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1. 发明授权

US08547629B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
公开(公告)号：US08547629B2
公开(公告)日：2013-10-01
申请号：US13042737
申请日：2011-03-08
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/10 , H01S3/23
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

2. 发明授权

US08134775B2 Raman amplifier with signal modulated before stimulated brillouin scattering occurs 有权
标题翻译：在受激布里渊散射发生之前信号调制的拉曼放大器
公开(公告)号：US08134775B2
公开(公告)日：2012-03-13
申请号：US12401892
申请日：2009-03-11
申请人： Yuichi Suzuki , Norifumi Shukunami
发明人： Yuichi Suzuki , Norifumi Shukunami
IPC分类号： H04B10/17 , H01S3/30 , H04B10/12
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/094011 , H01S3/10069 , H04B10/2916
摘要： An optical amplifier includes a light source that outputs light having an intensity corresponding to a supplied driving power; a modulator that modulates the light output from the light source in response to an input modulation signal; a Raman amplifier that performs Raman amplification on the light modulated by the modulator using a highly-nonlinear medium; and a driver that supplies the driving power to drive the light source and inputs the modulation signal to the modulator. The driver starts inputting the modulation signal to the modulation unit before the intensity of the light propagating through the Raman amplifier exceeds an intensity value at which stimulated Brillouin scattering occurs in the Raman amplifier.
摘要翻译：光放大器包括输出具有与提供的驱动功率相对应的强度的光的光源; 响应于输入调制信号调制从光源输出的光的调制器; 拉曼放大器，对由调制器使用高度非线性介质调制的光进行拉曼放大; 以及提供驱动力以驱动光源并将调制信号输入到调制器的驱动器。在通过拉曼放大器传播的光的强度超过在拉曼放大器中发生受激布里渊散射的强度值之前，驱动器开始向调制单元输入调制信号。

3. 发明授权

US07969648B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
标题翻译：级联光放大器的增益和信号电平调整
公开(公告)号：US07969648B2
公开(公告)日：2011-06-28
申请号：US11406281
申请日：2006-04-19
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.
摘要翻译：一种包括第一和第二光放大器的光放大装置和控制器。第一光放大器接收光并放大所接收的光。第二光放大器接收由第一光放大器放大的光，并放大所接收的光。当由第一光学放大器接收的光的电平改变＆Dgr时，控制器控制由第二光放大器接收的光的水平变化大约为＆Dgr。在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。

4. 发明申请

US20100322622A1 OSNR MONITOR DEVICE AND OSNR MEASUREMENT DEVICE 失效
标题翻译： OSNR监控设备和OSNR测量设备
公开(公告)号：US20100322622A1
公开(公告)日：2010-12-23
申请号：US12818613
申请日：2010-06-18
申请人： Norifumi SHUKUNAMI , Kentaro Nakamura , Noriaki Mizuguchi
发明人： Norifumi SHUKUNAMI , Kentaro Nakamura , Noriaki Mizuguchi
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： An OSNR monitor device includes an optical receiver including a delay interferometer which inputs an optical signal in accordance with a given bandwidth and outputs two optical signals and causes the optical signals to interfere with each other and optical detectors which outputs currents in accordance with optical powers of the optical signals output from the interferometer, an optical power monitor configured to obtain the optical powers of the optical signals received by the optical detectors included in the optical receiver, and an OSNR calculator configured to calculate an optical signal-to-noise ratio in accordance with the optical powers obtained from the optical power monitor and the reception bandwidth.
摘要翻译： OSNR监视器装置包括：光接收机，包括延迟干涉仪，该延迟干涉仪根据给定的带宽输入光信号，并输出两个光信号，并使光信号相互干扰，并根据光功率输出电流的光检测器从干涉仪输出的光信号，被配置为获得由光接收机中包括的光检测器接收的光信号的光功率的光功率监视器，以及被配置为根据光接收机计算光信噪比的OSNR计算器具有从光功率监视器获得的光功率和接收带宽。

