公开(公告)号：US5477370A

公开(公告)日：1995-12-19

申请号：US293311

申请日：1994-08-22

申请人： Frank R. Little ,  Herman A. Kruse ,  John G. Megna ,  Rezin E. Pidgeon

发明人： Frank R. Little ,  Herman A. Kruse ,  John G. Megna ,  Rezin E. Pidgeon

IPC分类号： H03F3/08 ,  H03F3/26 ,  H03G3/20 ,  H03G3/30 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/158

CPC分类号： H03G3/3084 ,  H03F3/082 ,  H03F3/265 ,  H04B10/6931 ,  H04B10/6972 ,  H04B10/6973

摘要： A receiver is described for optical signals which are amplitude modulated with broadband radio frequency signals. The receiver includes an optical detector which receives the incoming optical signal and generates a radio frequency electrical signal which varies with the power level of the incoming optical signal. This electrical signal is applied to a pair of amplifiers which are connected in a push-pull relationship. A gain control circuit controls the gain of the amplifier pair.

摘要翻译： 描述了用宽带射频信号进行幅度调制的光信号的接收机。 接收机包括光检测器，其接收输入光信号并产生随输入光信号的功率电平而变化的射频电信号。 该电信号被施加到以推挽关系连接的一对放大器。 增益控制电路控制放大器对的增益。

公开(公告)号：US5404242A

公开(公告)日：1995-04-04

申请号：US37593

申请日：1993-03-26

申请人： Mouhammad J. Chawki ,  Loic Le Guiner ,  Daniel Dumay

发明人： Mouhammad J. Chawki ,  Loic Le Guiner ,  Daniel Dumay

IPC分类号： G01J3/26 ,  H01L31/10 ,  H01S5/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/158 ,  H04L27/14

CPC分类号： H04B10/67 ,  H01S5/0014 ,  H01S5/0028

摘要： A photoreceiver for frequency-modulated optical signals. The photoreceiver is formed of a semiconductor laser of the FABRY-PEROT type, wherein one of the faces thereof which receives a frequency modulated light beam is given an antireflection treatment. The voltage at the laser terminals is also tapped. Such a device finds particular application to optical telecommunication systems.

摘要翻译： 用于调频光信号的光接收器。 光接收器由FABRY-PEROT型的半导体激光器形成，其中接收调频光束的其中一个面被给予抗反射处理。 激光端子的电压也被点击。 这样的设备对光通信系统具有特定的应用。

公开(公告)号：US5371354A

公开(公告)日：1994-12-06

申请号：US146619

申请日：1993-11-02

申请人： Wataru Domon ,  Makoto Shibutani

发明人： Wataru Domon ,  Makoto Shibutani

IPC分类号： H04B10/158 ,  H04B10/06

CPC分类号： H04B10/6973 ,  H04B10/6911

摘要： The present invention provides a resonance-type optical receiver circuit which keeps predetermined small distortion even when the received light level becomes high. The resonance-type optical receiver circuit varies the resistance value of variable resistance element 80, which is used as a load resistor to optical detector 4, in response to the intensity of output signal 10 of an amplifier. The load resistor varies in response to a variations of the received light level of the optical detector in this manner to keep the input to the amplifier lower than a fixed value.

摘要翻译： 本发明提供一种谐振型光接收器电路，即使在接收的光电平变高时也保持预定的小失真。 谐振型光接收电路根据放大器的输出信号10的强度，将用作光检测器4的负载电阻的可变电阻元件80的电阻值变化。 负载电阻器以这种方式响应于光学检测器的接收光级的变化而变化，以保持放大器的输入低于固定值。

公开(公告)号：US5367156A

公开(公告)日：1994-11-22

申请号：US146739

申请日：1993-11-02

申请人： Wataru Domon ,  Makoto Shibutani

发明人： Wataru Domon ,  Makoto Shibutani

IPC分类号： H04B10/158 ,  H04B10/06

CPC分类号： H04B10/6973 ,  H04B10/6911

摘要： The present invention provides a resonance-type optical receiver circuit which keeps predetermined small distortion even when the received light level becomes high. The resonance-type optical receiver circuit varies the resistance value of variable resistance element 80, which is used as a load resistor to optical detector 4, in response to the intensity of output signal 10 of an amplifier. The load resistor varies in response to a variations of the received light level of the optical detector in this manner to keep the input to the amplifier lower than a fixed value.

