公开(公告)号：US08019231B2

公开(公告)日：2011-09-13

申请号：US11874510

申请日：2007-10-18

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: H04B10/00

CPC classification number: H04Q11/0005 ,  G06E3/001 ,  H04Q11/0066 ,  H04Q2011/0041

Abstract: In exemplary embodiments, all-optical pattern recognition for an optical input signal is achieved by wavelength-converting the input signal and then passively correlating the wavelength-converted signal based on a specified data pattern. By performing wavelength conversion using a CW laser signal having wavelength stability greater than that of the input signal, errors resulting from wavelength sensitivity of the passive correlator can be reduced. By performing both wavelength conversion and OOK-to-BPSK format conversion prior to the passive correlation, limitations in the number of available OOK patterns can be avoided. By performing the passive correlation in a bi-directional manner, feedback signal can be generated to control the operations of the passive correlator and/or the laser signal source(s).

Abstract translation: 在示例性实施例中，用于光输入信号的全光模式识别通过对输入信号进行波长转换，然后基于指定数据模式被动地关联波长转换信号来实现。 通过使用具有比输入信号的波长稳定性更大的波长稳定度的CW激光信号进行波长转换，可以减少由无源相关器的波长灵敏度引起的误差。 通过在被动相关之前执行波长转换和OOK至BPSK格式转换，可以避免可用OOK图案数量的限制。 通过以双向方式执行被动相关，可以产生反馈信号以控制无源相关器和/或激光信号源的操作。

公开(公告)号：US07558486B2

公开(公告)日：2009-07-07

申请号：US11162938

申请日：2005-09-28

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: H04B10/17 ,  H04B10/02

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) 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）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：US20090226183A1

公开(公告)日：2009-09-10

申请号：US11874510

申请日：2007-10-18

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: H04B10/00

CPC classification number: H04Q11/0005 ,  G06E3/001 ,  H04Q11/0066 ,  H04Q2011/0041

Abstract: In exemplary embodiments, all-optical pattern recognition for an optical input signal is achieved by wavelength-converting the input signal and then passively correlating the wavelength-converted signal based on a specified data pattern. By performing wavelength conversion using a CW laser signal having wavelength stability greater than that of the input signal, errors resulting from wavelength sensitivity of the passive correlator can be reduced. By performing both wavelength conversion and OOK-to-BPSK format conversion prior to the passive correlation, limitations in the number of available OOK patterns can be avoided. By performing the passive correlation in a bi-directional manner, feedback signal can be generated to control the operations of the passive correlator and/or the laser signal source(s).

Abstract translation: 在示例性实施例中，用于光输入信号的全光模式识别通过对输入信号进行波长转换，然后基于指定数据模式被动地关联波长转换信号来实现。 通过使用具有比输入信号的波长稳定性更大的波长稳定度的CW激光信号进行波长转换，可以减少由无源相关器的波长灵敏度引起的误差。 通过在被动相关之前执行波长转换和OOK至BPSK格式转换，可以避免可用OOK图案数量的限制。 通过以双向方式执行被动相关，可以产生反馈信号以控制无源相关器和/或激光信号源的操作。

公开(公告)号：US07583894B2

公开(公告)日：2009-09-01

申请号：US11534029

申请日：2006-09-21

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: H04K3/00 ,  G02F1/035 ,  G02F1/295 ,  G02B1/10

CPC classification number: G02F1/025 ,  G02F1/2255 ,  G02F2001/0155 ,  G02F2001/212

Abstract: Methods and apparatus are described for modulating an optical signal using electroabsorption in conjunction with an optical interferometer. Phase-shift keying modulation can be achieved with lower amplitude modulator drive signals than conventional methods by splitting the signal to be modulated into multiple optical modes and interferometrically combining the modes after modulating at least one of the modes with an EAM. Using the present invention, the extinction ratio performance of ASK can be significantly improved for a given drive voltage or a desired extinction ratio can be achieved with a substantially lower drive voltage. Hence, the elecro-optic bandwidth of EAMs can be enhanced by overcoming the trade-off relationship between extinction ratio and bandwidth. Furthermore, the present invention can be used to generate other modulation formats, such as QPSK or QAM, with much lower drive voltages, thereby reducing the cost and power consumption of the high-speed drive electronics for the modulation.

Abstract translation: 描述了使用电吸收结合光学干涉仪来调制光学信号的方法和装置。 通过将调制信号分割成多个光模式，并且通过EAM对至少一个模式进行调制后的干涉计量组合，可以通过比常规方法更低幅度的调制器驱动信号来实现相移键控调制。 使用本发明，对于给定的驱动电压，ASK的消光比性能可以显着提高，或者可以用较低的驱动电压实现所需的消光比。 因此，通过克服消光比和带宽之间的权衡关系，可以提高EAM的电光带宽。 此外，本发明可以用于产生具有低得​​多的驱动电压的其他调制格式，例如QPSK或QAM，从而降低用于调制的高速驱动电子设备的成本和功耗。

公开(公告)号：US20080074722A1

公开(公告)日：2008-03-27

申请号：US11534029

申请日：2006-09-21

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: G02F1/01

CPC classification number: G02F1/025 ,  G02F1/2255 ,  G02F2001/0155 ,  G02F2001/212

