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21. 发明授权

US5710660A Gain-controllable optical amplifier and optical gain-control method 失效
标题翻译：增益可控光放大器和光增益控制方法
公开(公告)号：US5710660A
公开(公告)日：1998-01-20
申请号：US606653
申请日：1996-02-26
申请人： Shu Yamamoto , Hidenori Taga , Noboru Edagawa , Shigeyuki Akiba , Kuniaki Motoshima , Katsumi Takano , Tadayoshi Kitayama
发明人： Shu Yamamoto , Hidenori Taga , Noboru Edagawa , Shigeyuki Akiba , Kuniaki Motoshima , Katsumi Takano , Tadayoshi Kitayama
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/13 , H01S3/131 , H01S3/00 , C02B6/00
CPC分类号： H04B10/2931 , H01S3/06758 , H01S3/1301
摘要： This invention provides an optical amplifier which has low noise characteristics for a wide range of input signal electric power. The optical amplifier has a plurality of cascaded optical amplifying units, a signal level detector, and a pump-source controller. The pump-source controller changes controlling objects from a pump-source corresponding to a first one of the optical amplifying units to a pump-source corresponding to a second one of the optical amplifying units according to a detection level of the signal level detector from a low level to a high level. When the detection level is outside of a control object range, the optical amplifier controls an output from the pump-source to stabilize. When the detection level is within the control object range, the optical amplifier controls an output from a pump-source of each of optical amplifying units according to the detection level.
摘要翻译：本发明提供一种对于宽范围的输入信号电力具有低噪声特性的光放大器。光放大器具有多个级联的光放大单元，信号电平检测器和泵源控制器。泵源控制器根据来自信号电平检测器的检测电平，将对应于第一光放大单元的泵浦源的控制对象改变为对应于第二光放大单元的泵浦源低水平到高水平。当检测电平超出控制对象范围时，光放大器控制泵源的输出稳定。当检测水平处于控制对象范围内时，光放大器根据检测水平控制每个光放大单元的泵浦源的输出。

22. 发明授权

US5872647A Optical transmitting terminal 失效
标题翻译：光发射终端
公开(公告)号：US5872647A
公开(公告)日：1999-02-16
申请号：US760411
申请日：1996-12-04
申请人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Shigeyuki Akiba
发明人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Shigeyuki Akiba
IPC分类号： G02F1/01 , H04B10/2569 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/524 , H04B10/556 , H04B10/60 , H04B10/61 , H04B10/04
CPC分类号： H04B10/532
摘要： The object of the present invention is to provide an optical transmitter which enables the reduction of the strong dependency of the transmission characteristic on the high-speed polarization scrambler driving signal phase. The light outputted from a light source is converted to a RZ pulse by an electro-absorption modulator. The RZ pulse is modulated by a data modulator, and the polarization thereof is scrambled in a high-speed electro-optic polarization scrambler and outputted from the output terminal thereof. Since, in the present invention, the light is once changed to a RZ pulse, the strong dependency of the optical signal transmission characteristic on the high-speed polarization scrambler driving signal phase can be reduced. Further, if the phase of the RZ pulse in the NRZ modulation signal is made to synchronize with the rising edge or the falling edge of the NRZ signal, the dependency on the high-speed polarization scrambler driving signal phase can be further reduced.
摘要翻译：本发明的目的是提供一种能够降低传输特性对高速偏振加扰器驱动信号相位的强依赖性的光发射机。从光源输出的光通过电吸收式调制器转换为RZ脉冲。 RZ脉冲由数据调制器调制，其极化在高速电光偏振扰乱器中被加扰并从其输出端输出。由于在本发明中，光一度变为RZ脉冲，所以可以降低光信号传输特性对高速偏振加扰器驱动信号相位的强烈依赖性。此外，如果使NRZ调制信号中的RZ脉冲的相位与NRZ信号的上升沿或下降沿同步，则可以进一步降低对高速偏振加扰器驱动信号相位的依赖性。

