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1.发明授权Light-receipt system with current bias circuit and pre-amplifier for use in optical digital communication 失效具有电流偏置电路和前置放大器的光接收系统用于光学数字通信
公开(公告)号：US5625181A
公开(公告)日：1997-04-29
申请号：US288582
申请日：1994-08-10
申请人： Akihiko Yasuda , Setsuo Misaizu , Hisaya Sakamoto , Yuji Miyaki , Norio Nagase , Hiroshi Kuzukami
发明人： Akihiko Yasuda , Setsuo Misaizu , Hisaya Sakamoto , Yuji Miyaki , Norio Nagase , Hiroshi Kuzukami
IPC分类号： H01L31/10 , H03G3/10 , H03G3/20 , H03G3/30 , H04B10/079 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/67 , H04B10/69 , H04B10/06
CPC分类号： H04B10/6911 , H03G3/3084
摘要： A light receipt system has a bias circuit and a light-receipt element. The bias circuit controls light input power to the light-receipt element to the optimum multiplication factor. The bias circuit of the light-receipt element has a first resistor, a second resistor, and a third resistor. The first resistor and the second resistor are connected in parallel, and the light-receipt element is connected between a connection of the first resistor and the second resistor, and the third resistor. A bypass current path is provided, connected to a junction point between the first resistor and the second resistor.
摘要翻译： 光接收系统具有偏置电路和光接收元件。 偏置电路将光接收元件的光输入功率控制到最佳乘法因子。 光接收元件的偏置电路具有第一电阻器，第二电阻器和第三电阻器。 第一电阻器和第二电阻器并联连接，光接收元件连接在第一电阻器和第二电阻器的连接点与第三电阻器之间。 提供旁路电流路径，连接到第一电阻器和第二电阻器之间的连接点。
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公开(公告)号：US5732096A
公开(公告)日：1998-03-24
申请号：US655813
申请日：1996-05-31
IPC分类号： H01S5/068 , H01S5/0683 , H01S3/00
CPC分类号： H01S5/06832
摘要： The control circuit for supplying a driving current to a laser diode makes it possible to keep the laser driving current variable in a wide range. The control circuit includes a laser diode, a photo diode for receiving a part of an optical output emitted from the laser diode and outputting an electrical signal corresponding to a level of the optical output, a first current supplying circuit for supplying a bias current to the laser diode, a first monitor circuit for monitoring a size of a signal driving current supplied by the first current supplying circuit, a second monitor circuit for monitoring a size of the bias current supplied by the second current supplying circuit, a first feed-back loop for controlling the signal driving current supplied from the first current supplying circuit by the output of the first monitor circuit, as a reference of the electric signal outputted from the photo diode corresponding to the level of the optical output emitted from the laser diode, a second feed-back loop for controlling the bias current supplied from the second current supplying circuit by the output of the second monitor circuit, as said reference of the signal outputted from the photo diode corresponding to the level of the optical output emitted form the laser diode; and an adder circuit for adding an offset current of the signal driving current supplied from the first current supplying circuit on the outside of the first feed-back loop.
摘要翻译： 用于向激光二极管提供驱动电流的控制电路使得可以将激光驱动电流保持在宽范围内。 所述控制电路包括激光二极管，用于接收从所述激光二极管发射的光输出的一部分并输出与所述光输出的电平对应的电信号的光电二极管;第一电流供应电路， 激光二极管，用于监测由第一电流供应电路提供的信号驱动电流的大小的第一监视器电路，用于监视由第二电流供应电路提供的偏置电流的大小的第二监视电路，第一反馈回路 用于通过第一监视电路的输出来控制从第一电流供应电路提供的信号驱动电流作为从与激光二极管发射的光输出的电平相对应的从光电二极管输出的电信号的参考，第二 反馈回路，用于通过第二监视电路的输出来控制从第二电流供应电路提供的偏置电流 所述参考从光电二极管输出的信号对应于从激光二极管发射的光输出的电平; 以及加法电路，用于将从第一电流供应电路提供的信号驱动电流的偏移电流加到第一反馈回路的外部。
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公开(公告)号：US07769304B2
公开(公告)日：2010-08-03
申请号：US11645712
申请日：2006-12-27
IPC分类号： H04B10/06
CPC分类号： H04B10/66
摘要： A signal processing apparatus sets a discrimination level most suitably, regardless of whether the apparatus is in the minimum receiving system or the maximum receiving system. The apparatus comprises a light receiving unit converting input signal light to an electric signal, and a level detecting unit for detecting a high level component and a low level component of the electric signal from the light receiving unit, along with peak levels on a high-side and a low-side of the electric signal.
摘要翻译： 信号处理装置最适合地设定判别水平，而不管装置是在最小接收系统还是最大接收系统中。 该装置包括将输入信号光转换为电信号的光接收单元，以及用于检测来自光接收单元的电信号的高电平分量和低电平分量的电平检测单元， 侧和低端的电信号。
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公开(公告)号：US20070146795A1
公开(公告)日：2007-06-28
申请号：US11645712
申请日：2006-12-27
IPC分类号： G06K15/00
CPC分类号： H04B10/66
摘要： A signal processing apparatus sets a discrimination level most suitably, regardless of whether the apparatus is in the minimum receiving system or the maximum receiving system. The apparatus comprises a light receiving unit converting input signal light to an electric signal, and a level detecting unit for detecting a high level component and a low level component of the electric signal from the light receiving unit, along with peak levels on a high-side and a low-side of the electric signal.
