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公开(公告)号：US20170272165A1
公开(公告)日：2017-09-21
申请号：US15198503
申请日：2016-06-30
IPC分类号： H04B10/2581 , H04B10/50 , H04B10/60
CPC分类号： H04B10/2581 , H04B10/50 , H04B10/60 , H04B10/85
摘要： Transmitter, receiver, system and method for secure data communications are provided. The transmitter receives an optical signal from a signal source and transmits first and second version of the optical signal in first and second areas of an optical channel. The receiver receives first and second components of an obfuscated signal and modifies the first component before combining the modified first component and the second component to obtain a recovered optical signal.
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公开(公告)号：US20190238224A1
公开(公告)日：2019-08-01
申请号：US15883540
申请日：2018-01-30
IPC分类号： H04B10/079 , H04J14/02 , H04B10/071 , H04B10/80 , H04B10/299
摘要： A monitoring and calibration apparatus for an optical networking device such as ROADM is provided. Reflectors are integrated into the device, for example at the ends of optical interconnect cables. The reflectors reflect light in specific monitoring wavelengths and pass other wavelengths such as those used for communication. A light source emits monitoring light which is reflected by the reflector and measured by a detector to measure the integrity of optical paths. The optical paths can include optical cables and cable connectors. Path integrity between different modules of the device can therefore be monitored. Multiple reflectors, reflecting light in different wavelengths, can be placed in series along the same optical path and used to monitor multiple segments of the path. A wavelength selective switch (WSS) of the device can be used to route monitoring light to different optical paths. The WSS also operates to route communication signals in the device.
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公开(公告)号：US20180007045A1
公开(公告)日：2018-01-04
申请号：US15198441
申请日：2016-06-30
IPC分类号： H04L29/06 , H04B10/516 , H04B10/66 , H04B10/27
CPC分类号： H04L63/0876 , H04B10/27 , H04B10/516 , H04B10/66 , H04L63/0428 , H04L63/061 , H04L63/068
摘要： Transmitter, receiver, system and method for secure data communications are provided. The transmitter encodes data as a spatial symbol in accordance with a codebook to transmit spatially encoded data through the optical channel. The receiver detects a spatial symbol from spatially encoded data received through the optical channel, and generates a data value based on a codebook and the spatial symbol.
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公开(公告)号：US20180062782A1
公开(公告)日：2018-03-01
申请号：US15249784
申请日：2016-08-29
CPC分类号： H04J14/0201 , H04B10/2504 , H04B10/2507 , H04J14/0221
摘要： Aspects of the disclosure provide systems and methods which avoid the negative effects of Spectral Hole Burning when spectral changes are made for an optical communication system (OCS). Embodiments of the disclosure are directed to methods and systems which preform spectral holes for the range of wavelength channels expected to be used in the OCS. Embodiments include a configurable idle tone source for providing power to each of a set of idle tone wavelengths distributed across the spectral band used in the optical communication system. The configurable idle tone source is communicatively coupled to an output fiber of an optical network element and controlled such that optical power is present in the output optical fiber at each one of the set of idle tone wavelengths.
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公开(公告)号：US20180198547A1
公开(公告)日：2018-07-12
申请号：US15402914
申请日：2017-01-10
IPC分类号： H04J3/16 , H04B10/25 , H04B10/61 , H04B10/516
CPC分类号： H04B10/616 , H04B10/0779 , H04B10/25 , H04B10/40 , H04B10/516 , H04B2210/075
摘要： A method for conveying information through an optical fiber link between a transmitter and a receiver of an optical communication system. The method includes generating, by the transmitter, a predetermined spectral change, and inserting the predetermined spectral change into an optical fiber link for transmission to the receiver. A detector associated with the receiver detects the predetermined spectral change in an optical signal received through the optical fiber link, and generates a detection signal in accordance with the detection result. The detector is independent of a digital signal processor of the receiver that is configured to recover data modulated on the optical signal received through the optical fiber link.
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公开(公告)号：US20170310395A1
公开(公告)日：2017-10-26
申请号：US15430070
申请日：2017-02-10
IPC分类号： H04B10/27 , H04B10/079
CPC分类号： H04B10/27 , H04B10/07953 , H04J14/0257 , H04J14/0267 , H04J14/0271
摘要： A method for assigning a network path after receiving a connection request to connect a first node with a second node of a network. The method including evaluating a network utilization parameter of the network, such as a network load or blocking probability, at that point in time. If the network utilization parameter is below a minimum threshold level, the method includes carrying out the steps of identifying a set of n network paths through the network that connect the first node with the second node and are absent non-linear links, performing network path selection by selecting p network paths from the set of n network paths that have the best linear OSNR, and, selecting a network path from the set of p network paths that balances the wavelength utilization between the first node and the second node of a network.