23. 发明授权

US5471333A Optical communication system 失效
标题翻译：光通信系统
公开(公告)号：US5471333A
公开(公告)日：1995-11-28
申请号：US125428
申请日：1993-09-22
申请人： Hidenori Taga , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Hiroharu Wakabayashi
发明人： Hidenori Taga , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Hiroharu Wakabayashi
IPC分类号： G02F1/35 , H04B10/2507 , H04B10/2525 , H04B10/299 , H04B10/508 , H04B10/524 , H04B10/58 , H04B10/00 , H04B10/12
CPC分类号： H04B10/25077
摘要： An optical transmission system is disclosed, in which the transmission of the optical soliton pulses is controlled by controlling the wavelength dispersion of the optical fiber transmission line for each long section including a plurality of optical amplifier repeaters. In this case,the first sections having an average value of the wavelength dispersion larger than the dispersion value meeting with the soliton condition and the second sections having an average value of the wavelength dispersion smaller than the dispersion value meeting with the soliton condition are alternatively allocated in the optical fiber transmission line, so that the average value of the wavelength dispersion of the entire length of the optical fiber transmission line assumes a positive value.
摘要翻译：公开了一种光传输系统，其中通过控制包括多个光放大器中继器的每个长部分的光纤传输线的波长色散来控制光孤子脉冲的传输。在这种情况下，交替地分配具有大于满足孤子条件的色散值的波长色散的平均值的第一部分和具有小于满足孤立条件的色散值的波长色散的平均值的第二部分在光纤传输线中，使得光纤传输线的整个长度的波长色散的平均值为正值。

24. 发明授权

US06614588B1 Optical amplifier having various control circuitry 有权
公开(公告)号：US06614588B1
公开(公告)日：2003-09-02
申请号：US09725288
申请日：2000-11-29
申请人： Aritomo Uemura , Kiwami Matsushita , Yukio Horiuchi , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
发明人： Aritomo Uemura , Kiwami Matsushita , Yukio Horiuchi , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H01S300
CPC分类号： H04B10/29 , H04B10/2918 , H04B10/808
摘要： The optical amplifier according to the present invention is constructed such that the amount of the electric current fed to the power feeding line 2a is first detected by the current detection means, and then a setting signal is generated to each of the bypass circuits 22 and 23 in accordance with the thus detected amount of the fed current, and thereafter the output level of each of the optical repeater circuits 11 and 12 is controlled respectively by the bypass circuits 22 and 23, so that the output level of these repeater circuits 11 and 12 can be controlled in accordance with the amount of the current fed to the power feeding line 2a.

25. 发明授权

US06459518B1 Optical transmitting apparatus 失效
标题翻译：光发射装置
公开(公告)号：US06459518B1
公开(公告)日：2002-10-01
申请号：US09329867
申请日：1999-06-11
申请人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
发明人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
IPC分类号： H04B1000
CPC分类号： H04B10/532
摘要： A laser diode continuously laser-oscillates and its output light is applied to an optical modulator. A pulse driver drives the optical modulator according to a data to be transmitted. A phase modulator is driven by a phase modulator driver and phase-modulates the output from the optical modulator. The polarization direction of the incident light of the phase modulator is set so that the modulation efficiency of the phase modulator becomes the maximum. The output light of the phase modulator inputs a birefringent medium and applies to an optical transmission line after transmitting the birefringent medium. The principal axis of the birefringent medium is disposed so as to be at an angle of 45° to the polarization direction of the output light from the phase modulator.
摘要翻译：激光二极管连续激光振荡，其输出光被施加到光学调制器。脉冲驱动器根据要发送的数据驱动光调制器。相位调制器由相位调制器驱动器驱动并对来自光调制器的输出进行相位调制。相位调制器的入射光的偏振方向被设定为使得相位调制器的调制效率达到最大。相位调制器的输出光输入双折射介质，并在透射双折射介质之后施加到光传输线。双折射介质的主轴被布置成与来自相位调制器的输出光的偏振方向成45°的角度。

