公开(公告)号：US06930300B1

公开(公告)日：2005-08-16

申请号：US10209452

申请日：2002-07-30

申请人： Darin James Douma ,  Philip D. Shapiro ,  Linda Xiaorong Liu

发明人： Darin James Douma ,  Philip D. Shapiro ,  Linda Xiaorong Liu

IPC分类号： H01J40/14 ,  H04B10/158

CPC分类号： H04B10/69

摘要： The method and apparatus for monitoring a photo-detector generates a highly compliant mirror current across a broad range of photo-detector current levels. The apparatus for monitoring includes: a pair of bipolar transistors and a first non-linear isolation element. The pair of transistors are connected in a mirror configuration with a sense transistor one of the pair of transistors sensing a photo-detector current and with a mirror transistor one of the pair of transistors mirroring the photo-detector current with a mirror current. The first non-linear isolation element has at least two terminals a first of which couples to the collector of the mirror transistor. The first non-linear isolation element exhibits a non-linear voltage drop between the at least two terminals in response to varying levels of the mirror current to improve compliance between the mirror current and the detector current. Methods and means for monitoring a photo-detector are also disclosed.

摘要翻译： 用于监测光电检测器的方法和装置在宽范围的光电检测器电流水平上产生高度兼容的镜像电流。 用于监视的装置包括：一对双极晶体管和第一非线性隔离元件。 该对晶体管以反射镜配置与感测晶体管连接，该对晶体管中的一个感测光电检测器电流，并且与反射镜晶体管中的一对晶体管中的一个以镜像电流反射光检测器电流。 第一非线性隔离元件具有至少两个端子，其中第一端子耦合到反射镜晶体管的集电极。 第一非线性隔离元件响应于反射镜电流的变化水平而在至少两个端子之间呈现非线性电压降，以提高镜电流和检测器电流之间的一致性。 还公开了用于监测光检测器的方法和装置。

公开(公告)号：US06841815B2

公开(公告)日：2005-01-11

申请号：US10285204

申请日：2002-10-30

申请人： The' Linh Nguyen ,  Daniel K. Case ,  Philip D. Shapiro

发明人： The' Linh Nguyen ,  Daniel K. Case ,  Philip D. Shapiro

IPC分类号： H01L23/66 ,  H01L25/16 ,  H01L31/0203 ,  H05K1/02 ,  H05K1/18 ,  H05K1/11 ,  H01L29/76

CPC分类号： H05K1/0243 ,  H01L23/66 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L25/167 ,  H01L31/0203 ,  H01L2223/6644 ,  H01L2224/05553 ,  H01L2224/05554 ,  H01L2224/0603 ,  H01L2224/45144 ,  H01L2224/48011 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/4823 ,  H01L2224/48237 ,  H01L2224/49113 ,  H01L2224/49171 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01015 ,  H01L2924/01028 ,  H01L2924/01029 ,  H01L2924/01074 ,  H01L2924/01079 ,  H01L2924/014 ,  H01L2924/12042 ,  H01L2924/14 ,  H01L2924/19041 ,  H01L2924/19042 ,  H01L2924/19043 ,  H01L2924/19107 ,  H01L2924/30105 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/30111 ,  H05K1/023 ,  H05K1/189 ,  H05K2201/10022 ,  H05K2201/10121 ,  H05K2201/10522 ,  H01L2924/00014 ,  H01L2924/00

摘要： The optoelectronic device includes a photo diode and an amplifier, which amplifies output of the photo diode. The amplifier includes an input stage and an output stage. In one embodiment, the input stage has a series connection to a resistor, which is connected to a ground. The output stage has a connection to ground that does not overlap the series connection. In another embodiment, the input stage has a first connection to a bypass capacitor, which is connected to a power source. The output stage has a separate, second connection to the capacitor, which prevents high frequencies from flowing between the input stage and said output stage via a connection to the power source.

