公开(公告)号：US06644870B2

公开(公告)日：2003-11-11

申请号：US10103134

申请日：2002-03-22

申请人： Noriko Iwata ,  Takatoshi Kato ,  Keiichiro Fukuda

发明人： Noriko Iwata ,  Takatoshi Kato ,  Keiichiro Fukuda

IPC分类号： G02B6255

CPC分类号： G02B6/2551 ,  G02B6/02004 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/2552 ,  G02B6/29377

摘要： The present invention relates to an optical fiber transmission line having a structure offering superior connection loss characteristics at the fusion-spliced position between optical fibers. This optical fiber transmission line has at least first and second optical fibers that are fusion-spliced. Each of these first and second optical fibers has a core region doped with 10 mol % or more of Ge and has a mode field diameter with a minimum value of 7 &mgr;m or less at the wavelength of 1550 nm. The difference between the minimum mode diameter of the first optical fiber and that of the second optical fiber is 1 &mgr;m or less.

摘要翻译： 本发明涉及一种具有在光纤之间的熔接位置提供优异的连接损耗特性的结构的光纤传输线。 该光纤传输线至少具有熔接的第一和第二光纤。 这些第一和第二光纤中的每一个具有掺杂有10mol％以上的Ge的芯区域，并且在1550nm的波长下具有最小值为7μm或更小的模场直径。 第一光纤的最小模式直径与第二光纤的最小模式直径的差为1um或更小。

公开(公告)号：US06275638B1

公开(公告)日：2001-08-14

申请号：US09297465

申请日：1999-04-28

申请人： Eisuke Sasaoka ,  Takatoshi Kato ,  Yoshio Yokoyama ,  Akira Urano

发明人： Eisuke Sasaoka ,  Takatoshi Kato ,  Yoshio Yokoyama ,  Akira Urano

IPC分类号： G02B622

CPC分类号： G02B6/02238 ,  G02B6/02014 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633

摘要： A dispersion-shifted fiber includes structure configured to effectively reduce nonlinear optical effects and transmission loss caused by structural mismatching. A core region in the dispersion-shifted fiber includes an inner core and an outer core, which are both glass areas. The inner core is doped with a predetermined amount of fluorine, having an average relative refractive index difference &Dgr;n1. The outer core is disposed between the inner core and the cladding region and is doped with a predetermined amount of germanium dioxide, having an average relative refractive index difference &Dgr;n2(&Dgr;n2>&Dgr;n1), such that the viscosity ratio between the inner core and the outer core at a drawing temperature is set within a predetermined range, thereby effectively restraining structural mismatching from occurring at the boundary between these glass regions.

摘要翻译： 色散位移光纤包括有效地减少由结构不匹配引起的非线性光学效应和传输损耗的结构。 色散位移光纤中的核心区域包括两个玻璃区域的内芯和外芯。 内核掺杂有预定量的氟，具有平均相对折射率差ΔTATAn1。 外芯设置在内芯和包层区之间，并掺杂预定量的具有平均相对折射率差DELTAn2（DELTAn2> DELTAn1）的二氧化锗，使得内芯和外层之间的粘度比 芯在拉伸温度下设定在预定范围内，从而有效地抑制在这些玻璃区域之间的边界处发生结构失配。

公开(公告)号：US06262641B1

公开(公告)日：2001-07-17

申请号：US09326202

申请日：1999-06-04

申请人： Takatoshi Kato ,  Koichi Sakamoto ,  Atsushi Saitoh

发明人： Takatoshi Kato ,  Koichi Sakamoto ,  Atsushi Saitoh

IPC分类号： H03H738

CPC分类号： H03B19/14

摘要： In a dielectric transmission line device and a radio device using a dielectric transmission line device, an output matching circuit is constructed in a simplified fashion and an output signal of a frequency multiplier is output via a dielectric transmission line. The frequency multiplier is constructed in a small form in the dielectric transmission line device so as to obtain a dielectric transmission line device with a small total size and also obtain a small-sized high-efficiency radio device using such a dielectric transmission line device as a transmission line for transmitting a transmission signal. An input matching circuit is disposed between an input terminal and an FET for generating a harmonic. An open-ended transmission line is also provided which is coupled with an electromagnetic field of a dielectric transmission line in the form of a dielectric strip.