Abstract: Methods and apparatus are described for modulating an optical signal using electroabsorption in conjunction with an optical interferometer. Phase-shift keying modulation can be achieved with lower amplitude modulator drive signals than conventional methods by splitting the signal to be modulated into multiple optical modes and interferometrically combining the modes after modulating at least one of the modes with an EAM. Using the present invention, the extinction ratio performance of ASK can be significantly improved for a given drive voltage or a desired extinction ratio can be achieved with a substantially lower drive voltage. Hence, the elecro-optic bandwidth of EAMs can be enhanced by overcoming the trade-off relationship between extinction ratio and bandwidth. Furthermore, the present invention can be used to generate other modulation formats, such as QPSK or QAM, with much lower drive voltages, thereby reducing the cost and power consumption of the high-speed drive electronics for the modulation.

Abstract translation: 描述了使用电吸收结合光学干涉仪来调制光学信号的方法和装置。 通过将调制信号分割成多个光模式，并且通过EAM对至少一个模式进行调制后的干涉计量组合，可以通过比常规方法更低幅度的调制器驱动信号来实现相移键控调制。 使用本发明，对于给定的驱动电压，ASK的消光比性能可以显着提高，或者可以用较低的驱动电压实现所需的消光比。 因此，通过克服消光比和带宽之间的权衡关系，可以提高EAM的电光带宽。 此外，本发明可以用于产生具有低得​​多的驱动电压的其他调制格式，例如QPSK或QAM，从而降低用于调制的高速驱动电子设备的成本和功耗。

公开(公告)号：US20060262930A1

公开(公告)日：2006-11-23

申请号：US11210941

申请日：2005-08-24

Applicant: Mihaela Dinu ,  Christophe Dorrer ,  Clinton Giles ,  Inuk Kang ,  Dan Marom

Inventor： Mihaela Dinu ,  Christophe Dorrer ,  Clinton Giles ,  Inuk Kang ,  Dan 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：US07068411B2

公开(公告)日：2006-06-27

申请号：US10766977

申请日：2004-01-29

Applicant: Christophe J Dorrer ,  Inuk Kang

Inventor： Christophe J Dorrer ,  Inuk Kang

IPC: G02F1/03 ,  H04B10/04

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：US07844186B2

公开(公告)日：2010-11-30

申请号：US10815033

申请日：2004-03-31

Applicant: Christophe J. Dorrer ,  Alan H. Gnauck ,  Inuk Kang ,  Chongjin Xie

Inventor： Christophe J. Dorrer ,  Alan H. Gnauck ,  Inuk Kang ,  Chongjin Xie

IPC: H04B10/04

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：US20070071449A1

公开(公告)日：2007-03-29

申请号：US11162938

申请日：2005-09-28

Applicant: Inuk Kang

Inventor： Inuk Kang

IPC: H04B10/00

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) 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）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：US20060263096A1

公开(公告)日：2006-11-23

申请号：US11210973

申请日：2005-08-24

Applicant: Mihaela Dinu ,  Christophe Dorrer ,  Clinton Giles ,  Inuk Kang ,  Dan Marom

Inventor： Mihaela Dinu ,  Christophe Dorrer ,  Clinton Giles ,  Inuk Kang ,  Dan Marom

IPC: H04B10/04

CPC classification number: H04L9/0858 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0282

Abstract: A communication system adapted to use wavelength (frequency) division multiplexing for quantum-key distribution (QKD). In one embodiment, a communication system of the invention has a transmitter coupled to a receiver via a transmission link. The transmitter has (i) a first optical-frequency comb source (OFCS) adapted to generate a first plurality of uniformly spaced frequency components and (ii) a first multi-channel optical modulator adapted to independently modulate each component of the first plurality to produce a quantum-information (QI) signal applied to the transmission link. The receiver has (i) a second OFCS adapted to generate a second plurality of uniformly spaced frequency components and (ii) a second multi-channel optical modulator adapted to independently modulate each component of the second plurality to produce a local-oscillator (LO) signal. Each of the first and second optical-frequency comb sources is referenced to a frequency standard such that the frequency components generated by these comb sources have substantially the same frequencies. The receiver employs a multi-channel homodyne detector adapted to process interference signals produced by combining the LO signal with the QI signal to ascertain quantum information carried by the QI signal.

Abstract translation: 适用于量子密钥分配（QKD）的波长（频率）分割复用的通信系统。 在一个实施例中，本发明的通信系统具有经由传输链路耦合到接收机的发射机。 所述发射机具有（i）适于产生第一多个均匀间隔的频率分量的第一光频梳源（OFCS）和（ii）适于独立地调制所述第一多个的每个分量的第一多通道光调制器，以产生 施加到传输链路的量子信息（QI）信号。 接收器具有（i）适于产生第二多个均匀间隔的频率分量的第二OFCS;以及（ii）适于独立地调制第二多个单元的每个分量以产生本地振荡器（LO）的第二多通道光调制器， 信号。 第一和第二光频梳源中的每一个以频率标准为基准，使得由这些梳状源产生的频率分量具有基本上相同的频率。 接收机采用多通道零差检测器，适用于处理由LO信号与QI信号组合产生的干扰信号，以确定由QI信号承载的量子信息。