公开(公告)号：US4764608A

公开(公告)日：1988-08-16

申请号：US072050

申请日：1987-07-10

申请人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Kazunori Kasuga ,  Shizuyoshi Fujimori ,  Susumu Kinoshita ,  Hiroshi Matsukubo

发明人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Kazunori Kasuga ,  Shizuyoshi Fujimori ,  Susumu Kinoshita ,  Hiroshi Matsukubo

IPC分类号： C07B61/00 ,  C07D471/20 ,  C07D498/20 ,  C07D513/20 ,  C07D279/10 ,  C07D221/00 ,  C07D273/01

CPC分类号： C07D471/20 ,  C07D498/20 ,  C07D513/20

摘要： This invention relates to novel processes for the manufacture of spiro-linked pyrrolidine-2,5-diones of formula; ##STR1## which have a potent inhibitory activity on aldose reductase and are useful for reduction and prevention of chronic diabetic complications.The invented processes are useful as improved and convenient method for a large scale manufacture.

摘要翻译： 本发明涉及用于制备式的螺环吡咯烷-2,5-二酮的新方法; 其对醛糖还原酶具有有效的抑制活性，并且可用于减少和预防慢性糖尿病并发症。 本发明的方法可用于大规模制造的改进和方便的方法。

公开(公告)号：US4749789A

公开(公告)日：1988-06-07

申请号：US72004

申请日：1987-07-10

申请人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Shizuyoshi Fujimori ,  Susumu Kinoshita ,  Hiroshi Matsukubo

发明人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Shizuyoshi Fujimori ,  Susumu Kinoshita ,  Hiroshi Matsukubo

IPC分类号： C07B61/00 ,  C07D471/20 ,  C07D498/20 ,  C07D513/20 ,  C07D279/10 ,  C07D241/00 ,  C07D295/08

CPC分类号： C07D471/06 ,  C07D471/20 ,  C07D498/06 ,  C07D498/20 ,  C07D513/06 ,  C07D513/20

摘要： This invention relates to novel processes for the manufacture of spiro-linked pyrrolidine-2,5-diones of the formula; ##STR1## which have a potent inhibitory activity on aldose reductase and are useful for reduction and prevention of chronic diabetic complications.The invented processes are useful as improved and convenient method for a large scale manufacture.

摘要翻译： 本发明涉及用于制备下式的螺环吡咯烷-2,5-二酮的新方法： 其对醛糖还原酶具有有效的抑制活性，并且可用于减少和预防慢性糖尿病并发症。 本发明的方法可用于大规模制造的改进和方便的方法。

公开(公告)号：US09019593B2

公开(公告)日：2015-04-28

申请号：US13417481

申请日：2012-03-12

申请人： Setsuo Yoshida ,  Susumu Kinoshita ,  George Ishikawa ,  Goji Nakagawa ,  Yutaka Kai ,  Kyosuke Sone ,  Keisuke Harada

发明人： Setsuo Yoshida ,  Susumu Kinoshita ,  George Ishikawa ,  Goji Nakagawa ,  Yutaka Kai ,  Kyosuke Sone ,  Keisuke Harada

IPC分类号： H01S5/06 ,  H04B10/291 ,  H01S5/50 ,  H04B10/12 ,  H01S5/00 ,  H01S5/042 ,  H01S5/062 ,  H01S5/0683 ,  H01S5/40

CPC分类号： H04B10/2914 ,  H01S5/0078 ,  H01S5/0428 ,  H01S5/06216 ,  H01S5/06835 ,  H01S5/4087 ,  H01S5/5027 ,  H01S2301/04 ,  H01S2301/06

摘要： An optical amplification apparatus includes a front-stage semiconductor optical amplifier which amplifies an input light and a rear-stage semiconductor optical amplifier which amplifies an amplified light outputted from the front-stage semiconductor optical amplifier. The front-stage semiconductor optical amplifier exercises auto level control of an output light by exercising variable control of driving current which flows according to applied voltage higher than light emitting threshold voltage of an internal optical amplification element. The rear-stage semiconductor optical amplifier performs gate switching of a transmitted light by exercising switching control of driving current. By doing so, distortion of a waveform is controlled and optical communication quality can be improved.

