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1. 发明授权

US07379236B2 Optical fiber communication system using remote pumping 失效
标题翻译：光纤通信系统采用远程泵浦
公开(公告)号：US07379236B2
公开(公告)日：2008-05-27
申请号：US10552554
申请日：2004-07-05
申请人： Hiroji Masuda , Hiroto Kawakami , Yutaka Miyamoto
发明人： Hiroji Masuda , Hiroto Kawakami , Yutaka Miyamoto
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H04B10/291 , H04B2210/003
摘要： An optical fiber communication system is provided which uses remote pumping that is capable of improving pumping efficiency and reducing a noise figure. A coupler (20) of a linear repeater (18) couples signal light to pumping light outputted from a pumping light source (19). The outputted signal light and pumping light reach a linear repeater (25) through transmission fibers (22 to 24) and remote pumping modules (27F and 27R). A coupler (30) of the linear repeater (25) couples the signal light to the pumping light supplied from a pumping light source (29), to output the signal light and the pumping light to the transmission fiber (24). The remote pumping module (27F) divides the pumping light propagated in the transmission fiber (22), from the signal light. The remote pumping module 27F branches the divided pumping light in two directions with a predetermined ratio. After branching, each of the branched pumping light is coupled to the signal light to be supplied to both ends of an erbium-doped fiber. The remote pumping module (27R) is similar in structure to the remote pumping module (27F).
摘要翻译：提供了一种使用能够提高泵送效率并降低噪声系数的远程泵送的光纤通信系统。线性中继器（18）的耦合器（20）将信号光耦合到从泵浦光源（19）输出的泵浦光。输出的信号光和泵浦光通过传输光纤（22至24）和远程泵送模块（27F和27R）到达线性中继器（25）。线性中继器（25）的耦合器（30）将信号光耦合到从泵浦光源（29）提供的泵浦光，以将信号光和泵浦光输出到传输光纤（24）。远程泵送模块（27F）将在传输光纤（22）中传播的泵浦光与信号光分开。远程泵送模块27F以预定比例在两个方向上分支分开的泵浦光。在分支之后，每个分支泵浦光耦合到要提供给掺铒光纤两端的信号光。远程泵送模块（27R）在结构上类似于远程泵送模块（27F）。

2. 发明申请

US20070003286A1 Optical fiber communication system using remote pumping 失效
标题翻译：光纤通信系统采用远程泵浦
公开(公告)号：US20070003286A1
公开(公告)日：2007-01-04
申请号：US10552554
申请日：2004-07-05
申请人： Hiroji Masuda , Hiroto Kawakami , Yutaka Miyamoto
发明人： Hiroji Masuda , Hiroto Kawakami , Yutaka Miyamoto
IPC分类号： H04J14/02
CPC分类号： H04B10/291 , H04B2210/003
摘要： An optical fiber communication system is provided which uses remote pumping that is capable of improving pumping efficiency and reducing a noise figure. A coupler (20) of a linear repeater (18) couples signal light to pumping light outputted from a pumping light source (19). The outputted signal light and pumping light reach a linear repeater (25) through transmission fibers (22 to 24) and remote pumping modules (27F and 27R). A coupler (30) of the linear repeater (25) couples the signal light to the pumping light supplied from a pumping light source (29), to output the signal light and the pumping light to the transmission fiber (24). The remote pumping module (27F) divides the pumping light propagated in the transmission fiber (22), from the signal light. The remote pumping module 27F branches the divided pumping light in two directions with a predetermined ratio. After branching, each of the branched pumping light is coupled to the signal light to be supplied to both ends of an erbium-doped fiber. The remote pumping module (27R) is similar in structure to the remote pumping module (27F).
摘要翻译：提供了一种使用能够提高泵送效率并降低噪声系数的远程泵送的光纤通信系统。线性中继器（18）的耦合器（20）将信号光耦合到从泵浦光源（19）输出的泵浦光。输出的信号光和泵浦光通过传输光纤（22至24）和远程泵送模块（27F和27R）到达线性中继器（25）。线性中继器（25）的耦合器（30）将信号光耦合到从泵浦光源（29）提供的泵浦光，以将信号光和泵浦光输出到传输光纤（24）。远程泵送模块（27F）将在传输光纤（22）中传播的泵浦光与信号光分开。远程泵送模块27F以预定比例在两个方向上分支分开的泵浦光。在分支之后，每个分支泵浦光耦合到要提供给掺铒光纤两端的信号光。远程泵送模块（27R）在结构上类似于远程泵送模块（27F）。