摘要翻译： 在介质传输线装置和使用电介质传输线装置的无线电装置中，以简化的方式构成输出匹配电路，经由介质传输线输出倍频器的输出信号。 在介质传输线路器件中以倍频器的形式构造倍频器，以获得总体尺寸小的介质传输线路器件，并且还可以获得使用这样的介质传输线路器件的小型高效无线电设备 用于发送发送信号的传输线。 输入匹配电路设置在输入端子和用于产生谐波的FET之间。 还提供了开口传输线，其与介质条形式的电介质传输线的电磁场耦合。

公开(公告)号：US06256440B1

公开(公告)日：2001-07-03

申请号：US09586966

申请日：2000-06-05

申请人： Takatoshi Kato ,  Eisuke Sasaoka ,  Masayuki Nishimura

发明人： Takatoshi Kato ,  Eisuke Sasaoka ,  Masayuki Nishimura

IPC分类号： G02B616

CPC分类号： G02B6/02014 ,  G02B6/02238 ,  G02B6/02252 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03644

摘要： The present invention relates to a dispersion-shifted optical fiber suitable for an optical transmission line having an optical fiber amplifier with a wider amplification band. In particular, the dispersion-shifted optical fiber according to the present invention has a zero-dispersion wavelength of 1610 nm or more but 1750 nm or less, and a cutoff wavelength of 1.1 &mgr;m or more at a length of 2 m in order to suppress the bending loss to a practically permissible range, and has, with respect to light having a wavelength of 1550 nm, an effective area of 45 &mgr;m2 or more and a dispersion slope of 0.15 ps/nm2/km or less in order to suppress the occurrence of nonlinear phenomena.

摘要翻译： 本发明涉及一种适用于具有宽放大频带的光纤放大器的光传输线的色散位移光纤。 特别地，根据本发明的色散位移光纤具有1610nm以上但1750nm以下的零色散波长，在2μm的长度下的截止波长为1.1μm以上，以抑制 弯曲损耗达到实际允许的范围，并且对于波长为1550nm的光，为了抑制发生，有效面积为45mum2以上，色散斜率为0.15ps / nm2 / km以下 的非线性现象。

公开(公告)号：US5913005A

公开(公告)日：1999-06-15

申请号：US15505

申请日：1998-01-29

申请人： Yoshiaki Terasawa ,  Takatoshi Kato ,  Fumiyoshi Ohkubo ,  Yosuke Yamazaki

发明人： Yoshiaki Terasawa ,  Takatoshi Kato ,  Fumiyoshi Ohkubo ,  Yosuke Yamazaki

IPC分类号： G02B6/028 ,  G02B6/036 ,  G02B6/18

CPC分类号： G02B6/02009 ,  G02B6/02238 ,  G02B6/0286 ,  G02B6/03633

摘要： The present invention relates to an S-mode optical fiber having a structure which can effectively restrain dispersion slope from increasing. In this S-mode optical fiber, an optical core is constituted by inner and outer cores, while an optical cladding is constituted by an inner cladding in which "tailing" occurs and an outer cladding. In a cross section of the S-mode optical fiber perpendicular to its signal light propagating direction, when surface integral values of relative refractive index difference with respect to a reference region having an average refractive index n.sub.0 are S1 and S2 in the optical cladding and optical core, respectively, the S-mode optical fiber is designed to satisfy a relationship of 0

摘要翻译： 本发明涉及具有能够有效地抑制色散斜率增加的结构的S模式光纤。 在该S模式光纤中，光纤芯由内芯和外芯构成，而光学包层由发生“拖尾”的内包层和外包层构成。 在垂直于其信号光传播方向的S模式光纤的横截面中，当相对于平均折射率n0的参考区域的相对折射率差的表面积分值在光学包层和光学器件中为S1和S2时 核心，S模式光纤被设计为满足0

