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1. 发明授权

US07761007B2 Optical network system and transmission apparatus 有权
公开(公告)号：US07761007B2
公开(公告)日：2010-07-20
申请号：US11313960
申请日：2005-12-22
申请人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
发明人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
IPC分类号： H04B10/20 , H04J14/02
摘要： An optical network system is disclosed by which flexible wavelength path setting can be performed in accordance with tree-shaped and star-shaped network topology. A central node includes a multiplexing section for multiplexing optical signals transmitted from user nodes and inputted thereto, and a central node side branching section for branching the optical signal multiplexed by the multiplexing section and supplying the branched optical signals to the user nodes. Each of the user nodes includes a transmission section capable of outputting an optical signal to which transmission wavelengths different from those of the other user nodes are set, and a reception section for extracting selected optical wavelength components from the branched light supplied thereto from the central node side branching section and extracting optical signals from the extracted optical wavelength components.

2. 发明授权

US07406262B2 Optical transmission device 有权
标题翻译：光传输装置
公开(公告)号：US07406262B2
公开(公告)日：2008-07-29
申请号：US11082958
申请日：2005-03-18
申请人： Goji Nakagawa , Hideyuki Miyata , Yutaka Kai , Hiroshi Onaka , Setsuo Yoshida , Kyosuke Sone , Tomohiro Ueno
发明人： Goji Nakagawa , Hideyuki Miyata , Yutaka Kai , Hiroshi Onaka , Setsuo Yoshida , Kyosuke Sone , Tomohiro Ueno
IPC分类号： H04J14/02
CPC分类号： H04B10/572 , H04J14/0204 , H04J14/0209 , H04J14/021 , H04J14/0213 , H04J14/022 , H04J14/0227
摘要： An optical transmission device improved in quality and reliability of OADM function and permitting configuration of highly-flexible, economical OADM networks. A wavelength tunable filter variably selects a wavelength according to a control frequency. A filter controller applies the control frequency to the filter while scanning wavelength over an entire signal bandwidth, to detect, from a reference wavelength monitor signal supplied thereto, a reference control frequency which permits the filter to select a reference wavelength and according to which wavelength is matched. On receiving a wavelength selection request, the controller obtains a target control frequency from the reference control frequency and the position of a target wavelength relative to the reference wavelength, and applies the obtained frequency to the filter. A reference wavelength filter transmits the reference wavelength therethrough. A light-receiving element monitors the transmitted reference wavelength to generate the monitor signal.
摘要翻译：一种光传输设备改进了OADM功能的质量和可靠性，并允许配置高度灵活，经济的OADM网络。波长可调滤波器根据控制频率可变地选择波长。滤波器控制器在整个信号带宽上扫描波长时将滤波器的控制频率施加到滤波器，从提供给其的参考波长监测信号中检测出允许滤波器选择参考波长的参考控制频率，根据哪个波长是匹配。在接收到波长选择请求时，控制器从参考控制频率和目标波长相对于参考波长的位置获得目标控制频率，并将获得的频率应用于滤波器。参考波长滤波器透过参考波长。光接收元件监测发射的参考波长以产生监测信号。

3. 发明授权

US07826744B2 Optical network system and transmission apparatus 失效
标题翻译：光网络系统和传输设备
公开(公告)号：US07826744B2
公开(公告)日：2010-11-02
申请号：US11313960
申请日：2005-12-22
申请人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
发明人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
IPC分类号： H04B10/20 , H04J14/02
CPC分类号： H04Q11/0062 , H04B10/27 , H04B10/272 , H04J14/0201 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0227 , H04J14/0228 , H04J14/0238 , H04J14/0241 , H04J14/0282 , H04J14/0283 , H04Q11/0005 , H04Q2011/0035 , H04Q2011/0092 , H04Q2011/0094 , H04Q2011/0096
摘要： An optical network system is disclosed by which flexible wavelength path setting can be performed in accordance with tree-shaped and star-shaped network topology. A central node includes a multiplexing section for multiplexing optical signals transmitted from user nodes and inputted thereto, and a central node side branching section for branching the optical signal multiplexed by the multiplexing section and supplying the branched optical signals to the user nodes. Each of the user nodes includes a transmission section capable of outputting an optical signal to which transmission wavelengths different from those of the other user nodes are set, and a reception section for extracting selected optical wavelength components from the branched light supplied thereto from the central node side branching section and extracting optical signals from the extracted optical wavelength components.
摘要翻译：公开了一种光网络系统，通过其可以根据树形和星形网络拓扑来执行灵活的波长路径设置。中央节点包括多路复用部分，用于复用从用户节点发送的光信号并输入其中;以及中央节点侧分支部分，用于分支由多路复用部分复用的光信号，并将分支的光信号提供给用户节点。每个用户节点包括能够输出与其他用户节点的发送波长不同的发送波长的光信号的发送部分，以及从中央节点向其提供的分支光提取所选择的光波长分量的接收部分并从所提取的光波长分量中提取光信号。

