公开(公告)号：US08385743B2

公开(公告)日：2013-02-26

申请号：US09781564

申请日：2001-02-13

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H04J14/02

CPC分类号： H04B10/296 ,  H04J14/0221

摘要： Signal wavelengths λ1, λ2, λ3 of signal light components multiplexed at signal multiplexing sections 31, 41, 51 of multiplexing stations 3, 4, 5 installed on the input end side of an EDFA 2 on an optical transmission line 1 are set such that the wavelength-dependent noise figure of EDFA 2 successively decreases from the signal wavelength λ1 multiplexed at the signal multiplexing section 31 closest to the input end of EDFA 2 to λ2 and λ3. On the other hand, the transmission length of individual signal light component before being fed into the EDFA 2 is the shortest in the signal light component at λ1 and successively increases at λ2 and λ3. Thus, the order of magnitude of input signal light power is the same as the order of highness of noise figure in EDFA 2, whereby fluctuations in S/N ratio in the resulting amplified light are reduced.

摘要翻译： 信号光分量的信号波长λ1，λ2，λ3被复用在安装在光传输线路1上的EDFA2的输入端侧的复用站3,4,5的信号多路复用部分31,41,51处， EDFA2的与波长相关的噪声系数从最靠近EDFA2的信号复用部分31多路复用的信号波长λ1连续减小到λ2和λ3。 另一方面，馈送到EDFA2中的各个信号光分量的发送长度在λ1的信号光分量中最短，并且在λ2和λ3处依次增加。 因此，输入信号光功率的数量级与EDFA2中的噪声系数高的顺序相同，从而降低了所得放大的光的S / N比的波动。

公开(公告)号：US08974666B2

公开(公告)日：2015-03-10

申请号：US12681281

申请日：2007-10-02

申请人： Yutaka Kono ,  Masayuki Nishimura ,  Bob Boughtflower ,  Przemyslaw Stasica

发明人： Yutaka Kono ,  Masayuki Nishimura ,  Bob Boughtflower ,  Przemyslaw Stasica

IPC分类号： B01D15/20 ,  B01D15/24

CPC分类号： B01D15/203 ,  B01D15/20 ,  B01D15/24

摘要： A solution containing a target compound is passed through a trap column (14) to capture the target compound in the column (14). Thereafter, wash water is introduced in the trap column (14). Then, the setting of a six-port valve (7) is changed and an on/off valve (6) is opened to introduce nitrogen gas through a supply-side passage (8) in the trap column (14). In this stage, the nitrogen gas is warmed by means of a heat-exchange block (10), and the trap column (14) is warmed via a column rack (15). Any water remaining in the trap column (14) is initially thrust upwards by the nitrogen gas, to be extruded from an exit edge (14b) and discharged through a discharge-side passage (20). Furthermore, any water adhering to adsorbent or the inner wall surface of the trap column (14) is quickly vaporized and carried away by the nitrogen gas. In this manner, any water remaining in the trap column (14) can be rapidly removed, so that no water will be included in an eluate in the subsequent stage where a solvent with a strong elution power is introduced into the trap column (14) to collect the eluate. Thus, the eluate is rapidly vaporized and dried, so that the target compound in solid forms can be efficiently collected.

摘要翻译： 含有目标化合物的溶液通过捕集塔（14）以捕获柱（14）中的目标化合物。 此后，将洗涤水引入捕集塔（14）中。 然后，改变六口阀（7）的设定，开通开闭阀（6），将氮气通过捕集塔（14）内的供给侧通路（8）引入。 在这个阶段，氮气通过热交换块（10）加热，并且捕集塔（14）通过柱架（15）加热。 残留在捕集塔（14）中的任何水最初被氮气向上推动，从出口边缘（14b）挤出并通过排放侧通道（20）排出。 此外，附着于吸附剂或捕集塔（14）的内壁表面的任何水都被氮气迅速气化并带走。 以这种方式，可以快速除去残留在捕集塔（14）中的任何水，使得在后续阶段，洗脱液中不会含有水，其中具有强洗脱力的溶剂被引入捕集塔（14） 收集洗脱液。 因此，洗脱液迅速蒸发并干燥，从而可以有效地收集固体形式的目标化合物。

