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1. 发明申请

US20050249444A1 Optical transmitter and its control method 失效
标题翻译：光发射机及其控制方法
公开(公告)号：US20050249444A1
公开(公告)日：2005-11-10
申请号：US10628553
申请日：2003-07-29
申请人： Keisuke Imai , Toru Yamazaki , Kakuji Inoue , Setsuo Misaizu , Yasunori Nagakubo
发明人： Keisuke Imai , Toru Yamazaki , Kakuji Inoue , Setsuo Misaizu , Yasunori Nagakubo
IPC分类号： G02F1/03 , G02F1/01 , G02F1/035
CPC分类号： G02F1/0123 , H04B10/505 , H04B10/50572 , H04B10/50575 , H04B10/58
摘要： An optical transmitter comprises an amplitude modulation unit performing amplitude modulation of only a one-side amplitude of a main signal with a low-frequency signal having a predetermined frequency. An optical modulator receives an input signal generated after the one-side amplitude modulation, and modulates an incoming light in response to the received signal in accordance with a predetermined modulation-characteristic curve to output an optical output signal. An operating point control unit applies a predetermined bias voltage to the optical modulator to control a level of the input signal substantially applied to the modulation-characteristic curve so that the one-side amplitude of the main signal is applied to a minimum portion of the modulation-characteristic curve of the optical modulator.
摘要翻译：光发射机包括幅度调制单元，其具有仅具有具有预定频率的低频信号的主信号的单侧振幅的幅度调制。光调制器接收在单侧幅度调制之后产生的输入信号，并且根据预定的调制特性曲线响应于接收信号调制入射光以输出光输出信号。操作点控制单元向光调制器施加预定的偏置电压以控制基本上施加到调制特性曲线的输入信号的电平，使得主信号的单侧振幅被施加到调制的最小部分 - 光学调制器的特征曲线。

2. 发明授权

US5900959A Optical transmitter, optical communication system and optical communication method 失效
标题翻译：光发射机，光通信系统和光通信方式
公开(公告)号：US5900959A
公开(公告)日：1999-05-04
申请号：US763110
申请日：1996-12-10
申请人： Mitsuharu Noda , Setsuo Misaizu , Motoyoshi Sekiya , Yasunori Nagakubo
发明人： Mitsuharu Noda , Setsuo Misaizu , Motoyoshi Sekiya , Yasunori Nagakubo
IPC分类号： H04B10/00 , H04B10/071 , H04B10/2537 , H04B10/54 , H04B10/588 , H04B10/04
CPC分类号： H04B10/2537
摘要： An optical transmitter comprises a first unit for generating an optical signal having a bandwidth given by a main signal, a second unit modulating the optical signal according to a control signal to extend the bandwidth of the optical signal, a third unit extracting backward light including SBS(stimulated Brillouin scattering) light generated in an optical fiber transmission line, and a fourth unit performing feedback control so that the power of the SBS light becomes substantially constant. Through the structure of the optical transmitter good transmission characteristics of a main signal are obtained and the suppression of the SBS is allowed.
摘要翻译：光发射机包括：第一单元，用于产生具有由主信号给出的带宽的光信号;第二单元，根据控制信号调制光信号以扩展光信号的带宽;第三单元，提取包括SBS的向后光（受激布里渊散射）光，以及执行反馈控制的第四单元，使得SBS光的功率变得基本恒定。通过光发射机的结构获得了主信号的良好传输特性，并允许SBS的抑制。