摘要翻译： 信号处理装置最适合地设定判别水平，而不管装置是在最小接收系统还是最大接收系统中。 该装置包括将输入信号光转换为电信号的光接收单元，以及用于检测来自光接收单元的电信号的高电平分量和低电平分量的电平检测单元， 侧和低端的电信号。
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公开(公告)号：US20110052207A1
公开(公告)日：2011-03-03
申请号：US12805690
申请日：2010-08-13
IPC分类号： H04B10/04
CPC分类号： H01S5/0687 , H01S5/141 , H04B10/572
摘要： An optical transmission device in which: a first cyclic filter with a fixed transmission wavelength characteristic and a second cyclic filter with a variable transmission wavelength characteristic are combined, and the transmission wavelength characteristic of the second cyclic filter is changed according to a target wavelength, to thereby control the relative phase relationship of the transmission wavelength characteristics of the first and second cyclic filters. Moreover a light source is controlled according to a monitored value of the transmittance of the second cyclic filter with respect to the control target light, to thereby match the wavelength of the control target light with the target wavelength. Consequently, it is possible, with a simple configuration using a combination of two cyclic filters, to variably control wavelength at arbitrary wavelength intervals at a high level of precision.
摘要翻译： 一种光传输装置，其特征在于：组合具有固定透射波长特性的第一循环滤波器和具有可变透射波长特性的第二循环滤波器，并且根据目标波长将第二循环滤波器的透射波长特性改变为 从而控制第一和第二循环滤波器的透射波长特性的相对相位关系。 此外，根据第二循环滤波器相对于控制目标光的透射率的监测值来控制光源，从而将控制目标光的波长与目标波长相匹配。 因此，通过使用两个循环滤波器的组合的简单配置，可以以高精度可变地控制任意波长间隔的波长。
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公开(公告)号：US08364045B2
公开(公告)日：2013-01-29
申请号：US12805690
申请日：2010-08-13
CPC分类号： H01S5/0687 , H01S5/141 , H04B10/572
摘要： An optical transmission device in which: a first cyclic filter with a fixed transmission wavelength characteristic and a second cyclic filter with a variable transmission wavelength characteristic are combined, and the transmission wavelength characteristic of the second cyclic filter is changed according to a target wavelength, to thereby control the relative phase relationship of the transmission wavelength characteristics of the first and second cyclic filters. Moreover a light source is controlled according to a monitored value of the transmittance of the second cyclic filter with respect to the control target light, to thereby match the wavelength of the control target light with the target wavelength. Consequently, it is possible, with a simple configuration using a combination of two cyclic filters, to variably control wavelength at arbitrary wavelength intervals at a high level of precision.
摘要翻译： 一种光传输装置，其特征在于：组合具有固定透射波长特性的第一循环滤波器和具有可变透射波长特性的第二循环滤波器，并且根据目标波长将第二循环滤波器的透射波长特性改变为 从而控制第一和第二循环滤波器的透射波长特性的相对相位关系。 此外，根据第二循环滤波器相对于控制目标光的透射率的监测值来控制光源，从而将控制目标光的波长与目标波长相匹配。 因此，通过使用两个循环滤波器的组合的简单配置，可以以高精度可变地控制任意波长间隔的波长。
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公开(公告)号：US20100246621A1
公开(公告)日：2010-09-30
申请号：US12704575
申请日：2010-02-12
申请人： Hiroshi Kuzukami
发明人： Hiroshi Kuzukami
IPC分类号： H01S3/10
CPC分类号： H01S5/0687 , H01S5/024 , H01S5/02415 , H01S5/06804 , H01S5/06825 , H01S5/12
摘要： A light source control apparatus includes a laser having a wavelength that varies depending on temperature; a wavelength monitor that monitors the wavelength of light output from the laser; a temperature controller that controls the temperature of the laser based on an output of the wavelength monitor; a temperature monitor that monitors the temperature of the laser; and a control manager that stops control by the temperature controller if a variation amount per unit time of the temperature monitored by the temperature monitor exceeds a threshold value.
摘要翻译： 光源控制装置包括具有随温度变化的波长的激光器; 监测从激光输出的光的波长的波长监视器; 温度控制器，其基于所述波长监视器的输出来控制所述激光器的温度; 监测激光器温度的温度监视器; 以及如果由温度监视器监视的温度的每单位时间的变化量超过阈值，则控制管理器停止温度控制器的控制。
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公开(公告)号：US20090324256A1
公开(公告)日：2009-12-31
申请号：US12379686
申请日：2009-02-26
IPC分类号： H04B10/12
CPC分类号： H04B10/505 , H04B10/564
摘要： In an optical transmitter, a laser emits light. A laser driving controller controls driving of the laser by superimposing modulation signals on laser driving signals to generate laser driving superimposed signals and by applying the laser driving superimposed signals to the laser to cause wavelength fluctuations in laser output light to suppress nonlinear optical phenomena during optical fiber transmission. An optical power variable controller variably controls a power of the laser output light. An optical fluctuation compensator suppresses optical fluctuations by monitoring output light from the variable controller to detect optical fluctuations accompanying wavelength fluctuations from monitoring results and by controlling a gain of the variable controller.
摘要翻译： 在光发射机中，激光发光。 激光驱动控制器通过在激光驱动信号上叠加调制信号来控制激光的驱动，以产生激光驱动叠加信号，并通过将激光驱动叠加信号施加到激光器来引起激光输出光中的波长波动，以抑制光纤内的非线性光学现象 传输。 光功率可变控制器可变地控制激光输出光的功率。 光波动补偿器通过监视来自可变控制器的输出光来抑制光波动，以从监测结果检测伴随波长波动的光波动，并通过控制可变控制器的增益。
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