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公开(公告)号：US07706536B2
公开(公告)日：2010-04-27
申请号：US11210941
申请日：2005-08-24
IPC分类号： H04K1/00
CPC分类号： H04L9/0858
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20060263096A1
公开(公告)日：2006-11-23
申请号：US11210973
申请日：2005-08-24
申请人： Mihaela Dinu , Christophe Dorrer , Clinton Giles , Inuk Kang , Dan Marom
发明人： Mihaela Dinu , Christophe Dorrer , Clinton Giles , Inuk Kang , Dan Marom
IPC分类号： H04B10/04
CPC分类号： H04L9/0858 , H04J14/0221 , H04J14/0227 , H04J14/0241 , H04J14/0282
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20060262930A1
公开(公告)日：2006-11-23
申请号：US11210941
申请日：2005-08-24
申请人： Mihaela Dinu , Christophe Dorrer , Clinton Giles , Inuk Kang , Dan Marom
发明人： Mihaela Dinu , Christophe Dorrer , Clinton Giles , Inuk Kang , Dan Marom
IPC分类号： H04K1/00
CPC分类号： H04L9/0858
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090185086A1
公开(公告)日：2009-07-23
申请号：US12357835
申请日：2009-01-22
申请人： Gang Chen , Mihaela Dinu , Roland Ryf
发明人： Gang Chen , Mihaela Dinu , Roland Ryf
IPC分类号： G02F1/1335 , G03B21/14
CPC分类号： G02F1/1313 , G02B27/283 , H04N9/315 , H04N9/3161 , H04N9/3173 , H04N9/3197
摘要： A spatial light modulator 100 comprising an array-type liquid crystal panel 115, a polarization beam splitter 120, an oblique wave plate 130 and a converging lens 135. The polarization beam splitter is orientated to direct a source light 125 towards a reflective planar surface 127 of the array-type liquid crystal panel. The oblique wave plate and converging lens are located between the polarization beam splitter and the array-type liquid crystal panel. The converging lens is configured to direct light from the reflective planar surface onto a facing surface 125 of the polarization beam splitter.
摘要翻译： 包括阵列型液晶面板115，偏振分束器120，倾斜波片130和会聚透镜135的空间光调制器100.偏振分束器被定向以将源光125引向反射平面表面127 的阵列型液晶面板。 倾斜波片和会聚透镜位于偏振分束器和阵列型液晶面板之间。 会聚透镜被配置为将来自反射平面的光引导到偏振分束器的相对表面125上。
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公开(公告)号：US06751377B2
公开(公告)日：2004-06-15
申请号：US09861840
申请日：2001-05-21
IPC分类号： G02B642
CPC分类号： G02B6/12007 , G02B6/3502 , G02B6/3536 , G02B6/357 , G02B6/3596 , G02F1/0118 , G02F2201/063 , G02F2201/16 , G02F2203/15 , G02F2203/585
摘要： In accordance with the invention, a tunable, reconfigurable optical add-drop filter comprises a pair of optical waveguides optically coupled by a microring or microdisk resonator wherein the coupling distance between the resonator and at least one of the waveguides is micromechanically controllable. With this arrangement, the degree of coupling can be tuned after fabrication to provide high level extinction of dropped wavelengths and the filter can be dynamically reconfigured. Advantageously, laser radiation is provided to tune the resonant wavelength.
摘要翻译： 根据本发明，可调谐可重构的光分插滤波器包括由微环谐振器或微盘谐振器光学耦合的一对光波导，其中谐振器与至少一个波导之间的耦合距离是微机械可控的。 通过这种布置，可以在制造之后调整耦合度，以提供掉落波长的高电平消光，并且可以动态地重新配置滤波器。 有利地，提供激光辐射以调谐谐振波长。
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公开(公告)号：US07460785B2
公开(公告)日：2008-12-02
申请号：US10109623
申请日：2002-03-28
申请人： Mihaela Dinu , Hernando Garcia , Daniel Kilper , Wayne H. Knox , Howard R. Stuart , Chunhui Xu
发明人： Mihaela Dinu , Hernando Garcia , Daniel Kilper , Wayne H. Knox , Howard R. Stuart , Chunhui Xu
IPC分类号： H04B17/00
CPC分类号： H04B10/0795 , H04B10/27 , H04J14/02
摘要： An optical performance monitor (OPM), e.g., for use in an optical network. The OPM may be configured to characterize one or more impairments in an optical signal modulated with data. The OPM has an optical autocorrelator configured to sample the autocorrelation function of the optical signal, e.g., using two-photon absorption. Autocorrelation points at various bit delays independently or in combination with average optical power may be used to detect and/or quantify one or more of the following: loss of data modulation, signal contrast, pulse broadening, peak power fluctuations, timing jitter, and deviations from the pseudo-random character of data. In addition, the OPM may be configured to perform Fourier transformation based on the autocorrelation points to obtain corresponding spectral components. The spectral components may be used to detect and/or quantify one or more of chromatic dispersion, polarization mode dispersion, and misalignment of a pulse carver and data modulator. The OPM may be further configured to generate feedback, e.g., to network operators to improve network performance.