3. 发明授权

US06229833B1 Laser diode protecting circuit and laser driving current control circuit 有权
标题翻译：激光二极管保护电路和激光驱动电流控制电路
公开(公告)号：US06229833B1
公开(公告)日：2001-05-08
申请号：US09274248
申请日：1999-03-23
申请人： Mitsuharu Noda , Motoyoshi Sekiya , Setsuo Misaizu , Tetsuya Kiyonaga , Nobuaki Sato , Yasunori Nagakubo
发明人： Mitsuharu Noda , Motoyoshi Sekiya , Setsuo Misaizu , Tetsuya Kiyonaga , Nobuaki Sato , Yasunori Nagakubo
IPC分类号： H01S300
CPC分类号： H01S5/06825 , H01S5/042 , H01S5/06804
摘要： Disclosed is a laser diode protecting circuit adapted to prevent a laser diode from producing an excessive emission when the laser diode is driven at low temperature, thereby assuring that the laser diode will not be damaged or degraded in terms of its characteristic. When the laser diode is started at low temperature, a laser diode protecting circuit has a power monitor circuit for monitoring backward power of the laser diode and a laser diode current limiting circuit for limiting the laser diode current when the backward power becomes equal to the set power. When the laser diode temperature subsequently rises and the backward power falls below the set power, an automatic current control circuit performs automatic current control in such a manner that the laser diode current attains a set current value. Alternatively, a temperature monitor circuit monitors the temperature of the laser diode and the laser diode current limiting circuit limits the laser diode current when the monitored temperature of the laser diode is less than the set temperature. When the laser diode temperature exceeds the set temperature, the automatic current control circuit performs automatic current control in such a manner that the laser diode attains the set current value.
摘要翻译：公开了一种激光二极管保护电路，其适于在激光二极管在低温下被驱动时防止激光二极管产生过多的发射，从而确保激光二极管在其特性方面不会被损坏或劣化。当激光二极管在低温下启动时，激光二极管保护电路具有用于监视激光二极管反向功率的功率监控电路和激光二极管限流电路，用于在反向功率等于设定值时限制激光二极管电流功率。当激光二极管温度随后上升并且反向功率下降到设定功率以下时，自动电流控制电路以激光二极管电流达到设定电流值的方式进行自动电流控制。或者，温度监视电路监测激光二极管的温度，激光二极管限流电路在激光二极管的监视温度小于设定温度时限制激光二极管电流。当激光二极管温度超过设定温度时，自动电流控制电路以激光二极管达到设定电流值的方式进行自动电流控制。

4. 发明授权

US5680246A Optical amplifier and optical transmission apparatus 失效
标题翻译：光放大器和光传输装置
公开(公告)号：US5680246A
公开(公告)日：1997-10-21
申请号：US412290
申请日：1995-03-28
申请人： Tsukasa Takahashi , Hiroyuki Itou , Yuji Tamura , Michikazu Shima , Kazuo Yamane , Yumiko Kawasaki , Keisuke Imai , Yoshinori Ohkuma , Kazuhiro Suzuki , Yasunori Nagakubo , Takashi Tsuda , Yuji Miyaki
发明人： Tsukasa Takahashi , Hiroyuki Itou , Yuji Tamura , Michikazu Shima , Kazuo Yamane , Yumiko Kawasaki , Keisuke Imai , Yoshinori Ohkuma , Kazuhiro Suzuki , Yasunori Nagakubo , Takashi Tsuda , Yuji Miyaki
IPC分类号： H01S3/07 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/13 , H01S3/131 , H04B10/07 , H04B10/2507 , H04B10/29 , H04B10/293 , H04B10/564 , H04B10/572 , H01S3/00
CPC分类号： H04B10/564 , H01S3/1301 , H04B10/077 , H04B10/07955 , H04B10/2912 , H04B10/2931 , H01S3/06754
摘要： The optical amplifier includes a doped fiber doped with a rare earth element, a pumping light source, means for introducing signal light and pumping light into the doped fiber, detection means for detecting whether or not amplified signal light is included in light outputted from the doped fiber, and means for decreasing the intensity of the pumping light when it is detected that amplified signal light is not included. It can be possible to eliminate an influence of an optical surge arising from a characteristic of the doped fiber.
摘要翻译：光放大器包括掺杂有稀土元素的掺杂光纤，泵浦光源，用于将信号光和泵浦光引入掺杂光纤的装置，用于检测放大信号光是否包含在从掺杂光光纤，以及当检测到不包括放大信号光时降低泵浦光强度的装置。可以消除由掺杂光纤的特性引起的光学浪涌的影响。

5. 发明授权

US5973812A Optical transmitter and optical communication system 失效
标题翻译：光发射机和光通信系统
公开(公告)号：US5973812A
公开(公告)日：1999-10-26
申请号：US874666
申请日：1997-06-13
申请人： Keisuke Imai , Yasunori Nagakubo
发明人： Keisuke Imai , Yasunori Nagakubo
IPC分类号： H04B10/516 , H04B10/2537 , H04B10/61 , H04B10/00
CPC分类号： H04B10/2537
摘要： An optical transmitter and an optical communication system, each for providing a good transmission characteristic of a main signal and allowing suppression of SBS (stimulated Brillouin scattering). The optical transmitter comprises a light source for outputting a carrier beam, an optical modulator for modulating the carrier beam based on a main signal and sending out an optical signal into an optical fiber transmission line, an oscillator for outputting a low frequency signal, a first circuit for frequency or phase modulating the carrier beam based on the low frequency signal, and a second circuit for superposing an opposite phase signal having a phase opposite to that of the low frequency signal with the main signal and supplying a resulting signal to the optical modulator.
摘要翻译：一种光发射机和光通信系统，每个用于提供主信号的良好传输特性并允许抑制SBS（受激布里渊散射）。光发射机包括用于输出载波束的光源，用于基于主信号调制载波的光调制器，并将光信号发送到光纤传输线，用于输出低频信号的振荡器，第一基于所述低频信号对所述载波进行频率或相位调制的电路，以及用于将与所述主信号具有与所述低频信号的相位相反的相位的相反相位信号叠加并将所得信号提供给所述光调制器的第二电路。

