公开(公告)号：US07706536B2

公开(公告)日：2010-04-27

申请号：US11210941

申请日：2005-08-24

Applicant: Mihaela Dinu ,  Christophe J. Dorrer ,  Clinton Randy Giles ,  Inuk Kang ,  Dan Mark Marom

Inventor： Mihaela Dinu ,  Christophe J. Dorrer ,  Clinton Randy Giles ,  Inuk Kang ,  Dan Mark Marom

IPC: H04K1/00

CPC classification number: H04L9/0858

Abstract: A communication system adapted to use wavelength (frequency) division multiplexing for quantum-key distribution (QKD) and having a transmitter coupled to a receiver via a transmission link. In one embodiment, the receiver is adapted to (i) phase-shift a local oscillator (LO) signal generated at the receiver, (ii) combine the LO signal with a quantum-information (QI) signal received via the transmission link from the transmitter to produce interference signals, (iii) measure an intensity difference for these interference signals, and (iv) phase-lock the LO signal to the QI signal based on the measurement result. In one configuration, the QI signal has a plurality of pilot frequency components, each carrying a training signal, and a plurality of QKD frequency components, each carrying quantum key data. Advantageously, the system can maintain a phase lock for the QKD frequency components of the QI and LO signals, while the QKD frequency components of the QI signal continuously carry quantum key data.

Abstract translation: 一种适于使用用于量子密钥分配（QKD）的波长（频率）分割复用并且具有通过传输链路耦合到接收机的发射机的通信系统。 在一个实施例中，接收机适于（i）移位在接收机处产生的本地振荡器（LO）信号，（ii）将LO信号与经由传输链路从该接收机接收的量子信息（QI）信号组合 发射机产生干扰信号，（iii）测量这些干扰信号的强度差，以及（iv）基于测量结果将LO信号锁相到QI信号。 在一个配置中，QI信号具有多个导频频率分量，每个导频频率分量携带训练信号，以及多个QKD频率分量，每个携带量子密钥数据。 有利的是，该系统可以维持QI和LO信号的QKD频率分量的相位锁定，而QI信号的QKD频率分量连续携带量子密钥数据。

公开(公告)号：US20090273821A1

公开(公告)日：2009-11-05

申请号：US12497959

申请日：2009-07-06

Applicant: Inuk KANG

Inventor： Inuk KANG

IPC: G02F3/00 ,  G06E3/00

CPC classification number: H04B10/5053 ,  G02F3/00 ,  H04B10/29

Abstract: An all-optical modulation format converter for converting optical data signals modulated in an on-off-keying (OOK) format to a phase-shift-keying (PSK) format. The OOK-to-PSK converter can be coupled to a delay-line interferometer to provide an all-optical wavelength converter for differential PSK (DPSK). The OOK-to-PSK converter can also be used in all-optical implementations of various functions, including, for example, exclusive-OR (XOR/NXOR) and OR logic, shift registers, and pseudo-random binary sequence (PRBS) generators.

Abstract translation: 一种全光调制格式转换器，用于将以开 - 关键（OOK）格式调制的光数据信号转换为相移键控（PSK）格式。 OOK到PSK转换器可以耦合到延迟线干涉仪，以提供用于差分PSK（DPSK）的全光波长转换器。 OOK-PSK转换器也可用于各种功能的全光学实现，包括例如异或（XOR / NXOR）和OR逻辑，移位寄存器和伪随机二进制序列（PRBS）生成器 。

公开(公告)号：US20080114556A1

公开(公告)日：2008-05-15

申请号：US11559015

申请日：2006-11-13

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: G01R23/16

CPC classification number: G01J11/00

Abstract: An optical pulse monitor (OPM) that determines an optical phase profile for a pulse train by (i) modulating the optical phase of pulses in the pulse train using a periodic waveform and (ii) generating a derivative of a spectrum of the resulting modulated signal with respect to the waveform's amplitude. In one embodiment, an OPM has a phase modulator that modulates the optical phase of pulses in a received pulse train using a periodic waveform supplied by a configurable drive circuit. The drive circuit temporally aligns the waveform with the pulse train to serially produce each of four selected temporal alignments. An optical signal analyzer measures a spectrum of the modulated signal generated by the modulator for each of these four temporal alignments and provides the four measured spectra to a processor. The processor uses the measured spectra to determine two spectrum derivatives with respect to the waveform's amplitude. The processor samples each of the spectrum derivatives at frequency points separated from one another by the frequency of the periodic waveform and uses these samples to obtain a series of complex values. The processor then calculates the optical phase profile for the pulse train based on the phase of a complex value obtained by summing the series.