摘要翻译： 本发明提供一种谐振型光接收器电路，即使在接收的光电平变高时也保持预定的小失真。 谐振型光接收电路根据放大器的输出信号10的强度，将用作光检测器4的负载电阻的可变电阻元件80的电阻值变化。 负载电阻器以这种方式响应于光学检测器的接收光级的变化而变化，以保持放大器的输入低于固定值。

公开(公告)号：US5329113A

公开(公告)日：1994-07-12

申请号：US75087

申请日：1993-06-10

申请人： Geoffrey W. Taylor ,  Timothy A. Vang

发明人： Geoffrey W. Taylor ,  Timothy A. Vang

IPC分类号： H01L27/144 ,  H01L27/16 ,  H01S5/026 ,  H04B10/00 ,  H04B10/158 ,  H01J40/14

CPC分类号： H01S5/0262 ,  H01L27/1443 ,  H01L27/16 ,  H04B10/69 ,  H04B10/801

摘要： An optoelectronic switching node is disclosed wherein two input optical beams can be switched in the sense that they can be regenerated in either one of two output spatial locations in response to input control signals. Each one of the input optical beams is coupled to a resonant cavity detector which generates a current when its corresponding optical beam impinges on its resonant cavity. Output optical beams are regenerated by two inversion channel lasers each one of which has emitter, source and sub-collector terminals and is bistable in the sense that it can be switched on and off by currents delivered into and taken out of its source terminal. Heterojunction field effect transistors are used to selectively couple the currents generated by the resonant cavity detectors to the source terminals of the lasers in order to turn them on. Two heterojunction field effect transistors are each connected as a two terminal impedance between the source terminal of each laser and a reference potential in order to turn the laser off when no current is being provided by a detector. Two additional heterojunction field effect transistors are also connected as two terminal load impedances for each of the lasers. All of the devices are fabricated on a single wafer using a single epitaxial growth.

摘要翻译： 公开了一种光电开关节点，其中两个输入光束可以在这样的意义上被切换，即它们可以响应于输入控制信号在两个输出空间位置中的任一个中再生。 每个输入光束耦合到谐振腔检测器，当其对应的光束照射在其谐振腔上时产生电流。 输出光束由两个反向通道激光器再生，每个反向通道激光器都具有发射极，源极和子集电极端子，并且在通过输入和从其源极端子中取出的电流可以被接通和断开的意义上是双稳态的。 异质结场效应晶体管用于选择性地将由谐振腔检测器产生的电流耦合到激光器的源极端子，以使它们接通。 两个异质结场效应晶体管各自连接在每个激光源的源极端子与参考电位之间的两端阻抗，以便在没有检测器提供电流时关闭激光器。 两个附加的异质结场效应晶体管也连接作为每个激光器的两个端子负载阻抗。 所有的器件都使用单个外延生长在单个晶片上制造。

公开(公告)号：US5251054A

公开(公告)日：1993-10-05

申请号：US782177

申请日：1991-10-24

申请人： Mark A. Lynn

发明人： Mark A. Lynn

IPC分类号： H03F3/08 ,  H04B10/158 ,  H04B10/06 ,  H04B10/20

CPC分类号： H03F3/08 ,  H04B10/6972

摘要： A receiver circuit for a LAN electro-optical interface includes a high pass filter connected between the optical signal receiving element and the standard ECL line receiver. The high pass filter removes noise from the signal output by the optical signal receiving element, thereby reducing the bit error rate of the system and/or increasing the effective sensitivity of the system, enabling the signal transmission distance to be increased.

摘要翻译： 用于LAN电光接口的接收器电路包括连接在光信号接收元件和标准EC​​L线接收器之间的高通滤波器。 高通滤波器从光信号接收元件输出的信号中去除噪声，从而降低了系统的误码率和/或增加了系统的有效灵敏度，从而能够提高信号传输距离。

公开(公告)号：US5202553A

公开(公告)日：1993-04-13

申请号：US856800

申请日：1992-03-24

申请人： William L. Geller

发明人： William L. Geller

IPC分类号： H03F3/08 ,  H03F3/68 ,  H03G3/20 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/158 ,  H04B10/26 ,  H04B10/28