5. 发明授权

US07692849B2 Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same 失效
标题翻译：测量非线性光学性质的方法，以及使用其的光放大器和光传输系统
公开(公告)号：US07692849B2
公开(公告)日：2010-04-06
申请号：US11822841
申请日：2007-07-10
申请人： Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04B10/17 , H04B10/12
CPC分类号： G01M11/33 , G01M11/319 , H04B10/255
摘要： In an optical amplifier of the present invention, an input light is supplied to one end of an optical fiber connected to an output port, and the power of a light in an opposite direction which is input to the output port from the one end of the optical fiber, is measured, thereby obtaining a stimulated Brillouin scattering (SBS) occurrence threshold in the optical fiber based on the measurement result. Then, using the SBS occurrence threshold, a relation been the input light power and an occurrence amount of the self phase modulation (SPM) or the like in the optical fiber is obtained to be reflected on a control of the optical amplifier, so that an occurrence of the SPM or the like in the optical fiber is suppressed. As a result, it becomes possible to accurately measure, with a simple configuration, the nonlinear optical properties of the optical fiber actually connected to the output port of the optical amplifier, so that the optical S/N ratio degradation due to a nonlinear optical effect can be effectively suppressed.
摘要翻译：在本发明的光放大器中，输入光被提供给连接到输出端口的光纤的一端，并且从与所述输出端口的一端输入到输出端口的相反方向的光的功率光纤，从而基于测量结果在光纤中获得受激布里渊散射（SBS）发生阈值。然后，使用SBS发生阈值，获得输入光功率和光纤中的自相位调制（SPM）等的发生量的关系，以反映在光放大器的控制上，使得抑制光纤中的SPM等的发生。结果，可以以简单的结构精确地测量实际连接到光放大器的输出端口的光纤的非线性光学特性，使得由于非线性光学效应导致的光S / N比劣化可以有效地抑制。

6. 发明申请

US20090237779A1 OPTICAL AMPLIFIER 有权
标题翻译：光放大器
公开(公告)号：US20090237779A1
公开(公告)日：2009-09-24
申请号：US12401892
申请日：2009-03-11
申请人： Yuichi Suzuki , Norifumi Shukunami
发明人： Yuichi Suzuki , Norifumi Shukunami
IPC分类号： H01S3/30 , H01S3/10
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/094011 , H01S3/10069 , H04B10/2916
摘要： An optical amplifier includes a light source that outputs light having an intensity corresponding to a supplied driving power; a modulator that modulates the light output from the light source in response to an input modulation signal; a Raman amplifier that performs Raman amplification on the light modulated by the modulator using a highly-nonlinear medium; and a driver that supplies the driving power to drive the light source and inputs the modulation signal to the modulator. The driver starts inputting the modulation signal to the modulation unit before the intensity of the light propagating through the Raman amplifier exceeds an intensity value at which stimulated Brillouin scattering occurs in the Raman amplifier.
摘要翻译：光放大器包括输出具有与提供的驱动功率相对应的强度的光的光源; 响应于输入调制信号调制从光源输出的光的调制器; 拉曼放大器，对由调制器使用高度非线性介质调制的光进行拉曼放大; 以及提供驱动力以驱动光源并将调制信号输入到调制器的驱动器。在通过拉曼放大器传播的光的强度超过在拉曼放大器中发生受激布里渊散射的强度值之前，驱动器开始向调制单元输入调制信号。

7. 发明授权

US07417791B2 Optical amplifier for amplifying multi-wavelength light 有权
标题翻译：用于放大多波长光的光放大器
公开(公告)号：US07417791B2
公开(公告)日：2008-08-26
申请号：US11167343
申请日：2005-06-28
申请人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
发明人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
IPC分类号： H01S3/00
CPC分类号： H01S3/094003 , H01S3/06758 , H01S3/094015 , H01S3/094061 , H01S3/10015 , H01S3/1301 , H01S3/1305 , H01S2301/02 , H01S2301/04
摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.
摘要翻译：多波长光被输入到掺铒光纤作为光放大介质。泵浦光被提供给该掺铒光纤。当在掺铒光纤中将来自多波长的短波长区域的状态信号光的转变输入到不输入信号光的状态时，多波长的长波长区域的信号光的输出功率 - 波长的光可以变化。选择泵浦光的波长，使得当功率变化时，长波长区域上的信号光的输出功率不能为负。