公开(公告)号：US20090108700A1

公开(公告)日：2009-04-30

申请号：US12262807

申请日：2008-10-31

申请人： Masafumi Sakuma ,  Tomohiro Fukushima ,  Masayuki Nishimura

发明人： Masafumi Sakuma ,  Tomohiro Fukushima ,  Masayuki Nishimura

IPC分类号： H02K1/16

CPC分类号： H02K1/185

摘要： A motor includes a stator, a case and a supporting portion. The stator formed by laminating plural disc plates includes a yoke portion having a plurality of first and second portions alternately formed in a circumferential direction of the stator, and plural tooth portions respectively radially protruding from an inner circumferential surface the yoke portion at the second portion of the yoke portion towards an axial center of the stator. The case provided at an outer circumference of the stator includes a first communicating passage extending in an axial direction of the stator to be in communication with both axial ends of the stator and defined by an inner circumferential surface of the case. The supporting portion protrudes from an inner circumferential surface of the first communicating passage towards the stator and contacts an outer surface of the stator at one of the first portions of the stator.

摘要翻译： 电动机包括定子，壳体和支撑部分。 通过层叠多个盘片而形成的定子包括：磁轭部，其具有在定子的圆周方向上交替形成的多个第一和第二部分，以及分别从第二部分的轭部的内周面径向突出的多个齿部 轭部朝向定子的轴向中心。 设置在定子的外周的壳体包括：第一连通通道，其沿着定子的轴向方向延伸，以与定子的两个轴向端部连通并且由壳体的内周面限定。 所述支撑部从所述第一连通路的内周面朝向所述定子突出，并且在所述定子的所述第一部分之一处与所述定子的外表面接触。

公开(公告)号：US06952309B1

公开(公告)日：2005-10-04

申请号：US09667576

申请日：2000-09-22

申请人： Tetsufumi Tsuzaki ,  Masayuki Nishimura ,  Masayuki Shigematsu ,  Hitoshi Hatayama ,  Eisuke Sasaoka

发明人： Tetsufumi Tsuzaki ,  Masayuki Nishimura ,  Masayuki Shigematsu ,  Hitoshi Hatayama ,  Eisuke Sasaoka

IPC分类号： G02F1/01 ,  G02F1/313 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13

CPC分类号： H01S3/06758 ,  H01S3/06754 ,  H01S3/10007 ,  H01S3/10023 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/2941 ,  H04B10/2942 ,  H04B10/296

摘要： A optical filter has a loss spectrum whose gradient dL/dλ of a loss L (dB) with respect to the wavelength λ (nm) is variable in the wavelength band of multiplexed signal light. A control circuit detects each power of signal light components demultiplexed by an optical coupler and controls the power of optical pumping light to be supplied to an optical amplification section from an optical pumping light sources such that the power of output signal light has a predetermined target value. The control circuit also controls the gradient dL/dλ of the optical filter on the basis of powers of the signal light components.

摘要翻译： 滤光器具有损耗谱，其相对于波长λ（nm）的损耗L（dB）的梯度dL /dlλ在复用信号光的波长带中是可变的。 控制电路检测由光耦合器解复用的信号光分量的每个功率，并且控制从光泵浦光源提供给光放大部分的光泵浦光的功率，使得输出信号光的功率具有预定的目标值 。 控制电路还基于信号光分量的功率来控制滤光器的梯度dL / dl。

公开(公告)号：US06907181B2

公开(公告)日：2005-06-14

申请号：US09993410

申请日：2001-11-26

申请人： Makoto Katayama ,  Masayuki Nishimura

发明人： Makoto Katayama ,  Masayuki Nishimura

IPC分类号： G02B26/02 ,  G02B6/12 ,  G02B6/26 ,  G02B6/35 ,  G02F1/01 ,  G02B6/10

CPC分类号： G02B6/353 ,  G02B6/266 ,  G02B6/357 ,  G02B6/3594 ,  G02B6/3596

摘要： A small optical device which has low power consumption and which is excellent for integration, and which has a variable optical attenuation function which features proper polarization dependence over the entire wide variable optical attenuation range is provided. In the optical device, an optical circuit including a core and a cladding that covers the core is formed on a substrate. An optical element is movably disposed inside a groove provided in the substrate so as to traverse the core, and includes a plurality of optical attenuation elements having different light attenuation amounts. By moving the optical element by an actuation function portion provided on the optical circuit, the attenuation amount of signal light that propagates through the optical circuit is changed.