摘要翻译： 光学性能监视器（OPM），例如用于光网络。 OPM可以被配置为表征用数据调制的光信号中的一个或多个损伤。 OPM具有配置成对光信号的自相关函数进行采样的光自相关器，例如使用双光子吸收。 独立地或与平均光功率组合的各种位延迟的自相关点可用于检测和/或量化以下中的一个或多个：数据调制丢失，信号对比度，脉冲展宽，峰值功率波动，定时抖动和偏差 从数据的伪随机字符。 此外，OPM可以被配置为基于自相关点执行傅里叶变换，以获得相应的光谱分量。 频谱分量可用于检测和/或量化脉冲编码器和数据调制器的色散，偏振模色散和未对准中的一个或多个。 OPM可以被进一步配置为产生反馈，例如，向网络运营商产生改善网络性能的反馈。
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公开(公告)号：US06795617B2
公开(公告)日：2004-09-21
申请号：US10426900
申请日：2003-04-30
申请人： Mihaela Dinu , Charles Kerbage , Xiang Liu , Francesco Quochi , Robert S. Windeler , Chunhui Xu
发明人： Mihaela Dinu , Charles Kerbage , Xiang Liu , Francesco Quochi , Robert S. Windeler , Chunhui Xu
IPC分类号： G02B626
CPC分类号： G02B6/266 , G02B6/02366 , G02B6/02376 , G02B6/0239
摘要： An optical device including a microstructured fiber pumped by an external pulsed-light source. In one embodiment, the microstructured fiber includes two waist regions functioning as a tunable attenuator and a wavelength shifter, respectively. Output wavelength of the optical device is selected by attenuating the pump light in the first waist region and then passing the light through the second waist region to shift the pump energy to a new spectral band. An optical device of the invention configured with two or more microstructured fibers generates two or more synchronized pulsed beams, each at a different characteristic wavelength. Certain embodiments of the invention provide an inexpensive, compact, energy-efficient multi-wavelength synchronized pulsed-light source.
摘要翻译： 包括由外部脉冲光源泵浦的微结构纤维的光学装置。 在一个实施例中，微结构纤维包括分别用作可调谐衰减器和波长移位器的两个腰部区域。 通过衰减第一腰围区域中的泵浦光，然后使光通过第二腰区，将泵浦能量转移到新的光谱带，来选择光学装置的输出波长。 配置有两个或多个微结构纤维的本发明的光学器件产生两个或更多个同步的脉冲束，每个具有不同的特征波长。 本发明的某些实施例提供了一种廉价，紧凑，节能的多波长同步脉冲光源。
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公开(公告)号：US07283744B2
公开(公告)日：2007-10-16
申请号：US10838059
申请日：2004-05-03
申请人： Mihaela Dinu , Daniel C. Kilper , Howard R. Stuart
发明人： Mihaela Dinu , Daniel C. Kilper , Howard R. Stuart
CPC分类号： H04B10/0795
摘要： An optical performance monitor (OPM) adapted to (i) sample an autocorrelation function corresponding to an optical signal transmitted in an optical network and (ii) based on the sampling, characterize two or more impairments concurrently present in the optical signal. In one embodiment, the OPM has an optical autocorrelator (OAC) coupled to a signal processor (SP). The OAC receives the optical signal from the network, generates two or more samples of its autocorrelation function, and applies said samples to the SP. The SP processes the samples and generates two or more signal metrics. Based on the signal metrics and reference data corresponding to the impairments, the SP then obtains a measure of each of the impairments.
摘要翻译： 一种光学性能监视器（OPM），其适于（i）对与光网络中发送的光信号相对应的自相关函数进行采样，以及（ii）基于该采样，表征同时存在于光信号中的两个或更多个损伤。 在一个实施例中，OPM具有耦合到信号处理器（SP）的光学自相关器（OAC）。 OAC从网络接收光信号，生成两个或多个自相关函数样本，并将所述样本应用于SP。 SP处理样本并生成两个或更多个信号度量。 基于对应于损伤的信号量度和参考数据，SP然后获得每个损伤的量度。
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公开(公告)号：US06970619B2
公开(公告)日：2005-11-29
申请号：US10403872
申请日：2003-03-31
CPC分类号： G02B6/12007 , G02B6/3502 , G02B6/3536 , G02B6/357 , G02B6/3596
摘要： An optical device has at least one waveguide with at least one adjacent resonator, where the distance between the resonator and the waveguide can be controllably adjusted to change the optical coupling between the resonator and the waveguide. When implemented as part of an interferometer, the ability to adjust the waveguide/resonator distance—and thereby the optical coupling between them—provides a mechanically tunable interferometer.
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公开(公告)号：US08390749B2
公开(公告)日：2013-03-05
申请号：US12357835
申请日：2009-01-22
申请人： Gang Chen , Mihaela Dinu , Roland Ryf
发明人： Gang Chen , Mihaela Dinu , Roland Ryf
IPC分类号： G02F1/135
CPC分类号： G02F1/1313 , G02B27/283 , H04N9/315 , H04N9/3161 , H04N9/3173 , H04N9/3197
摘要： A spatial light modulator 100 comprising an array-type liquid crystal panel 115, a polarization beam splitter 120, an oblique wave plate 130 and a converging lens 135. The polarization beam splitter is orientated to direct a source light 125 towards a reflective planar surface 127 of the array-type liquid crystal panel. The oblique wave plate and converging lens are located between the polarization beam splitter and the array-type liquid crystal panel. The converging lens is configured to direct light from the reflective planar surface onto a facing surface 125 of the polarization beam splitter.
摘要翻译： 包括阵列型液晶面板115，偏振分束器120，倾斜波片130和会聚透镜135的空间光调制器100.偏振分束器被定向以将源光125引向反射平面表面127 的阵列型液晶面板。 倾斜波片和会聚透镜位于偏振分束器和阵列型液晶面板之间。 会聚透镜被配置为将来自反射平面的光引导到偏振分束器的相对表面125上。
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