6. 发明授权

US07648289B2 Module having a handle to be operated to attach the module to a cage 失效
标题翻译：模块具有用于将模块附接到笼子的手柄
公开(公告)号：US07648289B2
公开(公告)日：2010-01-19
申请号：US12078060
申请日：2008-03-26
申请人： Makoto Miyoshi , Kazuya Sasaki , Akihiko Hayashi , Shinichi Aoki , Yasunori Nagakubo
发明人： Makoto Miyoshi , Kazuya Sasaki , Akihiko Hayashi , Shinichi Aoki , Yasunori Nagakubo
IPC分类号： G02B6/36
CPC分类号： G02B6/4292 , G02B6/4201 , G02B6/4261
摘要： A module is configured to be attached to a cage. A handle is rotatable about a rotation shaft between an accommodated position where the module is mounted to the cage and a withdrawal position where the module can be withdrawn from the cage. A resiliently-bendable tongue piece performs engagement and disengagement between the module and the cage. A notch portion is provided to the tongue piece. A press portion is provided to the handle on a circumference having a center located on the rotation shaft of the handle, the press portion configured to contact with the notch portion when the handle is at the accommodated position. A cam rotatable with the handle so as to resiliently bend the tongue piece.
摘要翻译：模块被配置为附接到笼。手柄可绕旋转轴转动，该旋转轴在模块安装到保持架的容纳位置和模块可从保持架中取出的取出位置之间旋转。弹性弯曲的舌片执行模块和保持架之间的接合和分离。切口部分设置在舌片上。在具有位于手柄的旋转轴上的中心的圆周上的手柄上设置有按压部，当手柄处于收纳位置时，按压部构造成与切口部接触。凸轮可与手柄一起旋转，以弹性地弯曲舌片。

7. 发明授权

US08280662B2 Optical system, optical module and threshold setting method 失效
标题翻译：光学系统，光模块和阈值设置方法
公开(公告)号：US08280662B2
公开(公告)日：2012-10-02
申请号：US12260150
申请日：2008-10-29
申请人： Yasunori Nagakubo
发明人： Yasunori Nagakubo
IPC分类号： G01R13/00 , G06F11/30
CPC分类号： G01R13/0281
摘要： An optical system includes an optical module having an optical reception unit that receives input light and output an electric signal related to received input light, and a processing unit having an identification unit that performs identification processing based on a threshold value on the electric signal input via a reception signal path from the optical reception unit. The optical module includes a threshold calculation unit that calculates the threshold value based on the electric signal from the optical reception unit and a signal path characteristic of the reception signal path from the optical reception unit to the identification unit, and the identification unit of the processing unit performs the identification processing based on the threshold value calculated by the threshold calculation unit. Thereby, the threshold value is optimized when the identifier is provided in the unit as a connection destination of the optical module.
摘要翻译：光学系统包括具有接收输入光并输出与接收到的输入光相关的电信号的光接收单元的光学模块，以及具有识别单元的处理单元，该识别单元基于通过电信号输入的电信号上的阈值进行识别处理来自光接收单元的接收信号路径。光模块包括阈值计算单元，该阈值计算单元基于来自光接收单元的电信号和从光接收单元到识别单元的接收信号路径的信号路径特性以及处理的识别单元计算阈值单元基于由阈值计算单元计算的阈值执行识别处理。因此，当在该单元中提供标识符作为光学模块的连接目的地时，阈值被优化。

