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1. 发明申请

WO2002067046A1 VARIABLE PULSE WIDTH OPTICAL PULSE GENERATION WITH SUPERPOSED MULTIPLE FREQUENCY DRIVE 审中-公开
标题翻译：具有超级多频驱动的可变脉冲宽度光学脉冲发生
公开(公告)号：WO2002067046A1
公开(公告)日：2002-08-29
申请号：PCT/US2002/004651
申请日：2002-02-19
申请人： AXE, INC. , LAGASSE, Michael, J. , VERGHESE, Simon , DUFFY, Sean
发明人： LAGASSE, Michael, J. , VERGHESE, Simon , DUFFY, Sean
IPC分类号： G02F1/295
CPC分类号： G02F1/225 , G02F1/0327 , G02F2201/16 , G02F2203/26
摘要： A variable pulse width optical pulse generation system includes a first and a second optical interferometric modulator (12, 14). A first drive signal (30) applied to the first modulator (12) modulates an input optical signal (16), so as to provide a first modulated optical signal (20). A second drive signal (32) applied to the second modulator (14) modulates the fist modulated optical signal (20), producing output optical pulses (22). One or both of the drive signals (30, 32) may be formed by superposing a plurality of waveforms having different frequencies, for example a base frequency and its odd harmonics. By adjusting the relative amplitudes of the drive signals (30, 32), or the relative amplitudes of the component waveforms forming the drive signals (30, 32), the pulse width and the extinction ratio of the output pulses (22) can be varied so as to achieve optimal values.
摘要翻译：可变脉冲宽度光脉冲发生系统包括第一和第二光学干涉式调制器（12,14）。施加到第一调制器（12）的第一驱动信号（30）调制输入光信号（16），以便提供第一调制光信号（20）。施加到第二调制器（14）的第二驱动信号（32）调制第一调制光信号（20），产生输出光脉冲（22）。驱动信号（30,32）中的一个或两个可以通过叠加具有不同频率的多个波形来形成，例如基频和其奇次谐波。通过调节驱动信号（30,32）的相对幅度或形成驱动信号（30,32）的分量波形的相对幅度，可以改变输出脉冲（22）的脉冲宽度和消光比以达到最佳值。

2. 发明申请

WO2003087925A1 TUNABLE PULSE WIDTH OPTICAL PULSE GENERATOR 审中-公开
标题翻译： TUNABLE脉冲宽度光学脉冲发生器
公开(公告)号：WO2003087925A1
公开(公告)日：2003-10-23
申请号：PCT/US2002/011144
申请日：2002-04-09
申请人： AXE, INC. , VERGHESE, Simon , LAGASSE, Michael, J.
发明人： VERGHESE, Simon , LAGASSE, Michael, J.
IPC分类号： G02F1/35
CPC分类号： G02F1/0327 , G02F1/0316 , G02F1/0356 , G02F2001/212 , G02F2203/26
摘要： A system for generating variable pulse width optical pulses includes an optical modulator, and means for generating an electrical modulation signal. The optical modulator (14) includes an optical input (13) for receiving an input optical signal (11), a modulation input for receiving the electrical modulation signal (15) that modulates the input optical signal, and an optical output (17) for providing output optical pulses resulting from the modulation of the input optical signal. The electrical modulation signal is formed by combining a base waveform with one or more odd harmonics of the base waveform. The pulse widths of the output optical pulses can be precisely controlled, by adjusting the relative amplitudes and phases of each of the constituent waveforms that form the modulation signal. The system can be used as part of a variable transmission window OTDM demultiplexer.
摘要翻译：用于产生可变脉宽光脉冲的系统包括光调制器和用于产生电调制信号的装置。光调制器（14）包括用于接收输入光信号（11）的光输入（13），用于接收调制输入光信号的电调制信号（15）的调制输入端和用于提供由输入光信号的调制产生的输出光脉冲。电调制信号通过将基本波形与基波形的一个或多个奇次谐波组合而形成。可以通过调整形成调制信号的每个构成波形的相对幅度和相位来精确地控制输出光脉冲的脉冲宽度。该系统可以用作可变传输窗口OTDM解复用器的一部分。