摘要翻译： 光电子器件包括光电二极管和放大器，其放大光电二极管的输出。 放大器包括输入级和输出级。 在一个实施例中，输入级与连接到地的电阻串联连接。 输出级具有与串联连接不重叠的接地连接。 在另一个实施例中，输入级具有连接到电源的旁路电容器的第一连接。 输出级具有与电容器的单独的第二连接，其防止高频率通过与电源的连接在输入级和所述输出级之间流动。

公开(公告)号：US07020170B1

公开(公告)日：2006-03-28

申请号：US10722087

申请日：2003-11-25

申请人： Philip D. Shapiro ,  Daniel K. Case ,  The'Linh Nguyen

发明人： Philip D. Shapiro ,  Daniel K. Case ,  The'Linh Nguyen

IPC分类号： H01S3/00

CPC分类号： H01S5/06213 ,  H01S5/042 ,  H01S5/0427 ,  H01S5/06832

摘要： An optoelectronic transceiver is provided that includes a laser driver in communication with an optical transmitter. The laser driver includes an operational amplifier having three stages and connected with an optical transmitter. The first stage includes a differential amplifier that receives a reference voltage input, corresponding to a desired magnitude of the optical transmitter voltage, and an optical transmitter voltage input, representing an optical output strength of the optical transmitter, and having transconductance that increases exponentially as a difference between the reference voltage and the optical transmitter voltage increases. The differential amplifier generates an output current based on the inputs. The second stage integrates the output current to generate a first output voltage. Finally, the third stage is configured to receive as input the first output voltage to generate a second output voltage approximately equal to the first output voltage, the second output voltage controlling an optical transmitter bias current.

摘要翻译： 提供了一种光电收发器，其包括与光发射器通信的激光驱动器。 激光驱动器包括具有三级并与光发射器连接的运算放大器。 第一级包括差分放大器，其接收对应于光发射机电压的期望幅度的参考电压输入和表示光发射机的光输出强度的光发射机电压输入，并且具有以指数方式增加的跨导 参考电压和光发射机电压之间的差异增大。 差分放大器基于输入产生输出电流。 第二级集成输出电流以产生第一输出电压。 最后，第三级被配置为接收作为输入的第一输出电压以产生大致等于第一输出电压的第二输出电压，第二输出电压控制光发送器偏置电流。

公开(公告)号：US06573789B2

公开(公告)日：2003-06-03

申请号：US10147677

申请日：2002-05-16

申请人： Philip D. Shapiro

发明人： Philip D. Shapiro

IPC分类号： H03F136

CPC分类号： H03F1/38

摘要： A signal processing circuit using positive feedback while keeping the open loop gain of the circuit less than 1 to avoid oscillation. The circuit includes a floating signal source, a low gain amplifier, a feedback element, and a second stage circuit. The floating signal source produces a voltage that is impressed across the feedback element by the feedback system. The feedback element processes the voltage into an output current. The output current is passed through an output current node to the second stage circuit where the output current can be used as a current reference or be further processed. The output from the low gain amplifier may be used as a voltage output node that provides a voltage that is an amplification of the voltage produced by the floating signal source. The signal processing circuit may be embedded in another circuit, including additional stages of the signal processing circuit.

公开(公告)号：US06693487B2

公开(公告)日：2004-02-17

申请号：US09925176

申请日：2001-08-08

申请人： Philip D. Shapiro

发明人： Philip D. Shapiro

IPC分类号： H03F138

CPC分类号： H03F1/38

摘要： A signal processing circuit using positive feedback while keeping the open loop gain of the circuit less than 1 to avoid oscillation. The circuit includes a floating signal source, a low gain amplifier, a feedback element, and a second stage circuit. The floating signal source produces a voltage that is impressed across the feedback element by the feedback system. The feedback element processes the voltage into an output current. The output current is passed through an output current node to the second stage circuit where the output current can be used as a current reference or be further processed. The output from the low gain amplifier may be used as a voltage output node that provides a voltage that is an amplification of the voltage produced by the floating signal source. The signal processing circuit may be embedded in another circuit, including additional stages of the signal processing circuit.