26. 发明授权

US06867908B2 Optical amplifier having various control circuitry 有权
标题翻译：具有各种控制电路的光放大器
公开(公告)号：US06867908B2
公开(公告)日：2005-03-15
申请号：US10401748
申请日：2003-03-31
申请人： Aritomo Uemura , Kiwami Matsushita , Yukio Horiuchi , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
发明人： Aritomo Uemura , Kiwami Matsushita , Yukio Horiuchi , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H03F3/08 , H04B3/36 , H04B10/03 , H04B10/079 , H04B10/29 , H04B10/293 , H04B10/80 , H01S3/00
CPC分类号： H04B10/29 , H04B10/2918 , H04B10/808
摘要： The optical amplifier according to the present invention is constructed such that the amount of the electric current fed to the power feeding line 2a is first detected by the current detection means, and then a setting signal is generated to each of the bypass circuits 22 and 23 in accordance with the thus detected amount of the fed current, and thereafter the output level of each of the optical repeater circuits 11 and 12 is controlled respectively by the bypass circuits 22 and 23, so that the output level of these repeater circuits 11 and 12 can be controlled in accordance with the amount of the current fed to the power feeding line 2a.
摘要翻译：根据本发明的光放大器被构造成使得通过电流检测装置首先检测馈送到馈电线2a的电流量，然后对每个旁路电路22和23产生设置信号根据这样检测到的馈电电流量，然后分别由旁路电路22和23控制每个光中继器电路11和12的输出电平，使得这些中继器电路11和12的输出电平可以根据馈送到馈电线2a的电流量进行控制。

27. 发明授权

US6091538A Gain equalizing apparatus 失效
标题翻译：增益均衡装置
公开(公告)号：US6091538A
公开(公告)日：2000-07-18
申请号：US987433
申请日：1997-12-09
申请人： Noriyuki Takeda , Shigeyuki Akiba , Noboru Edagawa , Hidenori Taga
发明人： Noriyuki Takeda , Shigeyuki Akiba , Noboru Edagawa , Hidenori Taga
IPC分类号： H01S3/10 , H04B10/2507 , H04B10/29 , H04B10/291 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/294 , H04J14/0221 , H04B2210/258
摘要： An equalizing apparatus for equalizing gains of wideband wavelength-division multiplexed light and for improving the S/N ratio comprises a plurality of optical amplifyer for optically amplifying light in different wavelength groups, respectively; and multiplexer for multiplexing optically amplified light from said plurality of optically amplifying means.
摘要翻译：用于均衡宽带波分复用光的增益并用于提高S / N比的均衡装置包括分别用于光学放大不同波长组中的光的多个光放大器; 以及用于对来自所述多个光学放大装置的光放大的光进行复用的多路复用器。

28. 发明授权

US06549711B1 Soliton pulse compression optical fiber and method for making soliton pulse compression optical fiber 失效
标题翻译：孤子脉冲压缩光纤和孤子脉冲压缩光纤的方法
公开(公告)号：US06549711B1
公开(公告)日：2003-04-15
申请号：US09240593
申请日：1999-02-01
申请人： Tadakatsu Shimada , Kazuo Koya , Noboru Edagawa , Masatoshi Suzuki , Itsuro Morita
发明人： Tadakatsu Shimada , Kazuo Koya , Noboru Edagawa , Masatoshi Suzuki , Itsuro Morita
IPC分类号： G02B602
CPC分类号： G02B6/02247 , C03B37/027 , C03B2203/06 , C03B2203/18 , C03B2203/36 , G02B6/02 , G02B6/02028
摘要： The soliton pulse compression optical fiber comprises a core and a clad that surrounds the core for compressing the injected light pulse in width. The maximum relative index difference between the core and the clad is between about 1.2% and 2.5%. The core diameter of the soliton pulse compression optical fiber varies along the length of the soliton pulse compression optical fiber and the core has a step-like refractive index distribution. The optical fiber perform of the soliton pulse compression optical fiber comprises a core preform, which is to be a core of the soliton pulse compression optical fiber, and a clad preform that surrounds the core preform. The maximum relative index difference between the core perform and the clad preform is also between about 1.2% and 2.5%.
摘要翻译：孤子脉冲压缩光纤包括芯和围绕芯的包层，用于压缩注入的光脉冲的宽度。芯和包层之间的最大相对折射率差在约1.2％至2.5％之间。孤子脉冲压缩光纤的芯直径沿着孤子脉冲压缩光纤的长度变化，并且芯具有阶梯状折射率分布。孤子脉冲压缩光纤的光纤执行包括作为孤子脉冲压缩光纤的核心的芯预制棒和围绕芯预制棒的包层预制棒。核心执行和包层预制件之间的最大相对折射率差异也在约1.2％至2.5％之间。