摘要翻译： 光放大装置包括放大输入光的前级半导体光放大器和放大从前级半导体光放大器输出的放大光的后级半导体光放大器。 前级半导体光放大器通过对根据施加的电压高于内部光放大元件的发光阈值电压的驱动电流的可变控制来进行输出光的自动电平控制。 后级半导体光放大器通过进行驱动电流的切换控制来进行透射光的栅极切换。 通过这样做，可以控制波形失真，提高光通信质量。

公开(公告)号：US08200088B2

公开(公告)日：2012-06-12

申请号：US12474683

申请日：2009-05-29

申请人： Kyosuke Sone ,  Susumu Kinoshita

发明人： Kyosuke Sone ,  Susumu Kinoshita

IPC分类号： H04J14/00

CPC分类号： H04L12/2852 ,  H04L12/42 ,  H04L45/04 ,  H04L45/124 ,  H04L45/62

摘要： A communication unit inhibits delay and jitter during network communication, improving the communication quality. For this purpose, the communication unit includes: a first terminator that terminates a communication channel in the first optical communication scheme established between the communication unit and another communication unit; a second terminator that terminates a signal in the second optical communication scheme; and a path setting switch that switches between a first signal path setting and a second signal path setting.

摘要翻译： 通信单元在网络通信期间抑制延迟和抖动，提高通信质量。 为此，通信单元包括：第一终端，终止在通信单元和另一通信单元之间建立的第一光通信方案中的通信信道; 第二终端器，其终止第二光通信方案中的信号; 以及在第一信号路径设置和第二信号路径设置之间切换的路径设置开关。

公开(公告)号：US20110286085A1

公开(公告)日：2011-11-24

申请号：US13088904

申请日：2011-04-18

申请人： Kyosuke SONE ,  Susumu Kinoshita

发明人： Kyosuke SONE ,  Susumu Kinoshita

IPC分类号： H01S3/13 ,  H01S3/14

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10038 ,  H01S3/10069 ,  H01S3/1608

摘要： An optical amplifier includes an input port, an output port, an amplification medium, a light source, a monitor, and a controller. The amplification medium with which doped an rare-earth element for optical amplification is allocated on an optical path between the input port and the output port. The light source supplies the amplification medium with an excitation light. The monitor monitors a total power of an optical signal of each wavelength according to a monitor period which is longer than a transient response time of the amplification medium. The controller controls the light source so that a power of the excitation light is constant when a monitor value of the monitor is equal to or smaller than a predetermined threshold value and controls the light source so that an optical gain in the amplification medium is constant when the monitor value is larger than the predetermined threshold value.

摘要翻译： 光放大器包括输入端口，输出端口，放大介质，光源，监视器和控制器。 掺杂有用于光放大的稀土元素的放大介质被分配在输入端口和输出端口之间的光路上。 光源向放大介质提供激发光。 监视器根据比放大介质的瞬态响应时间长的监视周期监视每个波长的光信号的总功率。 控制器控制光源，使得当监视器的监视值等于或小于预定阈值时激发光的功率是恒定的，并且控制光源使得放大介质中的光学增益是恒定的 监视值大于预定阈值。

公开(公告)号：US07787763B2

公开(公告)日：2010-08-31

申请号：US11098720

申请日：2005-04-04

申请人： Ashwin A. Gumaste ,  Paparao Palacharla ,  Susumu Kinoshita

发明人： Ashwin A. Gumaste ,  Paparao Palacharla ,  Susumu Kinoshita

IPC分类号： H04B10/00

CPC分类号： H04B10/275 ,  H04B10/032 ,  H04B10/27 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0275 ,  H04J14/0295

摘要： Providing protection for a network includes establishing a light-trail through a sequence of nodes of an optical network, where the sequence of nodes is coupled by a first fiber and by a second fiber. Traffic is communicated through a plurality of connections of the light-trail, where a connection is operable to communicate traffic from a source node of the sequence of nodes to one or more destination nodes of the sequence of nodes. A failure of the light-trail is detected. A protection light-trail corresponding to the light-trail is established. The traffic of the plurality of connections is communicated through the protection light-trail.

摘要翻译： 为网络提供保护包括通过光网络的节点序列来建立光轨迹，其中节点序列由第一光纤和第二光纤耦合。 业务通过光轨的多个连接进行通信，其中连接可操作以将流量从节点序列的源节点传送到节点序列的一个或多个目标节点。 检测到光轨的故障。 建立对应于轻轨的保护光路。 通过保护光路传送多个连接的通信量。

公开(公告)号：US20090290873A1

公开(公告)日：2009-11-26

申请号：US12320529

申请日：2009-01-28

申请人： Yutaka Takita ,  Susumu Kinoshita

发明人： Yutaka Takita ,  Susumu Kinoshita

IPC分类号： H04B10/20 ,  H04J14/02

CPC分类号： H04J14/025 ,  H04J3/1611 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286

摘要： An optical communicating apparatus that is connected to another optical communicating apparatus by a two-core optical transmission path includes: a one-core optical transmission path that passes an optical signal transmitted from an optical transmitter/receiver performing one-core bilateral communication and an optical signal transmitted to the optical transmitter/receiver in an opposite direction; a transmitting unit that transmits the optical signal transmitted from the optical transmitter/receiver through the one-core optical transmission path, to the other optical communicating apparatus through a first core of the two-core optical transmission path; and a receiving unit that receives the optical signal transmitted from the other communicating apparatus through a second core of the two-core optical transmission path, and passes the received optical signal to the one-core optical transmission path.