3. 发明授权

US07920793B2 Inline repeater and optical fiber communication system 有权
标题翻译：内联中继器和光纤通信系统
公开(公告)号：US07920793B2
公开(公告)日：2011-04-05
申请号：US10581327
申请日：2005-06-17
申请人： Hiroji Masuda , Kenji Sato , Yutaka Miyamoto
发明人： Hiroji Masuda , Kenji Sato , Yutaka Miyamoto
IPC分类号： H04J14/02
CPC分类号： H01S3/302 , H01S3/0078 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/0941 , H01S3/1608 , H01S2301/02 , H01S2301/04 , H04B10/294
摘要： An inline repeater that uses a forward-pumped DRA that can use a pumping light source such as an FBG pumping light source and a fiber laser, which are the most commonly used, and an optical fiber communication system are realized. The optical fiber communication system comprises silica fiber as a gain medium for Raman amplification to amplify a signal light; a pumping light source that emits a pumping light that co-propagates through the silica fiber in the same direction as the signal light; and a multiplexer disposed between the silica fiber and the pumping light source that multiplexes the signal light and the pumping light, with the multiplexer being provided with a means to multiplex the signal light input thereto having a wavelength longer than the zero-dispersion wavelength of the silica fiber and the pumping light emitted from the pumping light source, and the pumping light source being equipped with a means to emit pumping light, with the longest wavelength of the pumping light being shorter than the shortest wavelength of the signal light by a frequency difference on the low-frequency side of 13.7 to 30 THz.
摘要翻译：实现了使用可以使用最常用的FBG泵浦光源和光纤激光器等泵浦光源的前向泵浦DRA和光纤通信系统的在线中继器。光纤通信系统包括石英光纤作为用于拉曼放大的增益介质，用于放大信号光; 泵浦光源，其发射与所述信号光沿相同方向共同传播通过所述石英光纤的泵浦光; 以及多路复用器，其布置在二极管光纤和泵浦光源之间，多路复用信号光和泵浦光，多路复用器设置有多路复用输入到其上的信号光，该波长比该波长的零色散波长长二氧化硅纤维和从泵浦光源发射的泵浦光，并且泵浦光源装备有发射泵浦光的装置，其中泵浦光的最长波长比信号光的最短波长短于频率差在13.7到30 THz的低频侧。

4. 发明申请

US20080193136A1 Inline Repeater and Optical Fiber Communication System 有权
标题翻译：内联中继器和光纤通信系统
公开(公告)号：US20080193136A1
公开(公告)日：2008-08-14
申请号：US10581327
申请日：2005-06-17
申请人： Hiroji Masuda , Kenji Sato , Yutaka Miyamoto
发明人： Hiroji Masuda , Kenji Sato , Yutaka Miyamoto
IPC分类号： H04J14/02
CPC分类号： H01S3/302 , H01S3/0078 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/0941 , H01S3/1608 , H01S2301/02 , H01S2301/04 , H04B10/294
摘要： An inline repeater that uses a forward-pumped DRA that can use a pumping light source such as an FBG pumping light source and a fiber laser, which are the most commonly used, and an optical fiber communication system are realized. The optical fiber communication system comprises silica fiber as a gain medium for Raman amplification to amplify a signal light; a pumping light source that emits a pumping light that co-propagates through the silica fiber in the same direction as the signal light; and a multiplexer disposed between the silica fiber and the pumping light source that multiplexes the signal light and the pumping light, with the multiplexer being provided with a means to multiplex the signal light input thereto having a wavelength longer than the zero-dispersion wavelength of the silica fiber and the pumping light emitted from the pumping light source, and the pumping light source being equipped with a means to emit pumping light, with the longest wavelength of the pumping light being shorter than the shortest wavelength of the signal light by a frequency difference on the low-frequency side of 13.7 to 30 THz.
摘要翻译：实现了使用可以使用最常用的FBG泵浦光源和光纤激光器等泵浦光源的前向泵浦DRA和光纤通信系统的在线中继器。光纤通信系统包括石英光纤作为用于拉曼放大的增益介质，用于放大信号光; 泵浦光源，其发射与所述信号光沿相同方向共同传播通过所述石英光纤的泵浦光; 以及多路复用器，其布置在二极管光纤和泵浦光源之间，多路复用信号光和泵浦光，多路复用器设置有多路复用输入到其上的信号光，该波长比该波长的零色散波长长二氧化硅纤维和从泵浦光源发射的泵浦光，并且泵浦光源装备有发射泵浦光的装置，其中泵浦光的最长波长比信号光的最短波长短于频率差在13.7到30 THz的低频侧。