摘要翻译： 提供具有低功耗并且非常适合集成的小型光学装置，并且具有在整个宽可变光衰减范围内具有适当偏振依赖性的可变光衰减功能。 在光学装置中，在基板上形成包括芯和覆盖芯的包层的光电路。 光学元件可移动地设置在设置在基板中的凹槽内，以便穿过芯，并且包括具有不同光衰减量的多个光衰减元件。 通过由设在光电路上的致动功能部分移动光学元件，改变通过光电路传播的信号光的衰减量。

公开(公告)号：US06907171B2

公开(公告)日：2005-06-14

申请号：US10893968

申请日：2004-07-20

申请人： Masayuki Nishimura ,  Shigeru Tanaka

发明人： Masayuki Nishimura ,  Shigeru Tanaka

IPC分类号： G02B6/02 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  G02B6/16

CPC分类号： G02B6/02247 ,  G02B6/02004 ,  G02B6/02261 ,  G02B6/02266 ,  G02B6/29377 ,  H04B10/25253

摘要： An optical fiber composite that can easily have a desired mean transmission property as a whole even after a length of optical fiber is cut off from one end or both ends, a cable comprising the composites, and methods for producing the composite and cable. An optical fiber composite 10 is produced by splicing a first optical fiber 11, a second optical fiber 12, and a third optical fiber 13 in this order. The first optical fiber 11 and the third optical fiber 13 each have a first chromatic dispersion, D1, at the wavelength of a signal-carrying lightwave. The second optical fiber 12 has a second chromatic dispersion, D2, at the wavelength of the signal-carrying lightwave. The third optical fiber has a length, L3, shorter than the length, L1, of the first optical fiber. It is desirable that the ratio L3/L1 be at most 0.1.

摘要翻译： 即使从一端或两端切断长度的光纤，也可以容易地具有期望的平均透射特性的光纤复合体，包含该复合体的电缆以及复合电缆的制造方法。 通过按顺序拼接第一光纤11，第二光纤12和第三光纤13来制造光纤复合体10。 第一光纤11和第三光纤13在信号携带光波长的波长处都具有第一色散D 1 1。 第二光纤12在信号携带光波长的波长处具有第二色散D 2 2。 第三光纤具有比第一光纤的长度L L1短的长度L 3 3。 理想的是L 3 / L 1比为0.1以下。

公开(公告)号：US06782185B2

公开(公告)日：2004-08-24

申请号：US10331660

申请日：2002-12-31

申请人： Makoto Katayama ,  Tomohiko Kanie ,  Hiroshi Suganuma ,  Masayuki Nishimura

发明人： Makoto Katayama ,  Tomohiko Kanie ,  Hiroshi Suganuma ,  Masayuki Nishimura

IPC分类号： G02B635

CPC分类号： G02B6/3514 ,  G02B6/266 ,  G02B6/3546 ,  G02B6/3552 ,  G02B6/357 ,  G02B6/3594 ,  G02B6/3596

摘要： An optical variable attenuator has a planar waveguide, which is provided with optical waveguides forming an input optical line A and an output optical line B. A cantilever is disposed at the upper face of the planar waveguide, whereas a movable mirror for reflecting light passing through the input optical line A toward the output optical line B is secured to the leading end part of the cantilever. An electrode is disposed at the upper face of the planar waveguide. The cantilever and the electrode are connected to each other by way of a voltage source. The voltage source applies a voltage between the cantilever and the electrode, so as to generate an electrostatic force therebetween, which flexes the leading end side of the cantilever toward the electrode. As a consequence, the movable mirror moves toward the electrode.

摘要翻译： 光学可变衰减器具有平面波导，其设置有形成输入光线A和输出光线B的光波导。悬臂设置在平面波导的上表面，而可移动镜用于反射通过的光 输出光线A朝向输出光线B固定到悬臂的前端部。 电极设置在平面波导的上表面。 悬臂和电极通过电压源彼此连接。 电压源在悬臂和电极之间施加电压，以在它们之间产生静电力，使悬臂的前端侧向电极弯曲。 结果，可动镜朝向电极移动。

公开(公告)号：US06728452B2

公开(公告)日：2004-04-27

申请号：US09964845

申请日：2001-09-28

申请人： Masayuki Nishimura

发明人： Masayuki Nishimura

IPC分类号： G02B6255

CPC分类号： G02B6/02009 ,  G02B6/29376 ,  G02B6/29377

摘要： An optical cable has a reduced slicing loss and superior characteristics in the efficiency of the installation work thereof, and is therefore suitable for installation on land. First and second optical fibers have been connected together by fusion splicing to form joints thereby providing an optical fiber line. Each first optical fiber has a positive chromatic dispersion at a signal light wavelength while each second optical fiber has a negative chromatic dispersion at the same wavelength. The first and the second optical fibers, including the joints, are accommodated in the optical cable.

