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公开(公告)号：US08953655B2
公开(公告)日：2015-02-10
申请号：US14074487
申请日：2013-11-07
发明人： Akihiro Moto
CPC分类号： H01S5/0427 , H01S5/068
摘要： A laser diode (LD) driver to suppress the excess emission of an LD is disclosed. The LD driver has the shunt configuration with a driving transistor connected in parallel to the LD to shunt the bias current provided to the LD. The driver further provides a protection circuit to divide the bias current when the bias current is active but the driving transistor is turned off at an instant of the power on and off of the LD driver.
摘要翻译： 公开了一种用于抑制LD的过量发射的激光二极管（LD）驱动器。 LD驱动器具有并联配置，驱动晶体管与LD并联连接，以分流提供给LD的偏置电流。 当偏置电流有效时，驱动器还提供一个保护电路来分压偏置电流，但驱动晶体管在LD驱动器的电源接通和断开时断开。
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公开(公告)号：US08737442B2
公开(公告)日：2014-05-27
申请号：US13830085
申请日：2013-03-14
发明人： Akihiro Moto
IPC分类号： H01S3/00
CPC分类号： H01S5/06233 , H01S5/0428 , H01S5/06216 , H01S5/06226 , H01S5/0683 , H04B10/504
摘要： A shunt driver for driving an LD is disclosed. The shunt driver has the push-pull arrangement with the high side driver and the low side driver. The high side driver is driven by a positive phase signal superposed with a negative phase signal with a delay and a less amplitude with respect to the positive phase signal. The low side driver is driven by a negative phase signal superposed with a positive signal with a delay and a less amplitude compared to the positive phases signal. Adjusting the magnitude of the superposed signals, the driving current for the LD has the peaking in the rising and falling edges thereof.
摘要翻译： 公开了用于驱动LD的分流驱动器。 分流驱动器具有高侧驱动器和低侧驱动器的推拉装置。 高侧驱动器由正相信号驱动，该正相信号与相位正相信号具有延迟和较小振幅的负相位信号叠加。 与正相信号相比，低侧驱动器由与负信号叠加的正相位信号驱动，延迟和幅度较小。 调整叠加信号的大小时，LD的驱动电流在其上升沿和下降沿达到峰值。
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3.发明授权Differential circuit compensating gain enhancement due to self heating of transistors 有权由于晶体管的自身加热，差分电路补偿增益公开(公告)号：US08941440B2
公开(公告)日：2015-01-27
申请号：US13778320
申请日：2013-02-27
发明人： Keiji Tanaka , Akihiro Moto , Yoshiyuki Sugimoto
CPC分类号： H03F3/4508 , H03F3/087 , H03F3/45085 , H03F3/45475 , H03F3/45556 , H03F2200/447 , H03F2203/45008 , H03F2203/45078
摘要： A differential circuit with a function to compensate the gain enhancement due to the self-heating of the transistor is disclosed. The differential circuit includes an equalizer unit coupled with one of paired transistors. The other of the paired transistor receives the input signal to be amplified. The base level, or the base-emitter bias, is oppositely modulated by the input signal through the common emitter, which causes the modification of the base current. The equalizer unit reduces the variation of the base level only in low frequencies where the self-heating effect of the transistor appears.
摘要翻译： 公开了一种具有补偿由于晶体管的自加热引起的增益增强的功能的差分电路。 差分电路包括与成对晶体管中的一个耦合的均衡器单元。 配对晶体管中的另一个接收要放大的输入信号。 基极电平或基极 - 发射极偏压通过共同发射极的输入信号相反调制，这导致基极电流的修改。 均衡器单元仅在晶体管的自发热效应出现的低频下降低基极电平的变化。
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公开(公告)号：US08649406B2
公开(公告)日：2014-02-11
申请号：US13689292
申请日：2012-11-29
发明人： Akihiro Moto
IPC分类号： H01S3/00
CPC分类号： H01S5/06233 , H01S5/0428 , H01S5/06216 , H01S5/06226 , H01S5/0683 , H03K17/60 , H03K17/6871 , H04B10/504
摘要： A shunt driver for driving an LD is disclosed. The shunt driver has the push-pull architecture with the high side driver and the low side driver. The high side driver is driven by a positive phase signal superposed with a signal with a phase opposite to the negative phase signal. The low side driver is driven by a negative phase signal superposed with a signal with a phase opposite to the positive phase signal. Adjusting the magnitude of the superposed signals, the driving current for the LD has the peaking in the rising and falling edges thereof.
摘要翻译： 公开了用于驱动LD的分流驱动器。 分流驱动器具有高侧驱动器和低侧驱动器的推挽结构。 高侧驱动器由与相位相反的信号叠加的正相信号驱动。 低侧驱动器由与正相信号相反的信号叠加的负相位信号驱动。 调整叠加信号的大小时，LD的驱动电流在其上升沿和下降沿达到峰值。
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