5. 发明授权

US06263139B1 Optical transmission system with group velocity dispersion compensation 有权
标题翻译：具有组速度色散补偿的光传输系统
公开(公告)号：US06263139B1
公开(公告)日：2001-07-17
申请号：US09436707
申请日：1999-11-09
申请人： Hiroto Kawakami , Yutaka Miyamoto
发明人： Hiroto Kawakami , Yutaka Miyamoto
IPC分类号： G02B602
CPC分类号： H04B10/2916 , G02B6/02261 , G02B6/02271 , G02B6/0228 , G02B6/29377 , H04B10/2525 , H04B2210/003
摘要： To suppress S/N degradation due to optical amplification and generation of a nonlinear optical effect in a dispersion compensating fiber, and compensate for a loss due to the dispersion compensating fiber without incorporating a long fiber inside a receiver, part of an optical transmission line is constructed by a dispersion compensating fiber and at least part of the optical transmission line is designed to have a Raman gain or a distributed gain. A pump light to obtain a Raman gain or a distributed gain is transmitted from at least one of a transmitter, a receiver, and a repeater to the optical transmission line.
摘要翻译：为了抑制由于光放大引起的S / N劣化，并且在色散补偿光纤中产生非线性光学效应，并且补偿由于色散补偿光纤而导致的损耗，而不在接收机内结合长纤维，部分光传输线是由色散补偿光纤构成并且至少部分光传输线被设计成具有拉曼增益或分布增益。用于获得拉曼增益或分布增益的泵浦光从发射机，接收机和中继器中的至少一个发射到光传输线。

6. 发明授权

US07995930B2 Optical receiver using Mach-Zehnder interferometer 有权
标题翻译：光接收机采用马赫 - 曾德干涉仪
公开(公告)号：US07995930B2
公开(公告)日：2011-08-09
申请号：US12092031
申请日：2006-05-19
申请人： Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
发明人： Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
IPC分类号： H04B10/06
CPC分类号： H04L27/2071 , G02F1/0327 , H04B10/677 , H04L27/223
摘要： The present invention relates to an optical receiver, in which the transmittance of a Mach-Zehnder interferometer can be locked at a normal operation point in a simple structure and control. A transmittance detecting circuit and a minute modulation signal detecting circuit are provided in parallel after a balanced optical receiver, and a switch is selectively connectable either a minute modulation signal detecting circuit and a transmittance detecting circuit. In the initial stage of frequency pull-in, the switch is set to connect the transmittance detecting circuit to the synchronous detection circuit. If the transmittance detecting circuit detects that the transmittance of the Mach-Zehnder interferometer at the carrier frequency becomes a desired transmittance, the connection of the switch is switched from the transmittance detecting circuit to the minute modulation signal detecting circuit.
摘要翻译：光接收机技术领域本发明涉及一种光接收机，其中可以以简单的结构和控制将马赫 - 曾德干涉仪的透射率锁定在正常操作点。在平衡光接收器之后并联设置透射检测电路和微调信号检测电路，并且开关可选择性地连接微调制信号检测电路和透射检测电路。在频率拉入的初始阶段，开关被设置为将透射检测电路连接到同步检测电路。如果透射检测电路检测到载波频率下的马赫 - 策德尔干涉仪的透射率变为期望的透射率，则将开关的连接从透射检测电路切换到微调制信号检测电路。

