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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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公开(公告)号：US10205534B2
公开(公告)日：2019-02-12
申请号：US15402914
申请日：2017-01-10
IPC分类号： H04B10/61 , H04B10/40 , H04B10/516 , H04B10/25
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：US20180007455A1
公开(公告)日：2018-01-04
申请号：US15201563
申请日：2016-07-04
申请人： HAMID MEHRVAR
发明人： HAMID MEHRVAR
IPC分类号： H04Q11/00 , H04L12/947
CPC分类号： H04Q11/0062 , H04L49/25 , H04Q11/0005 , H04Q2011/005 , H04Q2011/0064 , H04Q2011/0083 , H04Q2011/0086
摘要： The present application provides methods of determining bandwidth demands and allocating bandwidth for a network including a plurality of groups of sub-networks. Each subnetwork includes a plurality of server racks and an aggregation switch node configured to control the flow of traffic to and from the plurality of server racks in the subnetwork. The aggregation switch nodes in the network are optically coupled to one another via at least one switch controlled by a switch controller. Each group of subnetworks of the plurality of groups of subnetworks also includes a group controller in communication with each of the aggregation switch nodes in the group. The group controllers are communicatively coupled to one another. The interaction between the aggregation switch nodes, the group controllers and the switch controllers enable distributed and dynamic control of switching between the subnetworks.
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公开(公告)号：US20170325009A1
公开(公告)日：2017-11-09
申请号：US15145850
申请日：2016-05-04
申请人： Hamid Mehrvar
发明人： Hamid Mehrvar
IPC分类号： H04Q11/00 , H04L12/947 , H04B10/70
CPC分类号： H04Q11/0005 , H04Q2011/0039 , H04Q2011/0041 , H04Q2011/005 , H04Q2011/0083 , H04Q2011/009
摘要： Large photonic switches can establish optical paths between a large number of inputs and outputs. A distributed control architecture may be used in order to quickly establish the optical paths in large photonic switches. The distributed control architecture may provide a hierarchical control by grouping together endpoints, determining switching requirements between the groups and determining switching requirements within the groups.
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公开(公告)号：US20170311056A1
公开(公告)日：2017-10-26
申请号：US15136378
申请日：2016-04-22
申请人： HAMID MEHRVAR
发明人： HAMID MEHRVAR
IPC分类号： H04Q11/00 , H04L12/947
摘要： Aspects of the disclosure involve a source node, having some predetermined knowledge of the optical network generating a list of nodes and/or optical links between nodes that form a route in the optical network from the source node to the destination node. The nodes in the optical network do not necessarily need to know the entire route from source node to destination node. Each node simply decodes the control information identifying the next hop in the route towards the destination node. By utilizing the decoded control information identifying the next hop, a switch in the node can be controlled to route the optical signal including the payload and some or all of the control information onto the next optical link toward the destination node.
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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：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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公开(公告)号：US10511382B2
公开(公告)日：2019-12-17
申请号：US15883540
申请日：2018-01-30
IPC分类号： H04B10/079 , H04B10/071 , H04B10/299 , H04J14/02 , H04B10/80
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：US10306344B2
公开(公告)日：2019-05-28
申请号：US15201563
申请日：2016-07-04
申请人： Hamid Mehrvar
发明人： Hamid Mehrvar
IPC分类号： H04B10/04 , H04Q11/00 , H04L12/947
摘要： The present application provides methods of determining bandwidth demands and allocating bandwidth for a network including a plurality of groups of sub-networks. Each subnetwork includes a plurality of server racks and an aggregation switch node configured to control the flow of traffic to and from the plurality of server racks in the subnetwork. The aggregation switch nodes in the network are optically coupled to one another via at least one switch controlled by a switch controller. Each group of subnetworks of the plurality of groups of subnetworks also includes a group controller in communication with each of the aggregation switch nodes in the group. The group controllers are communicatively coupled to one another. The interaction between the aggregation switch nodes, the group controllers and the switch controllers enable distributed and dynamic control of switching between the subnetworks.
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公开(公告)号：US20180270009A1
公开(公告)日：2018-09-20
申请号：US15459610
申请日：2017-03-15
IPC分类号： H04J14/02 , H04Q11/00 , H04B10/079
摘要： A wavelength selective switch (WSS), reconfigurable optical add-drop multiplexer (ROADM) and methods of determining a condition of a domain network section are provided. The WSS and ROADM include a light source for sending an optical signal having a characteristic. The method comprises instructing a light source to send an optical signal across an optical link, obtaining measurements of characteristic values of the optical signal received at and sent by components along the domain network section, comparing the characteristic values to pre-defined limits, and determining the condition of the domain network section based on the characteristic values.
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