摘要翻译： 使用正反馈的信号处理电路，同时保持电路的开环增益小于1，以避免振荡。 该电路包括浮动信号源，低增益放大器，反馈元件和第二级电路。 浮动信号源产生通过反馈系统在反馈元件上施加的电压。 反馈元件将电压处理成输出电流。 输出电流通过输出电流节点传递到第二级电路，其中输出电流可以用作电流参考值或被进一步处理。 来自低增益放大器的输出可以用作提供作为放大浮动信号源产生的电压的电压的电压输出节点。 信号处理电路可以嵌入在另一个电路中，包括信号处理电路的附加级。

公开(公告)号：US06728276B2

公开(公告)日：2004-04-27

申请号：US10285203

申请日：2002-10-30

申请人： Philip D. Shapiro ,  Daniel K. Case ,  The′ Linh Nguyen

发明人： Philip D. Shapiro ,  Daniel K. Case ,  The′ Linh Nguyen

IPC分类号： H01S300

CPC分类号： H01S5/06213 ,  H01S5/042 ,  H01S5/0427 ,  H01S5/06832

摘要： The present invention relates generally to laser diodes, and particularly to an operational amplifier able to switch laser diodes on and off quickly without adversely affecting data transmission by the laser diodes. A differential amplifier included in an operational amplifier has a high transconductance when a laser diode is first turned on and a low, near constant transconductance when the laser diode is transmitting data. The operational amplifier is preferably incorporated in optoelectronic transceivers used in passive optical networks. Switching laser diodes on and off quickly enables more efficient use of network bandwidth in such passive optical networks.

摘要翻译： 本发明一般涉及激光二极管，特别涉及能够快速地切换激光二极管的运算放大器，而不会不利地影响激光二极管的数据传输。 包括在运算放大器中的差分放大器当激光二极管首先导通时具有高跨导，并且当激光二极管正在传输数据时具有低的，接近恒定的跨导。 运算放大器优选地并入用于无源光网络的光电收发器中。 开关激光二极管快速启用可以更有效地利用这种无源光网络中的网络带宽。

公开(公告)号：US6121838A

公开(公告)日：2000-09-19

申请号：US221673

申请日：1998-12-23

申请人： William R. Freeman ,  Philip D. Shapiro

发明人： William R. Freeman ,  Philip D. Shapiro

IPC分类号： H03F1/30 ,  H03F3/345 ,  H03F3/45

CPC分类号： H03F1/306 ,  H03F3/3455 ,  H03F3/45381 ,  H03F3/45766 ,  H03F3/45991 ,  H03F2203/45542 ,  H03F2203/45702

摘要： A precision GaAs low-voltage DC amplifier includes a level shift circuit, an amplifier and a first and a second bias control circuit. The level shift circuit shifts an input signal to generate a level shifted input signal, whose bias level is controlled by a first bias control voltage. The amplifier amplifies the level shifted input signal to generate an output signal. The bias level of the output signal is controlled by a second bias control voltage. The first bias control circuit insures that the first bias control voltage varies as necessary with temperature to hold constant the bias level of the level shifted input signal. The second bias control circuit insures that the second bias control voltage varies as necessary with temperature to hold constant the bias level of the output signal.

摘要翻译： 精密GaAs低压DC放大器包括电平移位电路，放大器以及第一和第二偏置控制电路。 电平移位电路移位输入信号以产生电平移位输入信号，其偏置电平由第一偏置控制电压控制。 放大器放大电平移位输入信号以产生输出信号。 输出信号的偏置电平由第二偏置控制电压控制。 第一偏置控制电路确保第一偏置控制电压随着温度而变化，以保持电平移位输入信号的偏置电平恒定。 第二偏置控制电路确保第二偏压控制电压随温度而变化，以保持输出信号的偏置电平恒定。