that a transmission central wavelength varies along a circumferential direction as a monotonic function of a viewing angle. This disk shaped tunable optical filter can be advatageously utilized in realizing a wavelength discrimination apparatus, a reference wavelength light generation apparatus, an optical packet generation apparatus, and a tunable optical filter module, which are also disclosed.

摘要翻译： 盘状可调谐滤光器由盘状的透明基板和形成在基板的顶面上的滤光层形成，该滤光片具有透光中心波长沿圆周方向变化的滤光器特性，作为单调功能 视角。 这种盘形可调光滤波器可以被广泛地用于实现波长鉴别装置，参考波长发光装置，光分组产生装置和可调光滤波器模块。

公开(公告)号：US5617234A

公开(公告)日：1997-04-01

申请号：US531980

申请日：1995-09-21

申请人： Masafumi Koga ,  Mitsuhiro Teshima ,  Hitoshi Obara ,  Ken'ichi Sato

发明人： Masafumi Koga ,  Mitsuhiro Teshima ,  Hitoshi Obara ,  Ken'ichi Sato

IPC分类号： G02B6/12 ,  G02B6/34 ,  H04B10/50 ,  H04B10/572 ,  H04S14/02

CPC分类号： H04B10/506 ,  G02B6/12011 ,  G02B6/12019 ,  G02B6/12033 ,  H04B10/572 ,  G02B2006/12135

摘要： A multiwavelength simultaneous monitoring circuit capable of precise discrimination of wavelengths of a WDM (Wavelength Division Multiplexed) signal including multiplexed wavelength waves, and suitable for optical integrated circuits having large resistance to vibration. It includes a reference optical source, an AWG (Arrayed-waveguide grating) having periodic center transmission wavelength (or crossover wavelengths) corresponding to the wavelength spacing between multiplexed waves of the WDM signal, a first wavelength error detector for generating a wavelength error signal of an RF signal (reference optical signal) with respect to a zero-cross wavelength on the basis of a ratio between the levels of the RF signal outputted from two output waveguides of the AWG, a control circuit for locking the zero-cross wavelength to the wavelength of the RF signal in response to the wavelength error signal, and a second wavelength error detector for generating wavelength error signals of the multiplexed waves of the WDM signal by detecting signal levels of respective wavelength signals of the WDM signal outputted from each pair of output ports of the AWG.

摘要翻译： 一种多波长同时监视电路，其能够精确地区分包括复用波长波的WDM（波分复用）​​信号的波长，并且适用于具有较大阻抗的光学集成电路。 它包括参考光源，具有对应于WDM信号的复用波之间的波长间隔的周期性中心透射波长（或交越波长）的AWG（阵列波导光栅），第一波长误差检测器，用于产生波长误差信号 基于从AWG的两个输出波导输出的RF信号的电平之间的比率，相对于零交叉波长的RF信号（参考光信号），用于将零交叉波长锁定到 响应于波长误差信号的RF信号的波长;以及第二波长误差检测器，用于通过检测从每对输出输出的WDM信号的各个波长信号的信号电平来产生WDM信号的复用波的波长误差信号 特设工作组的港口。

公开(公告)号：US08059640B2

公开(公告)日：2011-11-15

申请号：US12521114

申请日：2007-12-20

申请人： Hitoshi Obara ,  Masato Sakata

发明人： Hitoshi Obara ,  Masato Sakata

IPC分类号： H04L12/50

CPC分类号： H04L49/1515 ,  H04L49/254

摘要： A multistage switch control circuit allows unit switches to be set at a higher speed than conventional multistage switch control circuits. Higher-order half first and second control elements are connected to a first section of a bus to form a first cluster, while lower-order half third and fourth control elements are connected to a second section of the bus to form a second cluster. A bus switch which functions as a cluster formation means is arranged between the first section and the second section of the bus to perform the connection/separation of the first section and the second section. The first to fourth control elements transmit switch control signals to corresponding unit switches, respectively, in each stage.

