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公开(公告)号：US20170180057A1
公开(公告)日：2017-06-22
申请号：US15365992
申请日：2016-12-01
Applicant: Oclaro Japan, Inc.
Inventor： Riu HIRAI
CPC classification number: H04B10/6933 , H04B10/2504 , H04B10/2513 , H04B10/6931 , H04B10/695 , H04B10/697
Abstract: Provided is an optical receiver module which includes a conversion unit which converts an input optical signal to an electrical signal, an amplification unit which amplifies the electrical signal and outputs an amplified signal, a reception unit which directly or indirectly receives the amplified signal, and an offsetting unit which offsets the electrical signal such that a difference between a center of an intensity width of the electrical signal and a center of an intensity range of a signal capable of being received by the reception unit becomes small.
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公开(公告)号：US20170170982A1
公开(公告)日：2017-06-15
申请号：US14966244
申请日：2015-12-11
Applicant: Futurewei Technologies, Inc.
Inventor： Syed Habib Rahman , Fan Wang , Xiaoshu Si , Tao Ouyang , Chuan Niu
CPC classification number: H04L12/2885 , H04B1/1036 , H04B10/2575 , H04B10/60 , H04B10/616 , H04B10/697 , H04L25/0228 , H04L25/03019
Abstract: An apparatus, comprising a receiver configured to receive a primary signal that comprises a narrowband noise component and a broadband noise component, a processor coupled to the receiver and configured to determine, in a time domain, an estimate of the narrowband noise component in real-time, determine a cancelled output signal in real-time that comprises an estimate of the broadband noise component, and determine an estimate of a power level of the narrowband noise component in real-time.
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公开(公告)号：US09625662B2
公开(公告)日：2017-04-18
申请号：US14856095
申请日：2015-09-16
Applicant: Tom Luk , Christopher Falt
Inventor： Tom Luk , Christopher Falt
CPC classification number: G02B6/4225 , G01J1/44 , G01R19/10 , G02B6/4227 , H03F3/08 , H04B10/6911 , H04B10/697
Abstract: A method for monitoring a circuit. The method may include obtaining, using a total current monitoring device, a measurement of a current transmitted through a cathode in a photodetector circuit. The current may include a first photocurrent for a first photodetector and a second photocurrent for a second photodetector. The method may include obtaining, using a differential current monitoring device in a transimpedance amplifier circuit, a differential voltage proportional to a current difference between the first photocurrent and the second photocurrent. The transimpedance amplifier circuit may generate, using the first photocurrent and the second photocurrent, a first output signal and a second output signal. The method may include determining, using the differential voltage and the measurement of the current transmitted through the cathode, an amount of the first photocurrent and an amount of the second photocurrent.
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24.发明申请METHOD AND SYSTEM HAVING A TRANSIMPEDANCE AMPLIFIER CIRCUIT WITH A DIFFERENTIAL CURRENT MONITORING DEVICE FOR MONITORING OPTICAL RECEIVER CIRCUIT (As amended) 有权具有用于监测光接收器电路的差分电流监测装置的转移放大器电路的方法和系统（经修改）
公开(公告)号：US20170075081A1
公开(公告)日：2017-03-16
申请号：US14856095
申请日：2015-09-16
Applicant: Tom Luk , Christopher Falt
Inventor： Tom Luk , Christopher Falt
CPC classification number: G02B6/4225 , G01J1/44 , G01R19/10 , G02B6/4227 , H03F3/08 , H04B10/6911 , H04B10/697
Abstract: A method for monitoring a circuit. The method may include obtaining, using a total current monitoring device, a measurement of a current transmitted through a cathode in a photodetector circuit. The current may include a first photocurrent for a first photodetector and a second photocurrent for a second photodetector. The method may include obtaining, using a differential current monitoring device in a transimpedance amplifier circuit, a differential voltage proportional to a current difference between the first photocurrent and the second photocurrent. The transimpedance amplifier circuit may generate, using the first photocurrent and the second photocurrent, a first output signal and a second output signal. The method may include determining, using the differential voltage and the measurement of the current transmitted through the cathode, an amount of the first photocurrent and an amount of the second photocurrent.