摘要翻译： 光缆具有减少的切片损耗和其安装工作效率的优异特性，因此适合于在陆上安装。 第一和第二光纤通过熔接连接在一起形成接头，由此提供光纤线。 每个第一光纤在信号光波长处具有正色散，而每个第二光纤在相同波长处具有负色散。 包括接头的第一和第二光纤被容纳在光缆中。

公开(公告)号：US06704135B2

公开(公告)日：2004-03-09

申请号：US10007668

申请日：2001-12-10

申请人： Eisuke Sasaoka ,  Masayuki Nishimura

发明人： Eisuke Sasaoka ,  Masayuki Nishimura

IPC分类号： H01S300

CPC分类号： H01S3/302 ,  H01S3/1022

摘要： The present invention relates to an operation mode switching apparatus comprising a structure for making it possible to minimize the waste of energy caused by troubles occurring in optical fiber lines and the like in order to efficiently utilize the energy consumed in an optical transmission system aimed for a long-term operation; a Raman amplifier including the operation mode switching apparatus; and an optical transmission system including the Raman amplifier. If an optical fiber line acting as an optical transmission medium breaks in the optical transmission system, the signal power detected from the optical fiber decreases, whereby it changes to a set value or less or the amount of decrease in signal power per unit time changes by a set value or more. The operation mode switching apparatus comprises a control section for monitoring such a change in signal power, thereby switching the pumping light supply operation from a communication mode to a wait mode for minimizing the waste of pumping energy in response to the occurrence of troubles.

摘要翻译： 本发明涉及一种操作模式切换装置，其包括一种结构，用于使由光纤线路等发生的故障所引起的能量的浪费最小化，从而有效地利用目的在于将光传输系统 长期经营; 包括操作模式切换装置的拉曼放大器; 以及包括拉曼放大器的光传输系统。 如果作为光传输介质的光纤线路在光传输系统中断裂，则从光纤检测到的信号功率减小，由此其变为设定值或更小或每单位时间的信号功率的减小量变化 设定值以上。 操作模式切换装置包括用于监视信号功率变化的控制部分，从而将泵送光供应操作从通信模式切换到等待模式，以便最小化响应于故障发生的泵送能量的浪费。

公开(公告)号：US06659614B2

公开(公告)日：2003-12-09

申请号：US10114322

申请日：2002-04-03

申请人： Makoto Katayama ,  Tomohiko Kanie ,  Masayuki Nishimura ,  Shunichi Tsuchiya

发明人： Makoto Katayama ,  Tomohiko Kanie ,  Masayuki Nishimura ,  Shunichi Tsuchiya

IPC分类号： G02B508

CPC分类号： H04B10/25133 ,  H04B2210/258

摘要： An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by each reflective surface of reflective mirror 40 of reflective means 4 to apply a predetermined phase shift to the respective frequency components. Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal. Furthermore, in regards to reflective means 4, which is used to apply phase shift to each frequency component of an optical signal, reflective mirror 40 is made a variable movable mirror by reflection position at each reflective surface, which reflects the frequency components, deforming the entire reflective surface. This allows dispersion that is created in an optical signal to be compensated with favorable controllability and high accuracy. As a result, it becomes possible to provide a variable dispersion compensator that presents high precision and controllability of dispersion compensation, and has a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator.

摘要翻译： 要成为色散补偿对象的光信号被光学合成/分离单元2分离，被分离的光信号的每个频率分量被反射装置4的反射镜40的每个反射表面反射到 对各个频率分量施加预定的相移。 然后使用光学合成/分离单元2将每个反射频率分量组合，以产生色散补偿光信号。 此外，关于用于向光信号的每个频率分量施加相移的反射装置4，通过反射位置在每个反射表面处将反射镜40制成可变可移动反射镜，其反映频率分量，使 整个反光面。 这允许以良好的可控性和高精度补偿在光信号中产生的色散。 结果，可以提供具有高精度和色散补偿的可控性的可变色散补偿器，并且具有小型化的光电路和包括这种可变色散补偿器的光传输系统。