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公开(公告)号：US20180062783A1
公开(公告)日：2018-03-01
申请号：US15248890
申请日：2016-08-26
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04B10/272 , H04J14/021 , H04J14/0257
摘要： A network controller in a control plane and a method for selecting a connection for a wavelength channel from a plurality of connection candidates in a communications network. The network controller comprises a modeling module and a routing engine. The modeling module obtains information from a physical element in the network, related to an estimated time for the element to establish each connection candidate therethrough for the wavelength channel. The routing engine selects the connection taking into account the estimated time associated with each connection candidate.
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公开(公告)号：US20190319735A1
公开(公告)日：2019-10-17
申请号：US16383310
申请日：2019-04-12
申请人： Hamid MEHRVAR , Christopher JANZ
发明人： Hamid MEHRVAR , Christopher JANZ
摘要： A method of managing an optical communications network comprising a plurality of nodes interconnected by optical sections. The method comprises: identifying one or more pairs of adjacent DL-equipped nodes at which dummy light (DL) hardware is deployed, respective dummy light (DL) hardware being deployed at fewer than the plurality of the nodes of the optical communications network, the respective DL hardware deployed at a particular node configured to supply dummy light to each optical section extending from the particular node, and defining a respective single-section DL path between each identified pair of adjacent DL-equipped nodes; identifying one or more pairs of non-adjacent DL-equipped nodes at which DL hardware is deployed, and defining a respective multi-section DL path between each identified pair of non-adjacent DL-equipped nodes; and causing the deployed DL hardware to supply DL light to each of the single- and the multi-section DL paths.
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9.发明申请SHORT-TERM OPTICAL RECOVERY SYSTEMS AND METHODS FOR COHERENT OPTICAL RECEIVERS 有权短期光学恢复系统和相关光接收机的方法公开(公告)号：US20130051809A1
公开(公告)日：2013-02-28
申请号：US13216941
申请日：2011-08-24
IPC分类号： H04B10/06
CPC分类号： H04B10/03 , H04B10/032 , H04B10/6161
摘要： The present disclosure provides short-term optical recovery systems and methods in coherent optical receivers to minimize recovery time for fault scenarios and signal reacquisition while maintaining robust signal acquisition. The short-term optical recovery systems and methods include special techniques and algorithms to minimize recovery time. The short-term optical recovery systems and methods include an expedited acquisition engine that includes a reference clock recovery, a compensator to remove chromatic dispersion, a burst framer, and a compensator to remove polarization dispersion. Importantly, the expedited acquisition engine uses a memory-oriented architecture to allow some properties of the acquisition engine to be stored during initial acquisition and, hence, later on be deployed in any fault scenario to further expedite recovery of a signal. The expedited acquisition engine leverages on a frequency aligned Local Oscillator (LO) as well as pre-calculated dispersion maps and equalizer coefficients.
摘要翻译： 本公开提供了相干光接收机中的短期光学恢复系统和方法，以最小化故障场景的恢复时间和信号重新采集，同时保持鲁棒的信号采集。 短期光学恢复系统和方法包括特殊技术和算法，以最大限度地减少恢复时间。 短期光学恢复系统和方法包括加速采集引擎，其包括参考时钟恢复，用于去除色散的补偿器，突发成帧器和补偿器以去除偏振色散。 重要的是，加速采集引擎使用面向内存的架构，以允许在初始采集期间存储采集引擎的某些属性，并且因此随后部署在任何故障场景中以进一步加速信号的恢复。 加速采集引擎利用频率对准的本地振荡器（LO）以及预先计算的色散映射和均衡器系数。
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公开(公告)号：US20210014584A1
公开(公告)日：2021-01-14
申请号：US16508652
申请日：2019-07-11
申请人： Hamid MEHRVAR , Chunshu ZHANG
发明人： Hamid MEHRVAR , Chunshu ZHANG
IPC分类号： H04Q11/00 , H04L29/06 , H04J14/02 , H04B10/516 , H04B10/67
摘要： A system and method for a tunable optical delay line. The tunable optical delay line comprises a coarse delay portion that provides a coarse delay amount, the coarse delay portion including a coarse delay selection element in conjunction with a coarse delay element, the coarse delay selection element incorporated on-chip into a photonic integrated circuit (IC) component, the coarse delay element being disposed off-chip of the photonic IC component and interconnected with the coarse delay selection element; and a fine delay element that provides a fine delay amount, the fine delay element interconnected in series with the coarse delay selection element, the optical delay line being tunable to a target delay amount by agglomerating the coarse and fine delay amounts.
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