摘要翻译： 通过双芯光传输路径连接到另一光通信装置的光通信装置包括：通过从执行单核双向通信的光发射机/接收机发送的光信号的光纤传输路径和光纤 信号以相反的方向传输到光发射机/接收机; 发送单元，其通过所述单核心光传输路径将从所述光收发器发送的所述光信号通过所述双核光传输路径的第一核发送到所述另一光通信装置; 以及接收单元，其通过双芯光传输路径的第二核心接收从其他通信装置发送的光信号，并将接收到的光信号传递到单芯光传输路径。

公开(公告)号：US07477447B2

公开(公告)日：2009-01-13

申请号：US11742508

申请日：2007-04-30

申请人： Yasushi Sugaya ,  Susumu Kinoshita

发明人： Yasushi Sugaya ,  Susumu Kinoshita

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

公开(公告)号：US07466477B2

公开(公告)日：2008-12-16

申请号：US11235600

申请日：2005-09-26

申请人： Susumu Kinoshita

发明人： Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H04B10/291 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094061 ,  H01S3/094076 ,  H01S3/09408 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2525 ,  H04B10/2916 ,  H04B10/294 ,  H04B2210/003 ,  H04B2210/256

摘要： The invention provides an optical fiber amplifier which assures stable operation of a pump light source and efficiently makes use of residual pump power to achieve improvement in conversion efficiency. The optical fiber amplifier includes a rare earth doped fiber. Pump light from a pump light source is introduced into one end of the rare earth doped fiber by way of a first optical coupler, and residual pump light originating from the pump light and arriving at the other end of the rare earth doped fiber is applied to the other rare earth doped fiber amplifier or the loss compensation of a dispersion compensating fiber by Raman amplification.

摘要翻译： 本发明提供一种光纤放大器，其确保泵浦光源的稳定运行，并有效地利用剩余的泵浦功率来实现转换效率的提高。 光纤放大器包括稀土掺杂光纤。 来自泵浦光源的泵浦光通过第一光耦合器被引入稀土掺杂光纤的一端，并且源自泵浦光并到达稀土掺杂光纤的另一端的残余泵浦光被施加到 其他稀土掺杂光纤放大器或通过拉曼放大的色散补偿光纤的损耗补偿。

公开(公告)号：US20080291529A1

公开(公告)日：2008-11-27

申请号：US12215395

申请日：2008-06-27

申请人： Miki Onaka ,  Susumu Kinoshita

发明人： Miki Onaka ,  Susumu Kinoshita

IPC分类号： H01S3/30

CPC分类号： H04B10/294 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/2942 ,  H04B10/296

摘要： The present invention aims at providing a method for controlling wavelength characteristics of optical transmission powers by Raman amplification, in which the wavelength characteristics of optical transmission powers are automatically compensated without giving any losses to channel lights to thereby improve transmission characteristics, and an apparatus adopting the same. To this end, the method for controlling wavelength characteristics of optical transmission powers by Raman amplification according to the present invention supplies Raman pump light to an optical transmission path (Raman amplifying medium); compensates the wavelength characteristics of optical transmission powers caused by transmission of WDM signal light through the optical transmission path, by gain wavelength characteristics of generated Raman amplification; and monitors the wavelength characteristics of optical transmission powers after Raman amplification to thereby control the gain wavelength characteristics of Raman amplification.

摘要翻译： 本发明的目的在于提供一种用于通过拉曼放大来控制光发射功率的波长特性的方法，其中光传输功率的波长特性被自动补偿，而不会对信道灯造成任何损耗，从而提高传输特性，并且采用 相同。 为此，根据本发明的用于通过拉曼放大控制光传输功率的波长特性的方法将拉曼泵浦光提供给光传输路径（拉曼放大介质）; 补偿通过光传输路径传输WDM信号光引起的光传输功率的波长特性，通过生成拉曼放大的增益波长特性; 并监测拉曼放大后的光传输功率的波长特性，从而控制拉曼放大的增益波长特性。