4. 发明申请

US20060171715A1 Optical network system and transmission apparatus 失效
标题翻译：光网络系统和传输设备
公开(公告)号：US20060171715A1
公开(公告)日：2006-08-03
申请号：US11313960
申请日：2005-12-22
申请人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
发明人： Hideyuki Miyata , Goji Nakagawa , Yutaka Kai
IPC分类号： H04J14/00
CPC分类号： H04Q11/0062 , H04B10/27 , H04B10/272 , H04J14/0201 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0227 , H04J14/0228 , H04J14/0238 , H04J14/0241 , H04J14/0282 , H04J14/0283 , H04Q11/0005 , H04Q2011/0035 , H04Q2011/0092 , H04Q2011/0094 , H04Q2011/0096
摘要： An optical network system is disclosed by which flexible wavelength path setting can be performed in accordance with tree-shaped and star-shaped network topology. A central node includes a multiplexing section for multiplexing optical signals transmitted from user nodes and inputted thereto, and a central node side branching section for branching the optical signal multiplexed by the multiplexing section and supplying the branched optical signals to the user nodes. Each of the user nodes includes a transmission section capable of outputting an optical signal to which transmission wavelengths different from those of the other user nodes are set, and a reception section for extracting selected optical wavelength components from the branched light supplied thereto from the central node side branching section and extracting optical signals from the extracted optical wavelength components.
摘要翻译：公开了一种光网络系统，通过其可以根据树形和星形网络拓扑来执行灵活的波长路径设置。中央节点包括多路复用部分，用于复用从用户节点发送的光信号并输入其中;以及中央节点侧分支部分，用于分支由多路复用部分复用的光信号，并将分支的光信号提供给用户节点。每个用户节点包括能够输出与其他用户节点的发送波长不同的发送波长的光信号的发送部分，以及从中央节点向其提供的分支光提取所选择的光波长分量的接收部分并从所提取的光波长分量中提取光信号。

5. 发明申请

US20050169633A1 Optical transmission device 有权
标题翻译：光传输装置
公开(公告)号：US20050169633A1
公开(公告)日：2005-08-04
申请号：US11082958
申请日：2005-03-18
申请人： Goji Nakagawa , Hideyuki Miyata , Yutaka Kai , Hiroshi Onaka , Setsuo Yoshida , Kyosuke Sone , Tomohiro Ueno
发明人： Goji Nakagawa , Hideyuki Miyata , Yutaka Kai , Hiroshi Onaka , Setsuo Yoshida , Kyosuke Sone , Tomohiro Ueno
IPC分类号： H04B10/27 , G02F1/125 , H01L31/12 , H01S5/0687 , H04B10/07 , H04B10/275 , H04B10/29 , H04J14/00 , H04J14/02
CPC分类号： H04B10/572 , H04J14/0204 , H04J14/0209 , H04J14/021 , H04J14/0213 , H04J14/022 , H04J14/0227
摘要： An optical transmission device improved in quality and reliability of OADM function and permitting configuration of highly-flexible, economical OADM networks. A wavelength tunable filter variably selects a wavelength according to a control frequency. A filter controller applies the control frequency to the filter while scanning wavelength over an entire signal bandwidth, to detect, from a reference wavelength monitor signal supplied thereto, a reference control frequency which permits the filter to select a reference wavelength and according to which wavelength is matched. On receiving a wavelength selection request, the controller obtains a target control frequency from the reference control frequency and the position of a target wavelength relative to the reference wavelength, and applies the obtained frequency to the filter. A reference wavelength filter transmits the reference wavelength therethrough. A light-receiving element monitors the transmitted reference wavelength to generate the monitor signal.
摘要翻译：一种光传输设备改进了OADM功能的质量和可靠性，并允许配置高度灵活，经济的OADM网络。波长可调滤波器根据控制频率可变地选择波长。滤波器控制器在整个信号带宽上扫描波长时将滤波器的控制频率施加到滤波器，从提供给其的参考波长监测信号中检测出允许滤波器选择参考波长的参考控制频率，根据哪个波长是匹配。在接收到波长选择请求时，控制器从参考控制频率和目标波长相对于参考波长的位置获得目标控制频率，并将获得的频率应用于滤波器。参考波长滤波器透过参考波长。光接收元件监测发射的参考波长以产生监测信号。