8. 发明申请

US20050248834A1 Optical amplifier for amplifying multi-wavelength light 有权
标题翻译：用于放大多波长光的光放大器
公开(公告)号：US20050248834A1
公开(公告)日：2005-11-10
申请号：US11167343
申请日：2005-06-28
申请人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
发明人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
IPC分类号： H01S3/10 , H01S3/00 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/13 , H01S3/131 , H04B10/25 , H04B10/2507 , H04B10/294 , H04J14/00 , H04J14/02
CPC分类号： H01S3/094003 , H01S3/06758 , H01S3/094015 , H01S3/094061 , H01S3/10015 , H01S3/1301 , H01S3/1305 , H01S2301/02 , H01S2301/04
摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.
摘要翻译：多波长光被输入到掺铒光纤作为光放大介质。泵浦光被提供给该掺铒光纤。当在掺铒光纤中将来自多波长的短波长区域的状态信号光的转变输入到不输入信号光的状态时，多波长的长波长区域的信号光的输出功率 - 波长的光可以变化。选择泵浦光的波长，使得当功率变化时，长波长区域上的信号光的输出功率不能为负。

9. 发明授权

US06747790B2 Optical amplifier for amplifying multi-wavelength light 有权
公开(公告)号：US06747790B2
公开(公告)日：2004-06-08
申请号：US10032095
申请日：2001-12-31
申请人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
发明人： Miki Onaka , Yasushi Sugaya , Etsuko Hayashi , Norifumi Shukunami , Manabu Watanabe
IPC分类号： H01S300
CPC分类号： H01S3/094003 , H01S3/06758 , H01S3/094015 , H01S3/094061 , H01S3/10015 , H01S3/1301 , H01S3/1305 , H01S2301/02 , H01S2301/04
摘要： Multi-wavelength light is inputted to an erbium-doped fiber as an optical amplification medium. Pump light is supplied to this erbium-doped fiber. When a transition from a state signal light on the short wavelength area in the multi-wavelength is input in the erbium-doped fiber to a state the signal light is not input, the output power of signal light on the long wavelength area in the multi-wavelength light can vary. The wavelength of pump light is selected in such a way that the output power of the signal light on the long wavelength area can not be negative when the power varies.

10. 发明授权

US09031418B2 Communication system, measuring apparatus, transmitting apparatus, and measurement method 有权
标题翻译：通信系统，测量装置，发送装置和测量方法
公开(公告)号：US09031418B2
公开(公告)日：2015-05-12
申请号：US13292430
申请日：2011-11-09
申请人： Masahiro Yuki , Takafumi Terahara , Norifumi Shukunami
发明人： Masahiro Yuki , Takafumi Terahara , Norifumi Shukunami
IPC分类号： H04B10/077 , H04B10/564 , H04B10/2507 , H04J14/06 , H04B10/50 , H04B10/532 , H04J14/02
CPC分类号： H04B10/0779 , H04B10/0775 , H04B10/2572 , H04B10/5057 , H04B10/532 , H04B10/564 , H04B2210/075 , H04J14/0204 , H04J14/0205 , H04J14/022 , H04J14/0275 , H04J14/0276 , H04J14/0283 , H04J14/06
摘要： A communication system including: a transmission apparatus configured to modulate a first light by using a first signal to be transferred and a second signal having a frequency different from a frequency of the first signal so as to generate a first optical signal, modulate a second light by using a third signal to be transferred and a fourth signal having a frequency different from a frequency of the third signal so as to generate a second optical signal, polarization-multiplex the first optical signal and the second optical signal, and transmit a polarization-multiplexed optical signal in which the first optical signal and the second optical signal are polarization-multiplexed, each of the first light and the second light being polarized; and a measuring apparatus configured to measure powers of the second signal and the fourth signal which are included in the polarization-multiplexed optical signal transmitted from the transmission apparatus.
摘要翻译：一种通信系统，包括：发送装置，被配置为通过使用要传送的第一信号和具有与所述第一信号的频率不同的频率的第二信号来调制第一光，以产生第一光信号，调制第二光通过使用要传送的第三信号和具有与第三信号的频率不同的频率的第四信号，以产生第二光信号，对第一光信号和第二光信号进行极化复用，第一光信号和第二光信号被偏振复用的多路复用光信号，第一光和第二光中的每一个都被偏振; 以及测量装置，被配置为测量包括在从发送装置发送的偏振复用光信号中的第二信号和第四信号的功率。

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