7. 发明授权

US09116368B2 Optical modulation device and bias voltage control method 有权
标题翻译：光调制装置及偏压控制方法
公开(公告)号：US09116368B2
公开(公告)日：2015-08-25
申请号：US14122687
申请日：2012-08-21
申请人： Hiroto Kawakami , Eiji Yoshida , Yutaka Miyamoto
发明人： Hiroto Kawakami , Eiji Yoshida , Yutaka Miyamoto
IPC分类号： G02F1/01 , G02F1/00 , H04B10/12 , G02B6/28 , G02F1/21 , H04B10/54 , H04L27/34 , H04L27/36 , H04B10/548 , H04B10/50
CPC分类号： G02F1/0123 , G02B6/28 , G02F1/21 , G02F2001/212 , H04B10/5053 , H04B10/50575 , H04B10/50595 , H04B10/541 , H04B10/548 , H04L27/3411 , H04L27/364
摘要： An optical modulation device including: bias power supplies that output a signal having a bias voltage corresponding to the null point of an optical modulation unit to the optical modulation unit; and synchronous detection circuits that determine whether an intensity of a QAM signal at a drift non-occurrence time where no drift occurs in the bias voltage becomes larger or smaller than the intensity of the QAM signal at a drift occurrence time where a drift occurs in the bias voltage, adjust the bias voltage to maximize the intensity of the QAM signal when determining that the intensity of the QAM signal at the drift non-occurrence time becomes larger than the intensity of the QAM signal at the drift occurrence time, and adjust the bias voltage to minimize the intensity of the QAM signal when determining that the intensity of the QAM signal at the drift non-occurrence time becomes smaller than the intensity of the QAM signal at the drift occurrence time.
摘要翻译：一种光调制装置，包括：向光调制单元输出具有对应于光调制单元的零点的偏置电压的信号的偏置电源; 以及同步检测电路，其确定在偏置电压中不发生漂移的漂移不发生时间的QAM信号的强度是否大于或者小于在漂移发生时的QAM信号的强度，当确定漂移不发生时间的QAM信号的强度变得大于漂移发生时的QAM信号的强度时，调整偏置电压以最大化QAM信号的强度，并且调整偏置电压，以便在确定漂移不发生时间的QAM信号的强度变得小于漂移发生时的QAM信号的强度时，使QAM信号的强度最小化。

8. 发明申请

US20140153077A1 OPTICAL MODULATION DEVICE AND BIAS VOLTAGE CONTROL METHOD 有权
标题翻译：光学调制装置和偏置电压控制方法
公开(公告)号：US20140153077A1
公开(公告)日：2014-06-05
申请号：US14122687
申请日：2012-08-21
申请人： Hiroto Kawakami , Eiji Yoshida , Yutaka Miyamoto
发明人： Hiroto Kawakami , Eiji Yoshida , Yutaka Miyamoto
IPC分类号： G02F1/01
CPC分类号： G02F1/0123 , G02B6/28 , G02F1/21 , G02F2001/212 , H04B10/5053 , H04B10/50575 , H04B10/50595 , H04B10/541 , H04B10/548 , H04L27/3411 , H04L27/364
摘要： An optical modulation device including: bias power supplies that output a signal having a bias voltage corresponding to the null point of an optical modulation unit to the optical modulation unit; and synchronous detection circuits that determine whether an intensity of a QAM signal at a drift non-occurrence time where no drift occurs in the bias voltage becomes larger or smaller than the intensity of the QAM signal at a drift occurrence time where a drift occurs in the bias voltage, adjust the bias voltage to maximize the intensity of the QAM signal when determining that the intensity of the QAM signal at the drift non-occurrence time becomes larger than the intensity of the QAM signal at the drift occurrence time, and adjust the bias voltage to minimize the intensity of the QAM signal when determining that the intensity of the QAM signal at the drift non-occurrence time becomes smaller than the intensity of the QAM signal at the drift occurrence time.
摘要翻译：一种光调制装置，包括：向光调制单元输出具有对应于光调制单元的零点的偏置电压的信号的偏置电源; 以及同步检测电路，其确定在偏置电压中不发生漂移的漂移不发生时间的QAM信号的强度是否大于或者小于在漂移发生时的QAM信号的强度，当确定漂移不发生时间的QAM信号的强度变得大于漂移发生时的QAM信号的强度时，调整偏置电压以最大化QAM信号的强度，并且调整偏置电压，以便在确定漂移不发生时间的QAM信号的强度变得小于漂移发生时的QAM信号的强度时，使QAM信号的强度最小化。

