-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
公开(公告)号：US20210255393A1
公开(公告)日：2021-08-19
申请号：US16791774
申请日：2020-02-14
摘要： An aspect of the disclosure provides an optical device including a microring resonator (MRR).
-
9.发明申请公开(公告)号：US20210013962A1
公开(公告)日：2021-01-14
申请号：US16506571
申请日：2019-07-09
IPC分类号： H04B10/077 , H04J14/02 , G01H9/00 , H04B10/035
摘要： There is provided apparatuses to detect occurrence and location of damages on optical fiber links in advance by converting an optical span in optical network to an interferometry based sensing media. The interferometry based sensing media may enable detection of mechanical perturbation or mechanical vibration occurred on optical fiber links across optical network. The system employed with the interferometry based sensing media can detect occurrence of mechanical perturbation or mechanical vibration as well as discover the location of such event occurred using standard interferometry based sensing techniques.
-
10.发明申请公开(公告)号：US20210075674A1
公开(公告)日：2021-03-11
申请号：US16567343
申请日：2019-09-11
IPC分类号： H04L12/24 , H04Q11/00 , H04B10/079
摘要： A method and apparatus for controlling an optical switch. The switch includes a switching fabric and optical amplifiers for amplifying optical signals. A configuration for the switching fabric is generated and implemented. The configuration indicates a set of optical paths between switching fabric input ports and the output ports. Optical path losses through the switching fabric vary based on the configuration. An amplifier control signal for controlling gains of the optical amplifiers, is also provided. The configuration for the switching fabric is generated based on the gains of the optical amplifiers, the amplifier control signal is generated based on the configuration for the switching fabric, or both.
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.029 秒)