29. 发明授权

US06188510B1 Optical amplifying transmission system and optical amplifying repeater 失效
标题翻译：光放大传输系统和光放大中继器
公开(公告)号：US06188510B1
公开(公告)日：2001-02-13
申请号：US09248399
申请日：1999-02-10
申请人： Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
发明人： Noboru Edagawa , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H01S300
CPC分类号： H04B10/2918
摘要： An optical amplifying transmission system comprising a first optical amplifying transmission line including a first optical amplifier, a second optical amplifying transmission line including a second optical amplifier, a pumping light generator for generating pumping lights to be supplied to said first and second amplifiers, the powers of the pumping lights being variable, and first and second terminal stations which connect respectively to both ends of said first and second optical amplifying transmission lines.
摘要翻译：一种光放大传输系统，包括第一光放大传输线，包括第一光放大器，包括第二光放大器的第二光放大传输线，用于产生供给所述第一和第二放大器的泵浦光的泵浦光发生器，的泵浦光是可变的，以及分别连接到所述第一和第二光放大传输线的两端的第一和第二终端站。

30. 发明授权

US5162936A Apparatus for monitoring the operation of an optical repeater 失效
标题翻译：用于监测光学重复器的操作的装置
公开(公告)号：US5162936A
公开(公告)日：1992-11-10
申请号：US655530
申请日：1991-02-14
申请人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Hiroharu Wakabayashi
发明人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Hiroharu Wakabayashi
IPC分类号： H01S3/067 , H01S3/131 , H04B10/07 , H04B10/077 , H04B10/29 , H04B10/54 , H04B10/564
CPC分类号： H04B10/2931 , H04B10/0777 , H04B10/2912 , H04B10/2918 , H01S3/06754 , H01S3/10015 , H01S3/1301 , H04B2210/074
摘要： Apparatus for monitoring a plurality of optical repeaters of an optical communication system in which each said repeater directly amplifies an optical signal transmitted in an optical fiber and passing through the respective optical repeater, including an optical division circuit for dividing an outgoing main line signal and a monitoring signal, a format conversion circuit by which monitoring information is converted into binary information, a previous modulation circuit by which a monitoring signal is modulated with a sine wave, a comparison circuit which compares the monitoring signal with a reference voltage, a voltage controlled amplifier which amplifies the modulated monitoring signal, an automatic gain control circuit which regulates the output from the outgoing optical repeater, and an outgoing optical repeater which includes a stimulating light source, a wave synthesizer and a doped optical fiber.
摘要翻译：一种用于监视光通信系统的多个光中继器的设备，其中每个所述中继器直接放大在光纤中传输的光信号并通过相应的光中继器，包括用于划分输出主线信号的光分路电路和监视信号，将监视信息转换为二进制信息的格式转换电路，用正弦波调制监视信号的先前调制电路，将监视信号与参考电压进行比较的比较电路，压控放大器其放大调制监视信号，调节输出光中继器的输出的自动增益控制电路和包括刺激光源，波合成器和掺杂光纤的输出光中继器。

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