9. 发明申请

US20090097867A1 OPTICAL RECEIVER USING MACH-ZEHNDER INTERFEROMETER 有权
标题翻译：光纤接收机采用MACH-ZEHNDER干涉仪
公开(公告)号：US20090097867A1
公开(公告)日：2009-04-16
申请号：US12092031
申请日：2006-05-19
申请人： Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
发明人： Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
IPC分类号： H04B10/06
CPC分类号： H04L27/2071 , G02F1/0327 , H04B10/677 , H04L27/223
摘要： The present invention relates to an optical receiver, in which the transmittance of a Mach-Zehnder interferometer can be locked at a normal operation point in a simple structure and control.A transmittance detecting circuit and a minute modulation signal detecting circuit are provided in parallel after a balanced optical receiver, and a switch is selectively connectable either a minute modulation signal detecting circuit and a transmittance detecting circuit. In the initial stage of frequency pull-in, the switch is set to connect the transmittance detecting circuit to the synchronous detection circuit. If the transmittance detecting circuit detects that the transmittance of the Mach-Zehnder interferometer at the carrier frequency becomes a desired transmittance, the connection of the switch is switched from the transmittance detecting circuit to the minute modulation signal detecting circuit.
摘要翻译：光接收机技术领域本发明涉及一种光接收机，其中可以以简单的结构和控制将马赫 - 曾德干涉仪的透射率锁定在正常操作点。在平衡光接收器之后并联设置透射检测电路和微调信号检测电路，并且开关可选择性地连接微调制信号检测电路和透射检测电路。在频率拉入的初始阶段，开关被设置为将透射检测电路连接到同步检测电路。如果透射检测电路检测到载波频率下的马赫 - 策德尔干涉仪的透射率变为期望的透射率，则将开关的连接从透射检测电路切换到微调制信号检测电路。

10. 发明授权

US08437638B2 Optical modulation circuit and optical transmission system 有权
标题翻译：光调制电路和光传输系统
公开(公告)号：US08437638B2
公开(公告)日：2013-05-07
申请号：US12664745
申请日：2008-07-04
申请人： Takayuki Kobayashi , Akihide Sano , Yutaka Miyamoto
发明人： Takayuki Kobayashi , Akihide Sano , Yutaka Miyamoto
IPC分类号： H04B10/04 , H04J14/02
CPC分类号： H04B10/5053 , G02F1/0327 , G02F1/225 , H04B10/548 , H04B10/5561
摘要： An optical modulator and an optical transmission system convert continuous light of a multiple wavelength light source, which generates the continuous light with a fixed and complete phase but different frequencies, to a modulator driving signal so as to generate a light subcarrier with each frequency at the center and modulate the continuous light to the light subcarrier by using the modulator driving signal. In the case where an optical modulation is carried out by an optical IQ-modulator, transmitting data, for example, is converted to two parallel data A(t) and B(t), an I phase signal, in which the data A(t)+B(t) are modulated with a clock signal with a frequency ω, and a Q phase signal, in which the data A(t)−B(t) are modulated with a clock signal with a π/2 phase shifted, are generated, and the I phase signal and the Q phase signal are applied to electrodes of the optical IQ-modulator, respectively.
摘要翻译：光调制器和光传输系统将连续的光转换成多波长光源，其将具有固定且完全相位但不同频率的连续光产生到调制器驱动信号，以便产生具有每个频率的光副载波通过使用调制器驱动信号将连续光调制到光副载波上。在通过光学IQ调制器进行光学调制的情况下，例如将数据转换为两个并行数据A（t）和B（t），其中数据A（ t）+ B（t）用具有频率ω的时钟信号和Q相信号进行调制，其中数据A（t）-B（t）用具有pi / 2相移的时钟信号，并且将I相信号和Q相信号分别施加到光学IQ调制器的电极。

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