Abstract translation: 一种光脉冲监视器（OPM），其通过以下步骤来确定脉冲串的光学相位曲线：（i）使用周期性波形调制脉冲串中的脉冲的光学相位，以及（ii）产生所产生的调制信号的频谱的导数 相对于波形的振幅。 在一个实施例中，OPM具有相位调制器，其使用由可配置驱动电路提供的周期性波形来调制接收的脉冲串中的脉冲的光相位。 驱动电路使波形与脉冲串暂时对准，以串行地产生四个选定的时间对准中的每一个。 光信号分析仪测量由这四个时间对准中的每一个调制器产生的调制信号的频谱，并将四个测量的光谱提供给处理器。 处理器使用测量的光谱来确定关于波形振幅的两个光谱导数。 处理器将频率衍生物中的每个频率点在周期波形的频率上彼此分离的频率点处采样，并使用这些样本来获得一系列复数值。 然后，处理器基于通过对该系列求和获得的复数值的相位来计算脉冲序列的光学相位曲线。

公开(公告)号：US20050185968A1

公开(公告)日：2005-08-25

申请号：US10815033

申请日：2004-03-31

Applicant: Christophe Dorrer ,  Alan Gnauck ,  Inuk Kang ,  Chongjin Xie

Inventor： Christophe Dorrer ,  Alan Gnauck ,  Inuk Kang ,  Chongjin Xie

IPC: G02F1/03 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/135 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04B10/18

CPC classification number: H04B10/5055 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/532 ,  H04B10/5561

Abstract: Methods and apparatus are provided for transmitting alternate-polarization phase-shift-keyed data. The output of a laser is modulated to optically encode electronic data using phase shift keying (PSK) to generate an optical signal. An alternate polarization PSK (APol-PSK) signal is generated by alternating the polarization of the optical signal using a modulator such that successive optical bits have substantially orthogonal polarizations.

Abstract translation: 提供了用于发送交替偏振相移键控数据的方法和装置。 调制激光器的输出以使用相移键控（PSK）对电子数据进行光学编码以产生光信号。 通过使用调制器交替光信号的偏振来产生交替偏振PSK（APol-PSK）信号，使得连续的光学位具有基本正交的偏振。

公开(公告)号：US20050168792A1

公开(公告)日：2005-08-04

申请号：US10766977

申请日：2004-01-29

Applicant: Christophe Dorrer ,  Inuk Kang

Inventor： Christophe Dorrer ,  Inuk Kang

IPC: G01J1/34 ,  G01J11/00 ,  G02F1/03 ,  G02F1/07

CPC classification number: G01J11/00

Abstract: An optical sampling method and apparatus are provided for modulating an optical signal using a first electroabsorption modulator (EAM) driven by a sinusoidal RF voltage signal to provide substantially jitter free temporal gating of the optical signal. The gated optical signal from the first EAM is routed through a second EAM to provide an optical output signal having a reduced repetition rate. The second EAM is driven using an electrical pulse train having a repetition rate that is a subharmonic of the frequency of the sinusoidal RF voltage signal driving the first EAM.

Abstract translation: 提供了一种光采样方法和装置，用于使用由正弦RF电压信号驱动的第一电吸收调制器（EAM）来调制光信号，以提供光信号的基本上无抖动的时间门控。 来自第一EAM的门控光信号通过第二EAM被路由以提供具有降低的重复率的光输出信号。 使用具有驱动第一EAM的正弦RF电压信号的频率的次谐波的重复频率的电脉冲串来驱动第二EAM。

公开(公告)号：US06885490B2

公开(公告)日：2005-04-26

申请号：US10427839

申请日：2003-05-01

Applicant: Christophe J. Dorrer ,  Inuk Kang

Inventor： Christophe J. Dorrer ,  Inuk Kang

IPC: G01J3/28 ,  G01J11/00 ,  H04B10/08 ,  H04B10/04 ,  G02F1/01

CPC classification number: G01J11/00

Abstract: A method and apparatus for characterizing an optical pulse using a reduced complexity chronocyclic tomography is described. In one example, an optical pulse train is modulated using quadratic temporal phase modulation. A first spectral intensity of the optical pulse train is measured after a quadratic temporal phase modulation having a first amplitude. A second spectral intensity of the train of optical pulses is then measured in response to the quadratic temporal phase modulation having a second amplitude. At least one of the group delay and the spectral intensity associated with the train of optical pulses is computed using the first spectral intensity and the second spectral intensity.

Abstract translation: 描述了使用复杂度较低的复杂断层扫描来表征光脉冲的方法和装置。 在一个示例中，使用二次时相调制来调制光脉冲串。 在具有第一幅度的二次时间相位调制之后测量光脉冲串的第一光谱强度。 然后响应于具有第二幅度的二次时间相位调制来测量光脉冲序列的第二光谱强度。 使用第一光谱强度和第二光谱强度计算与光脉冲序列相关联的组延迟和光谱强度中的至少一个。