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31. 发明授权

US10498464B2 Systems and methods for concealing waveform properties 有权
公开(公告)号：US10498464B2
公开(公告)日：2019-12-03
申请号：US16002680
申请日：2018-06-07
申请人： RAYTHEON COMPANY
发明人： Gary M. Graceffo , Benjamin P. Dolgin , Andrew Kowalevicz
IPC分类号： H04B10/85 , H04B10/11 , H04B10/112 , H04B10/07 , H04B10/67 , H04B10/556 , H04B10/54 , H04B10/50 , H04B10/60
CPC分类号： H04B10/85 , H04B10/0705 , H04B10/11 , H04B10/1129 , H04B10/50 , H04B10/541 , H04B10/5561 , H04B10/5563 , H04B10/60 , H04B10/677
摘要： Aspects are generally directed to free-space transmitters, free-space receivers, and free-space communication methods. In one example, a free-space communication method includes acts of mapping a data payload to one or more symbols based on a symbol set defined by a digital modulation scheme, varying one or more properties of a signal waveform to phase modulate the signal waveform with the data payload, the one or more symbols each having a symbol duration that defines a timing structure of the modulated signal waveform, and fragmenting the timing structure of the modulated signal waveform to conceal one or more waveform properties of the modulated signal waveform.

32. 发明申请

US20190222309A1 SYSTEM AND A METHOD FOR DETECTING THE INSTALLATION OF AN OPTICAL TAP AND A METHOD OF SECURING AN OPTICAL SIGNAL IN AN OPTICAL FIBER 审中-公开
公开(公告)号：US20190222309A1
公开(公告)日：2019-07-18
申请号：US16324511
申请日：2017-08-09
申请人： MACQUARIE UNIVERSITY
发明人： Simon GROSS , Michael WITHFORD
IPC分类号： H04B10/07 , H04B10/073
CPC分类号： H04B10/0705 , G02B6/0288 , G02B6/125 , G02B6/14 , G02B6/2821 , G02B2006/1209 , G02B2006/12152 , G02B2006/12164 , H04B10/073 , H04B10/077 , H04B10/85
摘要： A system for detecting the installation of an optical tap on an optical fiber link. The system comprises a spatial mode de-multiplexer optically coupled to the optical fiber link. The spatial mode de-multiplexer is configured to isolate an optical signal in a first spatial mode of the optical fiber link. The spatial mode de-multiplexer is configured to isolate light in a second spatial mode of the optical fiber link 14. The system comprises an optical sensor optically coupled to the spatial mode de-multiplexer for measuring the optical power of the light in the second spatial mode of the optical fiber link. Also disclosed herein are methods for detecting installation of an optical tap and methods for securing an optical signal in an optical fiber.

33. 发明申请

US20180212677A1 OPTICAL LINE CARD FOR WAVELENGTH DIVISION MULTIPLEXED SIGNALS 审中-公开
公开(公告)号：US20180212677A1
公开(公告)日：2018-07-26
申请号：US15933052
申请日：2018-03-22
申请人： OYSTER OPTICS, LLC
发明人： Peter SNAWERDT
IPC分类号： H04B10/071 , H04B10/85 , H04B10/07 , H04B10/079
CPC分类号： H04B10/071 , H04B10/0705 , H04B10/07955 , H04B10/85
摘要： A transceiver card for a telecommunications box for transmitting data over a first optical fiber and receiving data over a second optical fiber. The card has transmitter for transmitting data over the first optical fiber, the transmitter having a laser and a modulator, a fiber output optically connected to the laser for connecting the first optical fiber to the card, a fiber input for connecting the second optical fiber to the card, a receiver optically connected to the fiber input for receiving data from the second optical fiber, and an OTDR optically connected between the transmitter and the fiber output or between the receiver and the fiber input. An energy level detector is also provided between the receiver and the fiber input.