3. 发明申请

WO2003012535A1 OPTICAL PULSE GENERATOR WITH SINGLE FREQUENCY DRIVE 审中-公开
标题翻译：具有单频驱动的光学脉冲发生器
公开(公告)号：WO2003012535A1
公开(公告)日：2003-02-13
申请号：PCT/US2002/023621
申请日：2002-07-26
申请人： AXE, INC. , LAGASSE, Michael, J. , JACOB, John , RAO, Hemonth , HALL, Katherine, L.
发明人： LAGASSE, Michael, J. , JACOB, John , RAO, Hemonth , HALL, Katherine, L.
IPC分类号： G02F1/035
CPC分类号： G02F1/225 , G02F1/0121 , G02F2201/16 , G02F2203/54 , H04B10/505 , H04B10/5051 , H04B10/508
摘要： An optical pulse generation system includes a first (12) and a second (14) optical interferometric modulator, each characterized by an optical output power - modulation voltage transfer function. A first drive signal (30) is applied to the first modulator, so as to modulate an input optical signal and provide a first modulated optical signal. A second drive signal (32) is applied to the second modulator, so as to modulate the first modulated optical signal. The bias voltage and the drive amplitude for the first drive signal are substantially different, compared to the bias voltage and drive amplitude for the second drive signal. The bias voltages and drive amplitudes of the drive signals can be chosen so as to generate output pulses having a relatively narrow pulse width (∼16 ps), and a relatively high extinction ratio (∼25 dB). The first and second drive signals are characterized by a substantially identical frequency (∼10 GHz), permitting the system to use a relatively small number of commercially available parts.
摘要翻译：光脉冲发生系统包括第一（12）和第二（14）光干涉式调制器，每个调制器的特征在于光输出功率调制电压传递函数。第一驱动信号（30）被施加到第一调制器，以便调制输入光信号并提供第一调制光信号。第二驱动信号（32）被施加到第二调制器，以便调制第一调制光信号。与第二驱动信号的偏置电压和驱动振幅相比，第一驱动信号的偏置电压和驱动幅度基本上不同。可以选择驱动信号的偏置电压和驱动幅度，以便产生具有相对窄的脉冲宽度（16μS）和相对高的消光比（类似的25dB）的输出脉冲。第一和第二驱动信号的特征在于基本相同的频率（类似10GHz），允许系统使用相对少量的市售部件。

4. 发明申请

WO2003085423A2 RECONFIGURABLE TIME-SLOT ROUTER 审中-公开
标题翻译：可重新连接的时隙路由器
公开(公告)号：WO2003085423A2
公开(公告)日：2003-10-16
申请号：PCT/US2003/008958
申请日：2003-03-21
申请人： AXE, INC. , RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
发明人： RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
IPC分类号： G02B
CPC分类号： H04Q11/0005 , H04Q2011/0015 , H04Q2011/0024 , H04Q2011/0033 , H04Q2011/0039 , H04Q2011/0052
摘要： An optical signal router for communication systems is described. The optical signal router includes a switch driver that generates a modulation drive signal containing a linear combination of a DC offset voltage and at least three electrical signals. In one embodiment, each of the at least three electrical signals has a frequency that is a unique integral multiple of a bit-rate. The optical signal router also includes an optical switch having an electrical modulation input that is electrically coupled to the output of the switch driver. The optical switch also includes an optical input that receives a time-division multiplexed optical signal including a plurality of optical subchannels. In one embodiment, each of the plurality of optical subchannels includes the bit-rate. The optical switch routes a subset of the plurality of optical subchannels to an optical output in response to the modulation drive signal.
摘要翻译：描述了用于通信系统的光信号路由器。光信号路由器包括产生包含DC偏移电压和至少三个电信号的线性组合的调制驱动信号的开关驱动器。在一个实施例中，至少三个电信号中的每一个具有作为比特率的唯一整数倍的频率。光信号路由器还包括具有电耦合到开关驱动器的输出的电调制输入的光开关。光开关还包括光输入，其接收包括多个光子通道的时分复用光信号。在一个实施例中，多个光学子信道中的每一个包括比特率。响应于调制驱动信号，光开关将多个光子信道的子集路由到光输出。