公开(公告)号：US5822488A

公开(公告)日：1998-10-13

申请号：US725903

申请日：1996-10-04

申请人： Yoshiaki Terasawa ,  Yuji Takahashi ,  Takatoshi Kato

发明人： Yoshiaki Terasawa ,  Yuji Takahashi ,  Takatoshi Kato

IPC分类号： C03B37/012 ,  C03B37/014 ,  C03B37/027 ,  G02B6/036 ,  G02B6/02

CPC分类号： G02B6/0365 ,  C03B37/01211 ,  C03B37/01413 ,  C03B37/027 ,  G02B6/02238 ,  G02B6/0228 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03644 ,  C03B2203/22 ,  C03B2203/29 ,  G02B6/02004 ,  G02B6/02009

摘要： The present invention relates to a single-mode optical fiber having a configuration which enables lowering of dispersion slope while securing a sufficient MFD. This single-mode optical fiber has a refractive index profile in which an indent with a sufficient width is provided at the center of its core region. In particular, this indent satisfies the following relationship: a.multidot.(.DELTA.n.sub.2 -.DELTA.n.sub.1)/(b.multidot..DELTA.n.sub.2).gtoreq.0.04 when the first core portion in the single-mode optical fiber has a mean relative refractive index difference of .DELTA.n.sub.1 with respect to the cladding portion and an outer diameter of a while the second core portion has a mean relative refractive index difference of .DELTA.n.sub.2 with respect to the cladding portion and an outer diameter of b.

摘要翻译： 本发明涉及具有能够在确保足够的MFD的同时降低色散斜率的结构的单模光纤。 该单模光纤具有折射率分布，其中具有足够宽度的凹口设置在其核心区域的中心。 特别地，当单模光纤中的第一芯部具有DELTA n1的平均相对折射率差时，该凹痕满足以下关系：ax（DELTA n2- DELTA n1）/（bx DELTA n2）> / = 0.04 相对于包层部分和外径，第二纤芯部分具有相对于包层部分的DELTA n2的平均相对折射率差和b的外径。

公开(公告)号：US5793949A

公开(公告)日：1998-08-11

申请号：US623681

申请日：1996-03-29

申请人： Kenichi Yusuki ,  Kenji Hoshi ,  Kiyoshi Sudo ,  Takatoshi Kato

发明人： Kenichi Yusuki ,  Kenji Hoshi ,  Kiyoshi Sudo ,  Takatoshi Kato

IPC分类号： G06F13/14 ,  G06F11/07 ,  G06F13/00 ,  G06F13/36 ,  G06F11/00

CPC分类号： G06F11/0745 ,  G06F11/0703

摘要： There is provided an information processing device having information processing units between which data can be transferred via a bus provided therebetween. A data requested unit which is one of the information processing units sends an answering signal to a data requesting unit which is another one thereof. The information processing device includes an error detecting part for detecting an error in received data, an answering signal generating part for generating an error answering signal with respect to received data having an error and a normality answering signal with respect to received data having no error, and an information sending part for sending the error answering signal to the bus with priority over the normality answering signal.

摘要翻译： 提供了一种具有信息处理单元的信息处理设备，其间可以经由其间设置的总线传送数据。 作为信息处理单元之一的数据请求单元将应答信号发送到作为其另一个的数据请求单元。 信息处理装置包括用于检测接收数据中的错误的错误检测部分，用于相对于没有错误的接收数据具有错误和正常应答信号的接收数据产生错误应答信号的应答信号产生部分， 以及信息发送部件，用于以比正常应答信号优先地向总线发送错误应答信号。

公开(公告)号：US5721800A

公开(公告)日：1998-02-24

申请号：US785837

申请日：1997-01-15

申请人： Takatoshi Kato ,  Yoshiyuki Suetsugu ,  Masayuki Nishimura

发明人： Takatoshi Kato ,  Yoshiyuki Suetsugu ,  Masayuki Nishimura

IPC分类号： C03C13/04 ,  G02B6/00 ,  G02B6/10

CPC分类号： G02B6/02009 ,  G02B6/02285 ,  G02B6/03633 ,  G02B6/0365 ,  G02B6/02276

摘要： The present invention relates to a dispersion-shifted fiber having a structure for effectively lowering polarization-mode dispersion. This dispersion-shifted fiber is a single-mode optical fiber mainly composed of silica glass and has a zero-dispersion wavelength set within the range of at least 1.4 .mu.m but not longer than 1.7 .mu.m. In particular, at least the whole core region of the dispersion-shifted fiber contains fluorine.

