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    • 3. 发明申请
    • Automatic gain control
    • 自动增益控制
    • US20070071455A1
    • 2007-03-29
    • US11492313
    • 2006-07-25
    • Near MargalitZvi Regev
    • Near MargalitZvi Regev
    • H04B10/06
    • H03G3/3084H04B10/691
    • A method and apparatus is presented for providing improved responsiveness of a receiver device. One embodiment includes a receiver device including an avalanche photodiode (APD), a transimpedance amplifier (TIA), and an automatic gain control (AGC) device configured to adjust the reverse bias voltage applied to the APD according to an approximate DC average of the incoming optical signal. A switch in the AGC device may be used to increase or decrease the time constant of an RC combination determining the DC averaging time period, thereby tailoring the response of the AGC device to characteristics of the incoming data pattern. The resulting receiver exhibits improved responsiveness and sensitivity by adapting to varying data patterns including those with data bursts interspersed with gaps.
    • 提出了一种用于提供接收机设备的改进响应性的方法和装置。 一个实施例包括一个包括雪崩光电二极管(APD),跨阻抗放大器(TIA)和自动增益控制(AGC)装置的接收器装置,其被配置为根据输入的近似DC平均值来调整施加到APD的反向偏置电压 光信号。 可以使用AGC装置中的开关来增加或减小确定DC平均时间段的RC组合的时间常数,从而定制AGC装置对输入数据模式的特性的响应。 所得到的接收机通过适应不同的数据模式(包括具有散布有间隙的数据脉冲串)的数据模式,显示出改进的响应性和灵敏度。
    • 4. 发明授权
    • Data signal threshold detection and/or recovery in optical and/or optoelectric receivers and/or transceivers
    • 光学和/或光电接收器和/或收发器中的数据信号阈值检测和/或恢复
    • US08948610B2
    • 2015-02-03
    • US13282191
    • 2011-10-26
    • Mohammad AzadehNear Margalit
    • Mohammad AzadehNear Margalit
    • H04B10/06H04L25/06H04L25/10H04B10/69
    • H04B10/695
    • Methods for receiving a signal and a detection circuit are disclosed. The detection circuit and related methods may be useful for the fast and accurate receiving of data signals. The detection circuit generally comprises a first circuit having a first time constant, a second circuit having (i) a common input with the first circuit and (ii) a second time constant, the second time constant being less than the first time constant, and a switch configured to (i) charge the first circuit with an input signal when the switch is in a first state, and (ii) charge or discharge the second circuit with the input signal when the switch is in a second state, the switch having the second state when the input signal is no longer received at the common input.
    • 公开了接收信号和检测电路的方法。 检测电路和相关方法对于快速和准确地接收数据信号可能是有用的。 检测电路通常包括具有第一时间常数的第一电路,第二电路具有(i)与第一电路的公共输入和(ii)第二时间常数,第二时间常数小于第一时间常数,以及 开关,被配置为:当开关处于第一状态时,(i)用输入信号对第一电路充电;以及(ii)当开关处于第二状态时,利用输入信号对第二电路进行充电或放电,开关具有 当在公共输入处不再接收输入信号时的第二状态。
    • 6. 发明授权
    • Optical transceiver with isolated modulator contacts and/or inputs
    • 具有隔离调制器触点和/或输入的光收发器
    • US09054813B2
    • 2015-06-09
    • US13824340
    • 2013-03-13
    • Near MargalitMark HeimbuchSheng Zhong Zhang
    • Near MargalitMark HeimbuchSheng Zhong Zhang
    • H04B10/00H04B10/50H01S5/00H04B10/516H04J14/00
    • H04B10/506H01S5/00H01S5/0085H01S5/4012H01S5/4087H04B10/40H04B10/516H04J14/00
    • A multi-channel optical transmitter generally includes a first light source configured to emit light of a first wavelength, a second light source configured to emit light of a second wavelength, a first modulator configured to modulate the light of the first wavelength, and a second modulator configured to modulate the light of the second wavelength. The first modulator has a first anode and a first cathode, and the second modulator has a second anode and a second cathode electrically isolated from the first anode and the first cathode. The modulators (and optionally the light sources) are on a common substrate. A method of transmitting optical signals generally includes modulating light emitted from a first light source using a first modulator, and modulating light emitted from a second light source using a second modulator, where the first modulator receives a first modulation signal, and the second modulator receives a second modulation signal electrically isolated from the first modulation signal.
    • 多通道光发射器通常包括被配置为发射第一波长的光的第一光源,被配置为发射第二波长的光的第二光源,被配置为调制第一波长的光的第一调制器,以及第二光源 调制器被配置为调制第二波长的光。 第一调制器具有第一阳极和第一阴极,并且第二调制器具有与第一阳极和第一阴极电隔离的第二阳极和第二阴极。 调制器(以及可选的光源)在公共衬底上。 传输光信号的方法通常包括使用第一调制器调制从第一光源发出的光,以及使用第二调制器调制从第二光源发射的光,其中第一调制器接收第一调制信号,并且第二调制器接收 与第一调制信号电隔离的第二调制信号。
    • 7. 发明授权
    • Variable bandgap modulator for a modulated laser system
    • 用于调制激光系统的可变带隙调制器
    • US08964804B2
    • 2015-02-24
    • US13820102
    • 2013-02-19
    • Mark HeimbuchNear Margalit
    • Mark HeimbuchNear Margalit
    • H01S3/10H01S5/343H01S5/062H01S5/0625H01S5/347H01S5/068
    • H01S5/343G02F1/025G02F2001/0155H01S5/0265H01S5/0612H01S5/06213H01S5/06251H01S5/068H01S5/1014H01S5/106H01S5/34306H01S5/347
    • A modulated laser system generally includes a light emission region, a modulation region having a plurality of semiconductive layers, at least one of which includes a quantum well layer having a variable energy bandgap, and an isolation region separating the light emission region and the modulation region. The laser may be an electro-absorption modulated laser, the light emission region may include a distributed feedback laser, and the modulation region may include an electro-absorption modulator. The laser may be manufactured by forming a lower semiconductive buffer layer on a substrate, an active layer including one or more quantum well layers having the variable energy bandgap on or above the lower semiconductive buffer layer, an upper semiconductive buffer layer on or above the active layer, a contact layer on or above the upper semiconductive buffer layer, and an isolation region separating the light emission region and the modulation region.