5. 发明申请

WO2002096003A1 COMMUNICATION CHANNEL OPTIMIZATION USING FORWARD ERROR CORRECTION STATISTICS 审中-公开
标题翻译：使用前向纠错统计的通信信道优化
公开(公告)号：WO2002096003A1
公开(公告)日：2002-11-28
申请号：PCT/US2002/016034
申请日：2002-05-21
申请人： AXE, INC. , JACOB, John, M. , HALL, Katherine, L. , LAGASSE, Michael, J. , LADWING, Geoffrey, B. , KESLER, Morris, P.
发明人： JACOB, John, M. , HALL, Katherine, L. , LAGASSE, Michael, J. , LADWING, Geoffrey, B. , KESLER, Morris, P.
IPC分类号： H04J14/02
CPC分类号： H04L1/0021 , H04J14/02 , H04J14/0221 , H04L1/0001 , H04L1/203
摘要： An apparatus and method for dynamically optimizing performance in a communication channel are described. The communication channel can be part of a high-speed digital network such as the Internet and can be a dense wavelength-division multiplexed (DWDM) optical communication channel. The DWDM signal includes forward error correction (FEC) information which is added to the DWDM signal and is used within the DWDM optical layer to monitor transfer errors in the data. Error correction statistics generated as a result of analysis of the FEC information in the data in accordance with the invention are used in generating an adjustment to and/or optimizing performance of the system. The adjustment made can include adjusting power level in one or more of the subsignal transmitters.
摘要翻译：描述了用于在通信信道中动态优化性能的装置和方法。通信信道可以是诸如因特网的高速数字网络的一部分，并且可以是密集的波分复用（DWDM）光通信信道。 DWDM信号包括前向纠错（FEC）信息，其被添加到DWDM信号中并且在DWDM光层中使用以监视数据中的传输错误。作为根据本发明的数据中的FEC信息的分析产生的错误校正统计量被用于生成对系统的调整和/或优化系统的性能。进行的调整可以包括调整一个或多个子信号发射机中的功率电平。

6. 发明申请

WO2003085423A3 RECONFIGURABLE TIME-SLOT ROUTER 审中-公开
公开(公告)号：WO2003085423A3
公开(公告)日：2003-10-16
申请号：PCT/US2003/008958
申请日：2003-03-21
申请人： AXE, INC. , RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
发明人： RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
IPC分类号： H04J14/08
摘要： An optical signal router (100) for communications systems is described. The optical signal router includes a switch driver (104) that generates a modulation drive signal containing a linear combination of a DC offset voltage and at least three electrical signals. In one embodiment, each of the at least three electrical signals has a frequency that is a unique integral multiple of a bit-rate. The optical signal router also includes an optical switch (102) having an electrical modulation input (106) that is electrically coupled to the output (122) of the switch driver. The optical switch also includes an optical input (108) that receives a time-division multiplexed optical signal including a plurality of optical subchannels. In one embodiment, each of the plurality of optical subchannels includes the bitrate. The optical switch routes a subset of the plurality of optical subchannels to an optical output (110, 112) in response to the modulation drive signal.

7. 发明申请

WO2001097426A3 APPARATUS AND METHOD FOR DEMULTIPLEXING A TIME MULTIPLEXED SIGNAL 审中-公开
公开(公告)号：WO2001097426A3
公开(公告)日：2001-12-20
申请号：PCT/US2001/040968
申请日：2001-06-14
申请人： AXE, INC. , LAGASSE, Michael, J. , HALL, Katherine, L.
发明人： LAGASSE, Michael, J. , HALL, Katherine, L.
IPC分类号： H04J14/08
摘要： An apparatus and method for demultiplexing a time-multiplexed signal are described. The time-multiplexed signal is a combination of component signals, each of which is modulated at a unique modulation frequency. The demultiplexer of the system includes an input interface over which the signal is received. One or more modulators receive the multiplexed signal and demultiplex the signal in stages. A plurality of receivers are used to detect clock and data from the component signals. Each of the receivers is tuned to a respective one of the modulation frequencies of the component signals. One or more of the receivers provides one or more feedback signals to a bias input and/or an RF input of one or more of the modulators. The feedback signals are used to adjust the modulators such that the power at the receiver at the associated modulation signal is maximized, thus causing the modulators to route each of the demultiplexed component signals to the appropriate receiver.