34. 发明授权

US10020893B2 Communication device, quantum key distribution system, quantum key distribution method, and computer program product 有权
公开(公告)号：US10020893B2
公开(公告)日：2018-07-10
申请号：US15265179
申请日：2016-09-14
申请人： Kabushiki Kaisha Toshiba
发明人： Yoshimichi Tanizawa , Akira Murakami , Alex Dixon
IPC分类号： H04B10/25 , H04B10/70 , H04B10/07 , H04L9/08
CPC分类号： H04B10/70 , G06F21/602 , G06F2221/2151 , H04B10/0705 , H04L9/0858
摘要： According to an embodiment, a communication device is connected to another communication device through a quantum communication channel and a classical communication channel to share an encryption key. The device includes a photon detector, a measurer, a difference generator, and a transmitter. The photon detector is configured to detect photons transmitted from the other communication device through the quantum communication channel. The measurer is configured to measure time when each photon is detected by the photon detector as time stamp information. The difference generator is configured to generate difference time stamp information as a difference between time obtained by adding particular information to the time indicated by the time stamp information previously measured by the measurer and time indicated by the time stamp information subsequently measured by the measurer. The transmitter is configured to transmit the difference time stamp information to the other communication device through the classical communication channel.

35. 发明授权

US10014933B2 Transmitting communications traffic across an optical communication network 有权
公开(公告)号：US10014933B2
公开(公告)日：2018-07-03
申请号：US15028937
申请日：2013-10-15
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Roberto Magri , Giulio Bottari
IPC分类号： H04B10/00 , H04B10/07 , H04L12/707 , H04B10/25 , H04Q11/00 , H04L12/723 , H04L12/721
CPC分类号： H04B10/0705 , H04B10/25 , H04L45/24 , H04L45/502 , H04L45/62 , H04Q11/0062 , H04Q2011/0077 , H04Q2011/0081
摘要： A method of transmitting communications traffic in an optical communication network comprising a plurality of nodes, the method comprising, at a source node: receiving communications traffic to be transmitted across the optical communication network to a target node; obtaining a path sequence defining an order in which a plurality of optical paths from the source node to the target node across the optical communication network are to be used, at least part of each optical path being spatially separate from each other optical path; and transmitting the communications traffic as a series of traffic portions, each traffic portion being transmitted for a respective preselected transmission period on a respective optical path according to the path sequence.

36. 发明申请

US20170373747A1 FIBER OPTIC TELECOMMUNICATIONS CARD WITH ENERGY LEVEL MONITORING 审中-公开
公开(公告)号：US20170373747A1
公开(公告)日：2017-12-28
申请号：US15680915
申请日：2017-08-18
申请人： OYSTER OPTICS, LLC
发明人： Peter SNAWERDT
IPC分类号： H04B10/071 , H04B10/07 , H04B10/079 , H04B10/85
CPC分类号： H04B10/071 , H04B10/0705 , H04B10/07955 , H04B10/85
摘要： A transceiver card for a telecommunications box for transmitting data over a first optical fiber and receiving data over a second optical fiber. The card has transmitter for transmitting data over the first optical fiber, the transmitter having a laser and a modulator, a fiber output optically connected to the laser for connecting the first optical fiber to the card, a fiber input for connecting the second optical fiber to the card, a receiver optically connected to the fiber input for receiving data from the second optical fiber, and an OTDR optically connected between the transmitter and the fiber output or between the receiver and the fiber input. An energy level detector is also provided between the receiver and the fiber input.

37. 发明申请

US20170346553A1 FIBER OPTIC ASSEMBLIES FOR TAPPING LIVE OPTICAL FIBERS IN FIBER OPTIC NETWORKS EMPLOYING WDM TECHNOLOGY 审中-公开
公开(公告)号：US20170346553A1
公开(公告)日：2017-11-30
申请号：US15605438
申请日：2017-05-25
申请人： Corning Optical Communications LLC
发明人： Brian Keith Rhoney , Diana Rodriguez , Harley Joseph Staber
IPC分类号： H04B10/07 , H04B10/079 , G02B6/38 , G02B6/44 , H04J14/02 , H04B10/27
CPC分类号： H04B10/0705 , G02B6/3897 , G02B6/4446 , H04B10/07957 , H04B10/27 , H04J14/0227
摘要： A fiber optic assembly for supporting optical connections in a fiber optic network employing parallel optical configurations is described. In one embodiment, the fiber optic assembly includes at least two live multi-fiber components and at least one tap multi-fiber component. Optical signals are routed from one live multi-fiber component to another in a parallel optical connection configuration, with each group of optical signals corresponding to a respective group of fiber positions on each live multi-fiber component. Each group of optical signals is also routed to one of the first and second groups of fiber positions of the at least one tap multi-fiber component in a parallel optical connection configuration. In this manner, fiber optic signals can be simultaneously provided and monitored within an active fiber optic network using a parallel optical configuration without the need for interrupting network operations.