    • 调制激光系统通常包括发光区域,具有多个半导体层的调制区域,其中至少一个包括具有可变能带隙的量子阱层,以及分离发光区域和调制区域的隔离区域 。 激光器可以是电吸收调制激光器,发光区域可以包括分布式反馈激光器,并且调制区域可以包括电吸收调制器。 可以通过在衬底上形成下半导体缓冲层来制造激光器,活性层包括在下半导体缓冲层上或上方具有可变能带隙的一个或多个量子阱层,活性层上或上方的上半导电缓冲层 层,上半导体缓冲层上或上方的接触层,以及分离发光区域和调制区域的隔离区域。
    • 8. 发明申请
    • Optical Transceiver with Isolated Modulator Contacts and/or Inputs
    • 带有隔离调制器触点和/或输入的光收发器
    • US20150030339A1
    • 2015-01-29
    • US13824340
    • 2013-03-13
    • Near MargalitMark HeimbuchSheng Zhong Zhang
    • Near MargalitMark HeimbuchSheng Zhong Zhang
    • H04B10/50H04B10/516
    • H04B10/506H01S5/00H01S5/0085H01S5/4012H01S5/4087H04B10/40H04B10/516H04J14/00
    • A multi-channel optical transmitter generally includes a first light source configured to emit light of a first wavelength, a second light source configured to emit light of a second wavelength, a first modulator configured to modulate the light of the first wavelength, and a second modulator configured to modulate the light of the second wavelength. The first modulator has a first anode and a first cathode, and the second modulator has a second anode and a second cathode electrically isolated from the first anode and the first cathode. The modulators (and optionally the light sources) are on a common substrate. A method of transmitting optical signals generally includes modulating light emitted from a first light source using a first modulator, and modulating light emitted from a second light source using a second modulator, where the first modulator receives a first modulation signal, and the second modulator receives a second modulation signal electrically isolated from the first modulation signal.
    • 多通道光发射机通常包括被配置为发射第一波长的光的第一光源,被配置为发射第二波长的光的第二光源,被配置为调制第一波长的光的第一调制器,以及第二光源 调制器被配置为调制第二波长的光。 第一调制器具有第一阳极和第一阴极,并且第二调制器具有与第一阳极和第一阴极电隔离的第二阳极和第二阴极。 调制器(以及可选的光源)在公共衬底上。 传输光信号的方法通常包括使用第一调制器调制从第一光源发出的光,以及使用第二调制器调制从第二光源发射的光,其中第一调制器接收第一调制信号,并且第二调制器接收 与第一调制信号电隔离的第二调制信号。
    • 10. 发明授权
    • Circuits, architectures, apparatuses, methods and algorithms for determining a DC bias in an AC or AC-coupled signal
    • 用于确定AC或AC耦合信号中的DC偏置的电路,结构,装置,方法和算法
    • US09201103B2
    • 2015-12-01
    • US13206285
    • 2011-08-09
    • Chris LaBountyTodd RopeTomas J. CiplickasNear Margalit
    • Chris LaBountyTodd RopeTomas J. CiplickasNear Margalit
    • H02P1/54H02M7/5387G01R19/25
    • G01R19/2506
    • Methods, circuits, architectures, apparatuses, and algorithms for determining a DC level in an AC or AC-coupled signal. The method generally includes disabling the AC or AC-coupled signal; sampling the disabled AC or AC-coupled signal to obtain sampled DC values of the AC or AC-coupled signal; and calculating the DC level using the sampled DC values of the AC or AC-coupled signal. The present transmitter generally includes an electro-absorption modulated laser (EML); a photodetector; a signal source configured to provide an AC or AC-coupled signal to the EML; and a microcontroller or microprocessor configured to (i) control the signal source, (ii) receive information from the photodetector, and (iii) deactivate the signal source for a predetermined length of time. The circuits, architectures, and apparatuses generally include those that embody one or more of the inventive concepts disclosed herein.
    • 用于确定AC或AC耦合信号中的直流电平的方法,电路,结构,装置和算法。 该方法通常包括禁用AC或AC耦合信号; 对禁用的AC或AC耦合信号进行采样以获得AC或AC耦合信号的采样DC值; 以及使用AC或AC耦合信号的采样DC值来计算DC电平。 本发明人通常包括电吸收调制激光(EML); 光检测器; 信号源,被配置为向所述EML提供AC或AC耦合信号; 以及被配置为(i)控制信号源的微控制器或微处理器,(ii)从光电检测器接收信息,以及(iii)将信号源去激活预定的时间长度。 电路,架构和装置通常包括体现本文公开的一个或多个发明构思的那些。