Abstract translation: 一种用于监视电路的方法。 该方法可以包括使用总电流监测装置获得通过光电检测器电路中的阴极传输的电流的测量。 电流可以包括用于第一光电检测器的第一光电流和用于第二光电检测器的第二光电流。 该方法可以包括：使用跨阻抗放大器电路中的差分电流监视装置获得与第一光电流和第二光电流之间的电流差成比例的差分电压。 跨阻放大器电路可以使用第一光电流和第二光电流产生第一输出信号和第二输出信号。 该方法可以包括使用差分电压和通过阴极传输的电流的测量来确定第一光电流的量和第二光电流的量。
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公开(公告)号：US09584074B2
公开(公告)日：2017-02-28
申请号：US12371356
申请日：2009-02-13
Applicant: Joseph F. Chiappetta , Marcel F. Schemmann
Inventor： Joseph F. Chiappetta , Marcel F. Schemmann
CPC classification number: H03F3/082 , H03F2200/534 , H03F2200/537 , H03F2200/541 , H04B10/697
Abstract: An optical receiver includes closed-loop composite second order (CSO) distortion correction logic. An optical communication system includes a transmitter comprising open-loop composite second order (CSO) distortion correction logic, and a receiver comprising closed-loop composite second order (CSO) distortion correction logic.
Abstract translation: 光接收机包括闭环复合二阶（CSO）失真校正逻辑。 光通信系统包括包括开环复合二阶（CSO）失真校正逻辑的发射机和包括闭环复合二阶（CSO）失真校正逻辑的接收机。
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公开(公告)号：US20160204902A1
公开(公告)日：2016-07-14
申请号：US15078189
申请日：2016-03-23
Applicant: Shahab OVEIS GHARAN , Kim B. ROBERTS , Mahmoud TAHERZADEHBOROUJENI
Inventor： Shahab OVEIS GHARAN , Kim B. ROBERTS , Mahmoud TAHERZADEHBOROUJENI
CPC classification number: H04B10/695 , H04B10/612 , H04B10/613 , H04B10/614 , H04B10/616 , H04B10/697 , H04L1/0054
Abstract: In a coherent receiver of an optical communication system, a method of processing a detected symbol estimate to determine a most likely value of a corresponding transmitted data word, the transmitted data word comprising one or more data bits encoded in a transmitter using a predetermined constellation of at least two symbols. A set of two or more virtual constellation points are define in a decision region corresponding to a possible value of the data word. The detected symbol estimate is processed to find a most likely virtual constellation point given the detected symbol estimate. The most likely value of the corresponding transmitted data word is determined based on the most likely virtual constellation point.
Abstract translation: 在光通信系统的相干接收机中，处理检测到的符号估计以确定对应的发送数据字的最可能值的方法，所发送的数据字包括使用预定的星座图的发送机中编码的一个或多个数据比特 至少两个符号。 在与数据字的可能值相对应的判定区域中定义一组两个或更多个虚拟星座点。 处理检测到的符号估计以找到给定检测到的符号估计的最可能的虚拟星座点。 基于最可能的虚拟星座点来确定对应的传输数据字的最可能的值。
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公开(公告)号：US20160056900A1
公开(公告)日：2016-02-25
申请号：US14780791
申请日：2014-02-04
Applicant: NEC CORPORATION , FUJITSU LIMITED
Inventor： Daisuke OKAMOTO , Junichi FUJIKATA , Tatsuya USUKI
IPC: H04B10/69 , H04B10/079 , H04L25/08
CPC classification number: H04B10/697 , H03F3/08 , H04B10/0795 , H04B10/693 , H04L25/085
Abstract: An optical receiver circuit has a function of converting a differential optical signal into a differential current signal. The optical receiver circuit has a pair of light-receiving elements including first and second light-receiving elements operable to convert an optical signal into a current signal and a pair of signal lines. An anode of the first light-receiving element and a cathode of the second light-receiving element are connected to a first signal line of the pair of signal lines via first and second AC coupling capacitors, respectively. A cathode of the first light-receiving element and an anode of the second light-receiving element are connected to a second signal line of the pair of signal lines via third and fourth AC coupling capacitors, respectively. Differential signal currents are generated in the first and second signal lines in response to reception of differential optical signals inputted into the first and second light-receiving elements.