38. 发明申请

US20170244478A1 SECURED FIBER LINK SYSTEM 审中-公开
公开(公告)号：US20170244478A1
公开(公告)日：2017-08-24
申请号：US15435619
申请日：2017-02-17
申请人： APRIORI NETWORK SYSTEMS, LLC
发明人： Gary M. WEINER
IPC分类号： H04B10/07 , H04B10/85
CPC分类号： H04B10/0705 , H04B10/85 , H04L29/00
摘要： A fiber link system, method and device for masking signals on a fiber link system. The system includes sending a desired sequence of information in the form of a true signal that is typically intended to be transferred between legitimate users at both ends of a link. Sending chaff signals, or subterfuge signals, alongside the true signal to mask such legitimate signals in the fiber cable from intruders tapping into the fiber cable.

39. 发明授权

US09614613B2 Communication network element and method of mitigating an optical jamming attack against an optical communication system 有权
公开(公告)号：US09614613B2
公开(公告)日：2017-04-04
申请号：US14650358
申请日：2012-12-12
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Gianmarco Bruno
IPC分类号： H04B10/00 , H04B10/07 , H04Q11/00 , H04B10/85 , H04K3/00 , H04J14/00
CPC分类号： H04B10/0705 , H04B10/85 , H04K3/228 , H04K2203/14 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0049 , H04Q2011/0083
摘要： A communication network element (10) comprising: an optical path (12) for an optical communication signal (14); a monitoring port (16) arranged to output an optical monitoring signal; an optical splitter (20) provided in the optical path, the optical splitter arranged to receive the optical communication signal and to split off a part of the optical communication signal to form the optical monitoring signal; and optical isolation apparatus (22) connected between the optical splitter and the monitoring port, the optical isolation apparatus arranged to transmit the optical monitoring signal propagating towards the monitoring port and arranged to apply an attenuation, IA, to an attacking optical signal (24) propagating from the monitoring port towards the optical splitter to thereby prevent a substantial part of the attacking optical signal being transmitted to the optical path.

40. 发明申请

US20160119056A1 Security Monitoring for Optical Network 有权
标题翻译：光网络安全监控
公开(公告)号：US20160119056A1
公开(公告)日：2016-04-28
申请号：US14897528
申请日：2013-06-11
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Matteo COSTANTINI , Roberto MAGRI
IPC分类号： H04B10/07 , H04L29/06
CPC分类号： H04B10/0705 , H04B10/85 , H04J14/0212 , H04L63/10 , H04L63/1416 , H04L63/1425
摘要： Apparatus (10) for an optical communications network has optical paths for optical traffic, and optical ports (20,40), one of which is an unused input port (20). A security monitoring system (30) has a blocking part (50) comprising an interface (51) coupled removably to the unused input port (20) to occupy it to prevent unauthorised access. A light source is optically coupled to the interface(51) such that, when the interface is coupled to the unused input port, light can be transmitted through the interface (51) into the unused input port (20). An optical detector (60) can detect light reflected back from the interface (51), and there is alarm circuitry (70) configured to output an alarm signal based on the detecting of the reflected light. This monitoring can help make the node more secure from interference such as the introduction of a noise signal. The system can be passive or active, and does not require a change in the installed node configuration and so can be added easily to existing infrastructure.
摘要翻译：用于光通信网络的设备（10）具有用于光业务的光路，以及光端口（20,40），其中一个是未使用的输入端口（20）。安全监控系统（30）具有阻塞部分（50），包括可移除地连接到未使用的输入端口（20）的接口（51），以占用它以防止未经授权的访问。光源光耦合到接口（51），使得当接口耦合到未使用的输入端口时，光可以通过接口（51）传输到未使用的输入端口（20）中。光学检测器（60）可以检测从接口（51）反射回来的光，并且存在被配置为基于反射光的检测来输出报警信号的报警电路（70）。该监视可以帮助节点更安全地防止诸如引入噪声信号的干扰。该系统可以是被动或主动的，并且不需要更改已安装的节点配置，因此可以轻松地添加到现有的基础设施。

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