CPC分类号： H04B10/6931 ,  H03F3/087 ,  H03G3/3084

摘要： A transimpedance front end is provided for an optical receiver which includes a photodetector coupled optically to an optical fiber for receiving optical signals over the fiber and connected electrically to the front end. The front end comprises a buffer amplifier connected to the photodetector, a first amplifier selectively connected to the buffer through a first switch and through a first, high value feedback resistor in order to define a first mode low optical signal level amplifier configuration, a second amplifier selectively connected to the buffer through a second switch and through a second, switched low value resistor to define a second mode high optical signal level amplifier configuration, and an optical level sensing and switching control circuit connected to the photodetector for sensing incoming optical signal level and for switching between the first and second amplifier configurations as a function thereof.

摘要翻译： 为光接收器提供跨阻抗前端，光接收器包括光学耦合到光纤的光电检测器，用于在光纤上接收光信号并且电连接到前端。 前端包括连接到光电检测器的缓冲放大器，通过第一开关选择性地连接到缓冲器并通过第一高值反馈电阻器来定义第一模式低光信号电平放大器配置的第一放大器，第二放大器 通过第二开关和通过第二开关低值电阻器选择性地连接到缓冲器以限定第二模式高光信号电平放大器配置，以及连接到光电检测器的光学电平感测和切换控制电路，用于感测输入光信号电平和 用于在第一和第二放大器配置之间切换其功能。

公开(公告)号：US5146079A

公开(公告)日：1992-09-08

申请号：US608085

申请日：1990-11-01

申请人： Richard J. Lisco

发明人： Richard J. Lisco

IPC分类号： G01S7/48 ,  H04B1/10 ,  H04B10/02 ,  H04B10/158 ,  H04B10/18

CPC分类号： H04B10/6911 ,  H04B10/69 ,  H04B10/6931 ,  H04B10/6933

摘要： A broadband optical receiver which exhibits low noise and distortion characteristics. An active bias feedback circuit stabilizes the quiescent operating currents of a low noise amplifier coupled to the receiver photodetector. A transformer matches the impedance of the amplifier to an attenuator.

公开(公告)号：US5091641A

公开(公告)日：1992-02-25

申请号：US619634

申请日：1990-11-27

申请人： Pieter W. G. Duijves

发明人： Pieter W. G. Duijves

IPC分类号： H01L31/10 ,  H01L31/02 ,  H03F3/08 ,  H04B10/158

CPC分类号： H04B10/6973 ,  H01L31/02019 ,  H03F3/08 ,  H04B10/6911

摘要： Optoelectric front-end comprising a photodiode which is not grounded and which drives a bipolar transistor acting as a feedback amplifier between the base and the emitter thereof, so that the d.c. arrangement of the transistor will cause no further noise to develop.

公开(公告)号：US4859015A

公开(公告)日：1989-08-22

申请号：US233334

申请日：1988-08-17

申请人： Jeffrey A. Krinsky ,  Robert A. Falk

发明人： Jeffrey A. Krinsky ,  Robert A. Falk

IPC分类号： G02B6/14 ,  H04B10/158

CPC分类号： G02B6/14 ,  H04B10/673

摘要： An optical receiver particularly suited for use in a noisy environment, the receiver includes an optical gain device for amplifying an input signal to produce an amplified input signal, a photodetector, and a mode selector. The optical gain device includes an optical gain medium, an optical input port through which the input signal may be received into the optical gain medium, and an optical output port through which an optical output signal may leave the optical gain medium. The output signal includes the amplified input signal, plus any noise generated within the optical gain device. The input and output ports include antireflection means. In a preferred embodiment, the mode selector comprises a single mode fiber-optic cable that transmits a single spatial mode of the output signal to the photodetector.

摘要翻译： 一种特别适用于嘈杂环境的光接收机，该接收机包括用于放大输入信号以产生放大的输入信号的光增益装置，光电检测器和模式选择器。 光增益装置包括光增益介质，可以将输入信号接收到光增益介质中的光输入端口以及光输出端口，光输出信号可以通过该输出端口离开光增益介质。 输出信号包括放大的输入信号，加上在光学增益器件内产生的任何噪声。 输入和输出端口包括防反射装置。 在优选实施例中，模式选择器包括将输出信号的单个空间模式传输到光电检测器的单模光纤电缆。