6. 发明申请

US20070171505A1 Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signal 有权
标题翻译：声光可调谐滤波器控制装置自动调节射频信号的频率和功率
公开(公告)号：US20070171505A1
公开(公告)日：2007-07-26
申请号：US11443114
申请日：2006-05-31
申请人： Masaji Noguchi , Tomohiro Ueno , Goji Nakagawa , Yutaka Kai
发明人： Masaji Noguchi , Tomohiro Ueno , Goji Nakagawa , Yutaka Kai
IPC分类号： G02F1/11
CPC分类号： G02F1/113
摘要： An AOTF control apparatus, which applies an RF signal to an AOTF to allow a selected light to pass through the AOTF, includes: a first calculating unit calculating a relationship between a frequency of the RF signal and a wavelength of the selected light based on a frequency of the RF signal that allows a reference light to pass through the AOTF; and a second calculating unit calculating a relationship between a power of the RF signal and an attenuation amount of the selected light based on an input/output power of the reference signal at the input/output of the AOTF.
摘要翻译： AOTF控制装置，其向AOTF施加RF信号以允许所选择的光通过AOTF，包括：第一计算单元，基于所述第一计算单元计算所述RF信号的频率与所选择的光的波长之间的关系允许参考光通过AOTF的RF信号的频率; 以及第二计算单元，基于在AOTF的输入/输出处的参考信号的输入/输出功率来计算RF信号的功率与所选择的光的衰减量之间的关系。

7. 发明申请

US20120257272A1 OPTICAL AMPLIFICATION APPARATUS 有权
标题翻译：光学放大装置
公开(公告)号：US20120257272A1
公开(公告)日：2012-10-11
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
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。

8. 发明授权

US07405858B2 Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signal 有权
标题翻译：声光可调谐滤波器控制装置自动调节射频信号的频率和功率
公开(公告)号：US07405858B2
公开(公告)日：2008-07-29
申请号：US11443114
申请日：2006-05-31
申请人： Masaji Noguchi , Tomohiro Ueno , Goji Nakagawa , Yutaka Kai
发明人： Masaji Noguchi , Tomohiro Ueno , Goji Nakagawa , Yutaka Kai
IPC分类号： G02F1/11 , G02F1/33 , G02B26/00 , G02B26/08
CPC分类号： G02F1/113
摘要： An AOTF control apparatus, which applies an RF signal to an AOTF to allow a selected light to pass through the AOTF, includes: a first calculating unit calculating a relationship between a frequency of the RF signal and a wavelength of the selected light based on a frequency of the RF signal that allows a reference light to pass through the AOTF; and a second calculating unit calculating a relationship between a power of the RF signal and an attenuation amount of the selected light based on an input/output power of the reference signal at the input/output of the AOTF.
摘要翻译： AOTF控制装置，其向AOTF施加RF信号以允许所选择的光通过AOTF，包括：第一计算单元，基于所述第一计算单元计算所述RF信号的频率与所选择的光的波长之间的关系允许参考光通过AOTF的RF信号的频率; 以及第二计算单元，基于在AOTF的输入/输出处的参考信号的输入/输出功率来计算RF信号的功率与所选择的光的衰减量之间的关系。

9. 发明授权

US09019593B2 Optical amplification apparatus 有权
标题翻译：光放大装置
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。

10. 发明申请

US20060023996A1 Optical add/drop multiplexer 审中-公开
标题翻译：光分插复用器
公开(公告)号：US20060023996A1
公开(公告)日：2006-02-02
申请号：US11092881
申请日：2005-03-30
申请人： Goji Nakagawa , Yutaka Kai
发明人： Goji Nakagawa , Yutaka Kai
IPC分类号： G02B6/28
CPC分类号： H04J14/0297 , H04J14/0206 , H04J14/0212 , H04J14/0213 , H04J14/022 , H04J14/0283 , H04J14/0286
摘要： An optical add/drop multiplexer of the invention includes: a wavelength blocker for blocking signal light having at least one wavelength out of a plurality of signal lights included in WDM light supplied from a transmission line and passing the other signal light; an optical coupler for multiplexing signal light having the same wavelength as that of the signal light blocked by the wavelength blocker to signal light passed through the wavelength blocker; a WDM amplifier for amplifying the WDM light multiplexed by the optical coupler and outputting the amplified light; and an optical branch coupler for branching the WDM light output from the WDM amplifier into two lights, extracting signal light having at least one wavelength different from the wavelength of signal light multiplexed by the optical coupler from one of the branched lights, and outputting the other branched light to the transmission line. With the configuration, a small and cheap optical add/drop multiplexer as a flexible OADM node can be provided.
摘要翻译：本发明的光分插复用器包括：波长阻断器，用于阻挡从传输线提供的WDM光中包括的多个信号光中的至少一个波长的信号光，并使另一个信号光通过; 用于对与波长阻挡器阻挡的信号光波长相同的信号光进行信号的光耦合器，用于对通过波长阻挡器的光信号进行信号; WDM放大器，用于放大由光耦合器复用的WDM光，并输出放大的光; 以及光分支耦合器，用于将从WDM放大器输出的WDM光分支到两个光中，从分支灯之一提取具有与由光耦合器复用的信号光的波长不同的至少一个波长的信号光，并输出另一个分支的光到传输线。通过该配置，可以提供作为灵活OADM节点的小型廉价的光分插复用器。

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