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1.发明授权Preamplifier, optical receiver, optical termination device, and optical communication system 有权前置放大器，光接收器，光终端设备和光通信系统公开(公告)号：US09450542B2
公开(公告)日：2016-09-20
申请号：US14413483
申请日：2013-01-16
申请人： Daisuke Mita , Masaki Noda , Masamichi Nogami
发明人： Daisuke Mita , Masaki Noda , Masamichi Nogami
CPC分类号： H03F3/08 , H03G3/3084
摘要： A current bypass circuit that passes part of a photocurrent output from a photodetector is connected to an input terminal of a current-to-voltage conversion amplifier circuit. A voltage obtained by level conversion of an output voltage by a voltage level conversion circuit is input into the current bypass circuit so that the current bypass circuit is turned on at a photocurrent that is smaller than the photocurrent at which a diode connected in parallel to a feedback resistor of the current-to-voltage conversion amplifier circuit is turned on. Consequently, the current-to-voltage conversion gain is switched in three stages according to the intensity of the photocurrent corresponding to an optical signal level.
摘要翻译： 将来自光电检测器的光电流输出的一部分的电流旁路电路连接到电流 - 电压转换放大器电路的输入端。 通过电压电平转换电路对输出电压进行电平转换而获得的电压被输入到电流旁路电路中，使得电流旁路电路以小于并联到二极管的二极管的光电流的光电流导通 电流 - 电压转换放大器电路的反馈电阻器被接通。 因此，根据与光信号电平对应的光电流的强度，电流 - 电压转换增益分三级切换。
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2.发明申请PREAMPLIFIER, OPTICAL RECEIVER, OPTICAL TERMINATION DEVICE, AND OPTICAL COMMUNICATION SYSTEM 有权前置放大器，光接收器，光学终端设备和光通信系统公开(公告)号：US20150207469A1
公开(公告)日：2015-07-23
申请号：US14413483
申请日：2013-01-16
申请人： Daisuke Mita , Masaki Noda , Masamichi Nogami
发明人： Daisuke Mita , Masaki Noda , Masamichi Nogami
CPC分类号： H03F3/08 , H03G3/3084
摘要： A current bypass circuit that passes part of a photocurrent output from a photodetector is connected to an input terminal of a current-to-voltage conversion amplifier circuit. A voltage obtained by level conversion of an output voltage by a voltage level conversion circuit is input into the current bypass circuit so that the current bypass circuit is turned on at a photocurrent that is smaller than the photocurrent at which a diode connected in parallel to a feedback resistor of the current-to-voltage conversion amplifier circuit is turned on. Consequently, the current-to-voltage conversion gain is switched in three stages according to the intensity of the photocurrent corresponding to an optical signal level.
摘要翻译： 将来自光电检测器的光电流输出的一部分的电流旁路电路连接到电流 - 电压转换放大器电路的输入端。 通过电压电平转换电路对输出电压进行电平转换而获得的电压被输入到电流旁路电路中，使得电流旁路电路以小于并联到二极管的二极管的光电流的光电流导通 电流 - 电压转换放大器电路的反馈电阻器被接通。 因此，根据与光信号电平对应的光电流的强度，电流 - 电压转换增益分三级切换。
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