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    • 5. 发明授权
    • DC power supply apparatus
    • 直流电源装置
    • US5926381A
    • 1999-07-20
    • US159485
    • 1998-09-23
    • Haruo MoriguchiToru AraiToshikazu FujiyoshiMasayuki OnoSatoshi HamadaHideo Ishii
    • Haruo MoriguchiToru AraiToshikazu FujiyoshiMasayuki OnoSatoshi HamadaHideo Ishii
    • H02M3/28H02M3/335H02M7/25H02M7/5387
    • H02M7/5387H02M7/25
    • A DC power supply apparatus includes an input-side rectifier which rectifies an input AC voltage and supplies the rectified voltage to a voltage-boosting converter. The voltage-boosting converter converts the supplied voltage to a voltage of a predetermined magnitude. The predetermined magnitude voltage is, then, converted to a high-frequency voltage by an inverter and applied to a primary winding of a transformer. An output-side rectifier rectifies a high-frequency voltage induced in a secondary winding of the transformer. The inverter includes IGBTs and diodes, which are connected in a full-bridge configuration. A capacitor is connected in parallel with each IGBT. When the IGBTs are rendered conductive by the charging and discharging of the capacitors, no current flows through the IGBTs, and when the IGBTs are rendered nonconductive, the voltages applied to the IGBTs are made to become zero.
    • 直流电源装置包括输入侧整流器,其对输入的交流电压进行整流,并将整流的电压提供给升压转换器。 升压转换器将所提供的电压转换成预定大小的电压。 然后,通过逆变器将预定的幅度电压转换成高频电压并施加到变压器的初级绕组。 输出侧整流器对变压器次级绕组感应的高频电压进行整流。 逆变器包括以全桥配置连接的IGBT和二极管。 电容器与每个IGBT并联连接。 当通过电容器的充放电导致IGBT导通时,IGBT中不会流过电流,当IGBT变为不导通时,施加于IGBT的电压为零。
    • 6. 发明授权
    • Optical amplifier, method for optical amplification and optical transmission system
    • 光放大器,光放大方法及光传输系统
    • US06704137B2
    • 2004-03-09
    • US09938518
    • 2001-08-27
    • Satoshi Hamada
    • Satoshi Hamada
    • H01S300
    • H01S3/06754H01S3/094011H01S3/09415H01S3/1301
    • The present invention provides an optical amplifier for amplifying and outputting an input optical signal, and the optical amplifier comprises an erbium-doped optical fiber (EDF) (3), a laser diode (1), a WDM coupler (2), and a temperature setting control unit (8). A pumping light outputted from the laser diode (1) is divided at a given wavelength by the WDM coupler (2) to a light component on long wavelength side and a light component on short wavelength side, and these are separately outputted. Among these light components, the light component on long wavelength side is inputted to the EDF (3) as a forward pumping light. The light component on short wavelength side is inputted as a backward pumping light. The temperature setting control unit (8) sets a ratio of forward pumping light intensity to backward pumping light intensity and controls temperature of the laser light source according to the preset value.
    • 本发明提供了一种用于放大和输出输入光信号的光放大器,光放大器包括掺铒光纤(EDF)(3),激光二极管(1),WDM耦合器(2)和 温度设定控制部(8)。 从激光二极管(1)输出的泵浦光通过WDM耦合器(2)以给定波长被分割成长波长侧的光分量和短波长侧的光分量,并分别输出。 在这些光分量中,长波长侧的光分量作为正向泵浦光输入到EDF(3)。 短波长侧的光分量作为反向泵浦光输入。 温度设定控制部(8)设定正向泵浦光强度与反向泵浦光强度的比例,并根据预设值控制激光光源的温度。
    • 9. 发明授权
    • WDM optical amplifier with heat radiation from laser source to amplification medium
    • WDM光放大器具有从激光源到放大介质的热辐射
    • US07835069B2
    • 2010-11-16
    • US12058196
    • 2008-03-28
    • Satoshi Hamada
    • Satoshi Hamada
    • H04B10/17H04B10/12
    • H01S3/06754H01S3/06704H01S3/09415H01S3/10007H01S5/02248H01S5/02469
    • An optical direct amplifier lowers the power consumption with a simple structure at a low cost. This amplifier includes an optical amplification medium (e.g., optical fiber) that carries out an optical amplification function in response to optical excitation by an exciting light source (e.g., semiconductor laser); a temperature controller for controlling the temperature of the amplification medium; a heat radiating member for radiating the heat generated by the light source; and a heat transmission regulator (e.g., Peltier module) for allowing the heat to flow into the amplification medium from the light source and for preventing the heat from flowing into the light source from the amplification medium. The amplification medium is heated by application of the heat generated by the light source by way of the heat radiating member and the heat transmission regulator.
    • 光学直接放大器以低成本以简单的结构降低功耗。 该放大器包括响应于激发光源(例如半导体激光器)的光激发而执行光放大功能的光放大介质(例如,光纤); 温度控制器,用于控制放大介质的温度; 用于照射由光源产生的热的散热构件; 以及用于允许热量从光源流入放大介质并用于防止热量从放大介质流入光源的传热调节器(例如珀尔贴模块)。 通过利用散热构件和传热调节器施加由光源产生的热来加热放大介质。
    • 10. 发明授权
    • Optical amplifier and method for controlling the same
    • 光放大器及其控制方法
    • US5923463A
    • 1999-07-13
    • US939877
    • 1997-09-29
    • Satoshi Hamada
    • Satoshi Hamada
    • H04B10/03H01S3/10H01S3/13H04B10/07H04B10/079H04B10/2507H04B10/29H04B10/294G02B6/00
    • H04B10/2931H01S3/1301H01S3/10015
    • A wavelength within an amplifying wavelength band of an optical amplifier is introduced into the optical amplifier at all times or when an interruption and/or reduction of a ray of input light is detected. When the interruption and/or reduction of the input light is detected, an output of the excited light is interrupted or reduced, an optical switch is controlled so that the input light is interrupted, and after the input light is restored, a transmittivity of the optical switch is progressively increased or the input light is passed for a constant period of protection time. Thus, when the input light has been restored, a light surge may be reduced without any adverse affect of a reverse distribution of the optical amplifier. In the case where the input light is abruptly raised during a period of moderation of the excited level, it is possible to suppress the light surge caused by the long service life due to the natural discharge of the excited level.
    • 光放大器的放大波长带内的波长始终被引入到光放大器中,或者当检测到输入光线的中断和/或减少时。 当检测到输入光的中断和/或减少时,激发光的输出被中断或减小,控制光开关使得输入光被中断,并且在输入光恢复之后,透射率 光开关逐渐增加或输入光通过一段恒定的保护时间。 因此,当输入光已经恢复时,可以减小光浪涌而没有光放大器的反向分布的任何不利影响。 在激励电平调节期间输入光突然上升的情况下,可以抑制由于激发电平的自然放电而导致的使用寿命长的光浪涌。