摘要翻译： 多级开关控制电路允许单元开关设置在比传统多级开关控制电路更高的速度。 高阶半第一和第二控制元件连接到总线的第一部分以形成第一簇，而低阶半第三和第四控制元件连接到总线的第二部分以形成第二簇。 用作集群形成装置的总线开关布置在总线的第一部分和第二部分之间，以执行第一部分和第二部分的连接/分离。 第一至第四控制元件分别在每个级中将开关控制信号发送到相应的单元开关。

公开(公告)号：US20100098070A1

公开(公告)日：2010-04-22

申请号：US12521114

申请日：2007-12-20

申请人： Hitoshi Obara ,  Masato Sakata

发明人： Hitoshi Obara ,  Masato Sakata

IPC分类号： H04L12/50

CPC分类号： H04L49/1515 ,  H04L49/254

摘要： A multistage switch control circuit allows unit switches to be set at a higher speed than conventional multistage switch control circuits. Higher-order half first and second control elements are connected to a first section of a bus to form a first cluster, while lower-order half third and fourth control elements are connected to a second section of the bus to form a second cluster. A bus switch which functions as a cluster formation means is arranged between the first section and the second section of the bus to perform the connection/separation of the first section and the second section. The first to fourth control elements transmit switch control signals to corresponding unit switches, respectively, in each stage.

摘要翻译： 多级开关控制电路允许单元开关设置在比传统多级开关控制电路更高的速度。 高阶半第一和第二控制元件连接到总线的第一部分以形成第一集群，而低阶半部分第三和第四控制元件连接到总线的第二部分以形成第二集群。 用作集群形成装置的总线开关布置在总线的第一部分和第二部分之间，以执行第一部分和第二部分的连接/分离。 第一至第四控制元件分别在每个级中将开关控制信号发送到相应的单元开关。

公开(公告)号：US5696623A

公开(公告)日：1997-12-09

申请号：US216962

申请日：1994-03-24

申请人： Nobuo Fujie ,  Hitoshi Obara ,  Keiji Kuroiwa ,  Masaki Nakamura ,  Kazuya Watanabe ,  Takashi Aruga ,  Nobutaka Horii ,  Motokazu Suzuki ,  Tadahiro Hayashi

发明人： Nobuo Fujie ,  Hitoshi Obara ,  Keiji Kuroiwa ,  Masaki Nakamura ,  Kazuya Watanabe ,  Takashi Aruga ,  Nobutaka Horii ,  Motokazu Suzuki ,  Tadahiro Hayashi

IPC分类号： G02B13/14 ,  G03F7/20 ,  G03F7/00 ,  G02B27/00 ,  H01L21/30

CPC分类号： G03F7/70933 ,  G02B13/143 ,  G03F7/70058 ,  G03F7/70241 ,  G03F7/70883 ,  G03F7/70891 ,  Y10S359/90

摘要： In an ultraviolet exposure apparatus, substances contained in an atmosphere contacting a lens surface are reduced, the substances generating accumulations on the lens surface. Openings are formed in the wall of a lens barrel to allow the atmosphere to be replaced by a proper gas. The proper atmospheric gas may be a gas not containing oxygen such as a nitrogen gas, or clean air obtained by intentionally generating accumulations by applying ultraviolet light to source air. A ultraviolet light source is preferably cooled by a cooling system different from the cooling system of a lens optical system.

摘要翻译： 在紫外线曝光装置中，与透镜面接触的气氛中所含的物质减少，在透镜表面产生积聚的物质。 开口形成在镜筒的壁中，以允许气体被适当的气体代替。 适当的大气气体可以是不含氧的气体，例如氮气，或者是通过向源空气施加紫外线而有意地产生积聚而获得的清洁空气。 紫外光源优选通过与透镜光学系统的冷却系统不同的冷却系统来冷却。