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    • 4. 发明申请
    • OPTICAL TRANSMISSION CIRCUIT
    • 光传输电路
    • US20090245812A1
    • 2009-10-01
    • US12360147
    • 2009-01-27
    • Shigeru TOKITAHiroo MatsueAkira Kuwahara
    • Shigeru TOKITAHiroo MatsueAkira Kuwahara
    • H04B10/04
    • H01S5/02284H01S5/0427
    • Provided is an optical transmission circuit capable of realizing a high-quality optical signal waveform with low power consumption. An optical transmission circuit (10) includes: a laser diode (800); a modulator (900) for supplying a differential modulation current to an anode terminal and a cathode terminal of the laser diode (800) through transmission lines (301 to 304); a current source (101) for supplying a forward bias current to the laser diode (800); and a magnetic sheet (wave absorber) (400) disposed so as to cover at least a part of the transmission lines (303 and 304). An impedance of the laser diode (800) is lower than characteristic impedances of the transmission lines (301 to 304) which are formed so that the characteristic impedances thereof are matched to an output impedance of the modulator (900).
    • 提供一种能够实现低功耗的高质量光信号波形的光传输电路。 光传输电路(10)包括:激光二极管(800); 用于通过传输线(301至304)向所述激光二极管(800)的阳极端子和阴极端子提供差分调制电流的调制器(900); 用于向激光二极管(800)提供正向偏置电流的电流源(101); 以及设置成覆盖传输线(303和304)的至少一部分的磁性片(波吸收体)(400)。 激光二极管(800)的阻抗低于形成为使得其特性阻抗与调制器(900)的输出阻抗匹配的传输线(301〜304)的特性阻抗。
    • 5. 发明授权
    • Optical transmission circuit
    • 光传输电路
    • US08131158B2
    • 2012-03-06
    • US12360147
    • 2009-01-27
    • Shigeru TokitaHiroo MatsueAkira Kuwahara
    • Shigeru TokitaHiroo MatsueAkira Kuwahara
    • H04B10/04
    • H01S5/02284H01S5/0427
    • Provided is an optical transmission circuit capable of realizing a high-quality optical signal waveform with low power consumption. An optical transmission circuit (10) includes: a laser diode (800); a modulator (900) for supplying a differential modulation current to an anode terminal and a cathode terminal of the laser diode (800) through transmission lines (301 to 304); a current source (101) for supplying a forward bias current to the laser diode (800); and a magnetic sheet (wave absorber) (400) disposed so as to cover at least a part of the transmission lines (303 and 304). An impedance of the laser diode (800) is lower than characteristic impedances of the transmission lines (301 to 304) which are formed so that the characteristic impedances thereof are matched to an output impedance of the modulator (900).
    • 提供一种能够实现低功耗的高质量光信号波形的光传输电路。 光传输电路(10)包括:激光二极管(800); 用于通过传输线(301至304)向所述激光二极管(800)的阳极端子和阴极端子提供差分调制电流的调制器(900); 用于向激光二极管(800)提供正向偏置电流的电流源(101); 以及设置成覆盖传输线(303和304)的至少一部分的磁性片(波吸收体)(400)。 激光二极管(800)的阻抗低于形成为使得其特性阻抗与调制器(900)的输出阻抗匹配的传输线(301〜304)的特性阻抗。
    • 6. 发明授权
    • Optical transmission module
    • 光传输模块
    • US07035302B2
    • 2006-04-25
    • US10384509
    • 2003-03-06
    • Tomokazu TanakaCleitus AntonyHiroo MatsueHideki MurakawaTadashi Hatano
    • Tomokazu TanakaCleitus AntonyHiroo MatsueHideki MurakawaTadashi Hatano
    • H01S3/00
    • H01S5/042H01S5/0427
    • The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A terminal of the laser diode and the first switch are connected in series through a first transmission line and a first capacitor, the other terminal of the laser diode and the second switch are connected in series through a second transmission line and a second capacitor. The current driven by the second switch is terminated by a resistor connected to the first switch and the current driven by the first switch is terminated by a resistor connected to the second switch. Thus, the laser diode is modulated bidirectionally.
    • 本发明提供了一种具有产生激光束的激光二极管和设置有第一开关和第二开关的差分型电流开关以便向激光二极管提供调制电流的光传输模块。 激光二极管和第一开关的端子通过第一传输线和第一电容器串联连接,激光二极管的另一端和第二开关通过第二传输线和第二电容器串联连接。 由第二开关驱动的电流被连接到第一开关的电阻器终止,并且由第一开关驱动的电流由连接到第二开关的电阻端接。 因此,激光二极管被双向调制。