Abstract translation: 光接收器电路具有将差分光信号转换为差分电流信号的功能。 光接收器电路具有一对光接收元件，其包括第一和第二光接收元件，其可操作以将光信号转换为电流信号和一对信号线。 第一光接收元件的阳极和第二光接收元件的阴极分别经由第一和第二AC耦合电容器连接到该对信号线的第一信号线。 第一光接收元件的阴极和第二光接收元件的阳极分别经由第三和第四AC耦合电容器连接到该对信号线的第二信号线。 响应于输入到第一和第二光接收元件的差分光信号的接收，在第一和第二信号线中产生差分信号电流。
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公开(公告)号：US20150162992A1
公开(公告)日：2015-06-11
申请号：US14552159
申请日：2014-11-24
Applicant: SILICON LINE GMBH
Inventor： Martin GROEPL , Holger FRITSCHE , Holger HOELTKE
IPC: H04B10/69
CPC classification number: H04B10/697 , H04B10/6911
Abstract: In order to be able to receive any digital optical signals in the bandwidth range from zero bits per second to the high Gbits/second range with as little circuit complexity as possible and to be able to process said signals with the least possible energy requirement for reprocessing, the invention proposes a circuit arrangement as well as a method for receiving digital optical signals by means of at least one light-receiving component connected upstream of at least one signal input port, particularly by means of at least one photodiode, wherein the unipolar current signal coming from the light-receiving component through the signal input port is transformed into a bipolar current signal by means of a compensation current provided by at least one current source, the value of said current being defined by means of at least one digital register.
Abstract translation: 为了能够在尽可能少的电路复杂度的情况下接收从零比特/秒到高千兆位/秒范围的带宽范围内的任何数字光信号，并且能够以尽可能少的能量需求处理所述信号以进行再处理 本发明提出一种电路装置以及一种通过至少一个连接在至少一个信号输入端口上游的光接收部件，特别是借助于至少一个光电二极管来接收数字光信号的方法，其中单极性电流 通过信号输入端口从光接收部件来的信号通过由至少一个电流源提供的补偿电流而变换为双极电流信号，所述电流的值由至少一个数字寄存器限定。
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公开(公告)号：US20150125155A1
公开(公告)日：2015-05-07
申请号：US14519197
申请日：2014-10-21
Applicant: Hypres Inc.
Inventor： Deepnarayan Gupta , Oleg Mukhanov
IPC: H04L27/20 , H04B10/69 , H04B10/2575
CPC classification number: H04B10/25752 , H04B10/2575 , H04B10/40 , H04B10/5561 , H04B10/697 , H04L27/2096
Abstract: A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.
Abstract translation: 一种用于无线基站的收发机架构，其中宽带射频信号通过光纤或数字或模拟格式的光纤或其他非失真媒介在至少一个塔式安装单元和基于地面的单元之间承载。 每个塔式装置（用于接收和传输）都具有天线，模拟放大器和电光转换器。 地面单元具有超快数据转换器和数字频率转换器以及信号线性化器，以补偿放大器和光学链路在两个方向上的非线性失真。 在本发明的一个实施例中，至少一个数字数据转换器，频率转换器和线性化器包括安装在低温冷却器上的超导元件。
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公开(公告)号：US20150071651A1
公开(公告)日：2015-03-12
申请号：US14174142
申请日：2014-02-06
Inventor： Georgios Asmanis , Faouzi Chaahoub , Michael Allen Robinson , David W. Dolfi
IPC: H04B10/25 , H04B10/61 , H04B10/2507 , H04B10/564
CPC classification number: H04B10/524 , H04B10/54 , H04B10/58 , H04B10/697
Abstract: An optical communication system, a transmitter, a receiver, and methods of operating the same are provided. In particular, a transmitter is disclosed as being configured to encode optical signals in accordance with a multi-level coding scheme. The receiver is configured to provide receive and decode to the optical signals received from the transmitter. One or both of the receiver and transmitter are configured to compensate for non-idealities or non-linearities introduced into the communication system by optical components of the system.
Abstract translation: 提供光通信系统，发射机，接收机及其操作方法。 特别地，发射机被公开为被配置为根据多电平编码方案对光信号进行编码。 接收机被配置为向从发射机接收的光信号提供接收和解码。 接收机和发射机中的一个或两个被配置为通过系统的光学部件补偿引入通信系统的非理想性或非线性度。