8. 发明申请

WO2007094899A3 SYSTEMS AND METHODS FOR TRANSMITTING QUANTUM AND CLASSICAL SIGNALS OVER AN OPTICAL NETWORK 审中-公开
公开(公告)号：WO2007094899A3
公开(公告)日：2007-08-23
申请号：PCT/US2007/000383
申请日：2007-01-05
申请人： MAGIQ TECHNOLOGIES, INC. , BEAL, A., Craig , LAGASSE, Michael, J.
发明人： BEAL, A., Craig , LAGASSE, Michael, J.
IPC分类号： H04K1/00
摘要： Systems and methods for transmitting quantum and classical signals over an optical network are disclosed, wherein the quantum signal wavelength either falls within the classical signal wavelength band, or is very close to one of the classical signal wavelengths The system includes a deep-notch optical filter (30) with a blocking bandwidth that includes the quantum signal wavelength but not any of the classical signal wavelengths The deep-notch optical filtering is applied to the classical signals (CS) prior to their being multiplexed with the quantum signals to prevent noise generated by the classical signals from adversely affecting transmission of quantum signals in the transmission optical fiber (12) Narrow-band filtering is also applied to the quantum signals prior to their detection in order to substantially exclude spurious non-quantum-signal wavelengths that arise from non-linear effects in the transmission optical fiber.

9. 发明申请

WO2006074151A2 SECURE USE OF A SINGLE SINGLE-PHOTON DETECTOR IN A QKD SYSTEM 审中-公开
标题翻译：单个单光子检测器在QKD系统中的安全使用
公开(公告)号：WO2006074151A2
公开(公告)日：2006-07-13
申请号：PCT/US2006/000064
申请日：2006-01-03
申请人： MAGIQ TECHNOLOGIES, INC. , LAGASSE, Michael, J.
发明人： LAGASSE, Michael, J.
IPC分类号： H04L9/00
CPC分类号： H04L9/0858
摘要： A method of using a single single-photon detector (SPD) (232) in a quantum key distribution (QKD) system (101, 201) is described. The method includes modulating a phase of a quantum signal (PA, PB) a first time at a first QKD station (ALICE) by applying a first phase modulation randomly selected from a set of four possible phase modulations. The method also includes modulating the phase of the quantum signal a second time at a second QKD station (BOB). The second modulation involves applying a second phase modulation randomly selected from the same set of four possible phase modulations at the first QKD station. The method is a modification of the BB84 protocol and represents a higher level of quantum security than either the BB84 or B92 protocols when using a QKD system with a single SPD.
摘要翻译：描述了在量子密钥分配（Q，D）系统（101,201）中使用单个单光子检测器（SPD）（232）的方法。该方法包括通过应用从一组四个可能的相位调制中随机选择的第一相位调制，在第一QKD站（ALICE）上首次调制量子信号（PA，PB）的相位。该方法还包括在第二QKD站（BOB）处第二次调制量子信号的相位。第二调制包括在第一QKD站处应用从相同的四组可能相位调制中随机选择的第二相位调制。该方法是BB84协议的修改，并且表示当使用具有单个SPD的QKD系统时，比BB84或B92协议更高的量子安全级别。

10. 发明申请

WO2006004883A2 TEMPERATURE COMPENSATION FOR QKD SYSTEMS 审中-公开
标题翻译： QKD系统的温度补偿
公开(公告)号：WO2006004883A2
公开(公告)日：2006-01-12
申请号：PCT/US2005/023192
申请日：2005-06-28
申请人： MAGIQ TECHNOLOGIES, INC. , LAGASSE, Michael, J.
发明人： LAGASSE, Michael, J.
IPC分类号： H01J40/14 , H01J7/24
CPC分类号： H04L9/0858
摘要： Systems and methods for compensating a QKD system (200) for variations in temperature (T) are disclosed. One of the methods includes identifying an optimum detector gating signal timing (t) as a function of temperature for a single-photon detector (SPD) unit (216) in one of the QKD stations. The detector gating signal (S3) timing versus temperature information is stored in a look-up table in a memory unit (252). The QKD system's temperature is monitored during operation using a temperature sensor (TS). The timing of the detector gating signal is adjusted based on the operating temperature and the corresponding timing value adjustment (Δ) in the look-up table. The result is a compensated detector gating timing signal (S3') provided to the SPD that yields an optimum number of photon counts (N) even as the temperature of the QKD station (Bob) varies.
摘要翻译：公开了用于补偿温度（T）变化的QKD系统（200）的系统和方法。所述方法之一包括在QKD站之一中识别作为单个光子检测器（SPD）单元（216）的温度的函数的最佳检测器门控信号定时（t）。检测器门控信号（S3）定时对温度信息被存储在存储器单元（252）中的查找表中。使用温度传感器（TS）在操作过程中监控QKD系统的温度。检测器门控信号的定时根据查找表中的工作温度和相应的定时值调整（？）进行调整。结果是即使当QKD站（Bob）的温度变化时，提供给SPD的补偿检测器门控定时信号（S3'）也产生最佳数量的光子计数（N）。

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