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1. 发明授权

US4358676A High speed edge illumination photodetector 失效
标题翻译：高速边缘照明光电探测器
公开(公告)号：US4358676A
公开(公告)日：1982-11-09
申请号：US189900
申请日：1980-09-22
申请人： Richard B. Childs , Peter S. Zory, Jr.
发明人： Richard B. Childs , Peter S. Zory, Jr.
IPC分类号： H01L31/0232 , H01L31/103 , H01J40/14
CPC分类号： H01L31/0232 , H01L31/1035
摘要： A high speed photodetector, for use with semi-conductor lasers or the like, is configured to receive light signals upon a beveled detector facet, directing the incident light through a semiconductor window layer to the detector's junction region.
摘要翻译：用于半导体激光器等的高速光电检测器被配置为在斜面检测器小面上接收光信号，将入射光通过半导体窗口层引导到检测器的接合区域。

2. 发明授权

US4348648A Transient suppression circuit 失效
标题翻译：瞬态抑制电路
公开(公告)号：US4348648A
公开(公告)日：1982-09-07
申请号：US60722
申请日：1979-07-25
申请人： Richard B. Childs
发明人： Richard B. Childs
IPC分类号： H01S5/068 , H01S3/10
CPC分类号： H01S5/06825
摘要： A transient suppression circuit is provided for starting up or turning off a light emitting diode, such as a diode laser. The circuit minimizes the possibility of turn-on or turn-off transients or overshoot, employing a time delayed voltage. A diode circuit is used which generates an output voltage equal to the higher of two voltages at its two inputs, one input being the time delayed voltage and the second being derived from photodetector which detects electromagnetic radiation emitted by the light emitting diode. The circuit also utilizes a three terminal voltage regulator which maintains a constant voltage between its sense terminal (output from the diode circuit) and its output terminal.
摘要翻译：提供了用于启动或关闭诸如二极管激光器的发光二极管的瞬态抑制电路。该电路通过使用延时电压来最小化导通或关断瞬变或过冲的可能性。使用二极管电路，其在其两个输入处产生等于两个电压中较高者的输出电压，一个输入是时间延迟电压，第二个输出源自检测由发光二极管发射的电磁辐射的光电检测器。该电路还采用三端电压调节器，它在其感测端子（二极管电路的输出）和其输出端子之间保持恒定的电压。

3. 发明授权

US5172068A Third-order predistortion linearization circuit 失效
标题翻译：三阶预失真线性化电路
公开(公告)号：US5172068A
公开(公告)日：1992-12-15
申请号：US704912
申请日：1991-05-21
申请人： Richard B. Childs
发明人： Richard B. Childs
IPC分类号： G06G7/24 , H03F1/32 , H04B10/155
CPC分类号： H04B10/505 , G06G7/24 , H03F1/3276 , H04B10/58
摘要： A predistortion circuit for cancelling third-order distortion products produced by a non-linear device includes a signal source which drives a first and second circuit branch each including a plurality of series connected diodes having approximately exponential transfer functions. The output signal taken as the summation of the two signals processed by the branch circuits is coupled through an amplifier to the device to be linearized. In an alternate predistortion configuration, the signal source drives a phase splitting means which produces two signals of equal amplitude but opposite phase, wherein each of the signals drives a respective one of the branch circuits. A phase combining means performs an out of-phase combination of the signals processed by the branch circuits.
摘要翻译：用于消除由非线性装置产生的三阶失真产物的预失真电路包括驱动第一和第二电路支路的信号源，每个包括多个具有近似指数传递函数的串联二极管。作为由分支电路处理的两个信号的总和的输出信号通过放大器耦合到要线性化的装置。在替代预失真配置中，信号源驱动相位分离装置，其产生相等振幅但相反相位的两个信号，其中每个信号驱动分支电路中的相应一个。相位组合装置执行由分支电路处理的信号的异相组合。

4. 发明授权

US5119392A Second-order predistortion circuit for use with laser diode 失效
标题翻译：用于激光二极管的二阶预测电路
公开(公告)号：US5119392A
公开(公告)日：1992-06-02
申请号：US616503
申请日：1990-11-21
申请人： Richard B. Childs
发明人： Richard B. Childs
IPC分类号： H01L33/00 , H01S5/06 , H03F1/32 , H04B10/155
CPC分类号： H04B10/504 , H03F1/3241 , H04B10/58
摘要： A second-order predistortion circuit for linearizing a nonlinear device having a transfer function of the form F=C.sub.1 I.sub.1 -C.sub.2 (I.sub.1).sup.2, where I.sub.1 is a current applied to an input of the nonlinear device, and C.sub.1 and C.sub.2 are constants. The nonlinear device is typically a laser diode. The predistortion circuit includes a field effect transistor biased for square law operation. An input voltage is applied between the gate and source electrodes of the field effect transistor. An amplifier is connected between the drain electrode of the field effect transistor and the input of the nonlinear device. The gain of the amplifier is selected to minimize second-order distortion in the output of the nonlinear device as a function of the input voltage to the field effect transistor.

5. 发明授权

US5023945A Transmission system using parallel optic links to achieve enhanced dynamic range 失效
标题翻译：传输系统采用并行光纤链路实现增强的动态范围
公开(公告)号：US5023945A
公开(公告)日：1991-06-11
申请号：US454679
申请日：1989-12-21
申请人： Richard B. Childs
发明人： Richard B. Childs
IPC分类号： H04B10/02 , H04B10/00 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/18 , H04B10/26 , H04B10/28 , H04B14/00
CPC分类号： H04B10/032
摘要： An optical transmission system includes a power splitter for dividing an RF input signal into a plurality of intermediate signals each assigned to a respective one of a plurality of parallel optic links. Each link optically transmits its respective intermediate RF signal over a respective fiber line before being detected at a receiver end. The detected signals are combined by an RF power combiner into an output signal having an enhanced signal to noise ratio that is better by 10 log n dB over that of a single link, where n is the number of parallel links. In order to permit operation at arbitrarily high frequencies, a pilot tone delay equalization circuit is coupled to each link at the receiver end for equalizing the delay variations between the various fiber paths.

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