8. 发明申请

US20080138092A1 Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus 失效
标题翻译：用于光接收装置的光接收装置和偏置电压控制方法
公开(公告)号：US20080138092A1
公开(公告)日：2008-06-12
申请号：US12000188
申请日：2007-12-10
申请人： Yasunori Nagakubo
发明人： Yasunori Nagakubo
IPC分类号： H04B10/06
CPC分类号： H04B10/6911
摘要： According to an optical-receiving apparatus including an APD converting input light into an electric signal and a bias-voltage-control method used for the optical-receiving apparatus, a multiplication factor appropriate for the APD is predetermined and a multiplication factor used for the APD can be maintained at the level of the predetermined multiplication factor at all times according to a change in the ambient temperature of the APD so that the intensity of input light-transmitted to the APD can be monitored with accuracy. The optical-receiving apparatus further includes a bias circuit generating a bias voltage applied to the APD based on a control signal, a temperature-monitor circuit monitoring the ambient temperature, and an operating circuit that stores data on the predetermined multiplication factor and that controls the bias circuit so that the multiplication factor corresponding to the monitored temperature becomes the predetermined multiplication factor.
摘要翻译：根据包含将输入光转换为电信号的APD和用于光接收装置的偏置电压控制方法的光接收装置，预先适用于APD的乘法系数和APD所用的乘法系数可以根据APD的环境温度的变化始终保持在预定倍增系数的水平，从而可以精确地监测传输到APD的输入光的强度。光接收装置还包括基于控制信号产生施加到APD的偏置电压的偏置电路，监视环境温度的温度监视电路和存储关于预定乘法因子的数据的操作电路，并且控制使得与所监视的温度相对应的倍增因子成为预定的倍增因子。

9. 发明授权

US5548435A Optical Transmitter 失效
标题翻译：光发射机
公开(公告)号：US5548435A
公开(公告)日：1996-08-20
申请号：US370165
申请日：1995-01-09
申请人： Yoko Tahara , Yasunori Nagakubo
发明人： Yoko Tahara , Yasunori Nagakubo
IPC分类号： H03K5/04 , H04B10/07 , H04B10/293 , H04B10/40 , H04B10/50 , H04B10/524 , H04B10/564 , H04B10/572 , H04B10/60 , H04B10/69 , H04B10/04
CPC分类号： H04B10/504 , H04B10/564
摘要： An optical transmitter for optimizing the duty ratio of a high-speed optical transmission signal has an output unit for providing an optical output signal according to an electric signal, a monitor circuit for providing an output representative signal related to the output of the output unit, a driver for determining the logical value of each bit of an input data signal according to a reference voltage and driving the output unit according to the determination, an input signal detector for providing an input representative signal according to the input data signal, and a duty ratio controller for comparing the input and output representative signals with each other and controlling the reference voltage to the driver so that the difference between the input and output representative signals is reduced, to thereby optimize the duty ratio of the optical output signal.
摘要翻译：用于优化高速光传输信号的占空比的光发射机具有用于根据电信号提供光输出信号的输出单元，用于提供与输出单元的输出有关的输出代表信号的监视电路，驱动器，用于根据参考电压确定输入数据信号的每个位的逻辑值，并根据该确定来驱动输出单元;输入信号检测器，用于根据输入数据信号提供输入代表信号;以及占空比比较控制器，用于将输入和输出代表信号彼此进行比较并控制到驱动器的参考电压，使得输入和输出代表信号之间的差减小，从而优化光输出信号的占空比。

10. 发明申请

US20080187271A1 Module having a handle to be operated to attach the module to a cage 失效
标题翻译：模块具有用于将模块附接到笼子的手柄
公开(公告)号：US20080187271A1
公开(公告)日：2008-08-07
申请号：US12078060
申请日：2008-03-26
申请人： Makoto Miyoshi , Kazuya Sasaki , Akihiko Hayashi , Shinichi Aoki , Yasunori Nagakubo
发明人： Makoto Miyoshi , Kazuya Sasaki , Akihiko Hayashi , Shinichi Aoki , Yasunori Nagakubo
IPC分类号： G02B6/36
CPC分类号： G02B6/4292 , G02B6/4201 , G02B6/4261
摘要： A module is configured to be attached to a cage. A handle is rotatable about a rotation shaft between an accommodated position where the module is mounted to the cage and a withdrawal position where the module can be withdrawn from the cage. A resiliently-bendable tongue piece performs engagement and disengagement between the module and the cage. A notch portion is provided to the tongue piece. A press portion is provided to the handle on a circumference having a center located on the rotation shaft of the handle, the press portion configured to contact with the notch portion when the handle is at the accommodated position. A cam rotatable with the handle so as to resiliently bend the tongue piece.
摘要翻译：模块被配置为附接到笼。手柄可绕旋转轴转动，该旋转轴在模块安装到保持架的容纳位置和模块可从保持架中取出的取出位置之间旋转。弹性弯曲的舌片执行模块和保持架之间的接合和分离。切口部分设置在舌片上。在具有位于手柄的旋转轴上的中心的圆周上的手柄上设置有按压部，当手柄处于收纳位置时，按压部构造成与切口部接触。凸轮可与手柄一起旋转，以弹性地弯曲舌片。

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