摘要翻译： 本发明涉及一种具有有效降低偏振模色散的结构的色散位移光纤。 该色散位移光纤是主要由石英玻璃构成的单模光纤，其零色散波长设定在1.4μm以上且不大于1.7μm的范围内。 特别地，色散位移光纤的至少整个核心区域含有氟。

公开(公告)号：US5521403A

公开(公告)日：1996-05-28

申请号：US417894

申请日：1995-04-06

申请人： Masanori Usui ,  Takatoshi Kato ,  Hiroyuki Kano ,  Tadashi Shibata

发明人： Masanori Usui ,  Takatoshi Kato ,  Hiroyuki Kano ,  Tadashi Shibata

IPC分类号： H01L21/285 ,  H01L21/338 ,  H01L29/812 ,  H01L31/0328 ,  H01L31/0336

CPC分类号： H01L29/8122 ,  H01L21/28575

摘要： A field-effect transistor includes a semi-insulating substrate, a semiconductor layer consisting of successive layers of GaAs compound semiconductor formed on the substrate, a gate electrode forming a Schottky contact with the semiconductor layer, and source and drain electrodes each forming an ohmic contact to the semiconductor layer. A semiconductor layer includes a buffer layer, an active layer, and a contact layer, where the impurity concentration in the contact layer is substantially equal to that in the active layer at the interface therewith. The impurity concentration in the contact layer increases continuously from the interface toward the upper surface of the contact layer. The field-effect transistor achieves a reduction in the ON resistance and an increase in the gate breakdown voltage at the same time, and to reduce power loss and increase efficiency.

摘要翻译： 场效应晶体管包括半绝缘衬底，由衬底上形成的连续的GaAs化合物半导体层构成的半导体层，与半导体层形成肖特基接触的栅电极以及各自形成欧姆接触的源极和漏极 到半导体层。 半导体层包括缓冲层，有源层和接触层，其中接触层中的杂质浓度基本上等于与其界面处的有源层中的杂质浓度。 接触层中的杂质浓度从界面向接触层的上表面连续增加。 场效应晶体管同时实现导通电阻的降低和栅极击穿电压的提高，并且降低功率损耗并提高效率。

公开(公告)号：US08606935B2

公开(公告)日：2013-12-10

申请号：US12396157

申请日：2009-03-02

申请人： Kazushi Nakagawa ,  Takatoshi Kato ,  Hiromi Isokawa

发明人： Kazushi Nakagawa ,  Takatoshi Kato ,  Hiromi Isokawa

IPC分类号： G06F15/16

CPC分类号： H04L63/08 ,  H04L63/0884 ,  H04L67/02 ,  H04L67/142

摘要： An application distribution control system is made up of an information processing apparatus including a data collecting part that collects and stores data of a use state when using an application of an application distribution server into a memory and a data moving part that moves the use state data to a client terminal; the client terminal including a data setting part that receives the use state data from the information processing apparatus to set a use state of the application in accordance with the use state data and a request transmitting part that transmits a use request for the application to the application distribution server; and the application distribution server including a service providing part that receives the use request for the application from the client terminal to allow for the use of the application through the network.

摘要翻译： 一种应用分发控制系统由信息处理设备构成，该信息处理设备包括数据收集部件，该数据收集部件在将应用分发服务器的应用程序应用于存储器时收集并存储使用状态的数据;以及数据移动部件，其使用状态数据 到客户端; 所述客户端包括数据设定部，所述数据设定部接收来自所述信息处理装置的使用状态数据，以根据所述使用状态数据设定所述应用的使用状态;以及请求发送部，其向所述应用发送所述应用的使用请求 分发服务器; 所述应用分发服务器包括服务提供部，所述服务提供部从所述客户终端接收所述应用的使用请求，以允许通过所述网络使用所述应用。