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1.发明申请Intrusion Detection System for Use on Single Mode Optical Fiber Using a Simplified Polarimeter 有权使用简化极化仪在单模光纤上使用的入侵检测系统公开(公告)号：US20120076453A1
公开(公告)日：2012-03-29
申请号：US13309087
申请日：2011-12-01
申请人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
发明人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
IPC分类号： G02B6/00
CPC分类号： H04B10/85 , G02B6/276 , H04B10/071 , H04B10/532 , H04L63/1416
摘要： A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
摘要翻译： 电信光纤通过在入侵事件之前检测光纤的操作来防止入侵。 这可以用在检测端与发射端相对的定位系统中，或者在使用菲涅尔反射和瑞利后向散射到发射端的定位系统中来检测并定位运动。 瑞利后向散射时间分片数据可以存储在寄存器中，直到检测到入侵事件。 该检测是通过偏振检测系统进行的，该偏振检测系统包括以经济构造简化形式制造的分光器。 这使用未校准的分离器和小于所有四个斯托克斯参数。 它可以使用限于线性和圆偏振的偏振计类型功能，或者使用90度的两个线性偏振器。
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2.发明授权公开(公告)号：US07333681B2
公开(公告)日：2008-02-19
申请号：US11461661
申请日：2006-08-01
申请人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
发明人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
IPC分类号： G02B6/00
CPC分类号： G02B6/421 , G02B6/14 , G02B6/24 , H04B10/071
摘要： A telecommunications multimode optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. Pulses are injected using a launch arrangement which generates a narrow spectral width, under-filled, non-uniform mode field power distribution in the multimode optical fiber and Fresnel reflections and Rayleigh backscattering from the pulse are detected at the transmit end to monitor the modal power distribution in the fiber which changes on manipulation of the fiber. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a modal power distribution detection system which includes an optical coupler to tap off a portion of the light which contains the higher order signal modes.
摘要翻译： 电信多模光纤通过在入侵事件之前检测光纤的操纵来抵抗侵入。 使用发射装置注入脉冲，其在多模光纤中产生窄的光谱宽度，欠补充，不均匀的模场功率分布，并且在发射端检测来自脉冲的菲涅耳反射和瑞利反向散射以监测模态功率 纤维中的分布在纤维的操纵上改变。 瑞利后向散射时间分片数据可以存储在寄存器中，直到检测到入侵事件。 该检测是通过模式配电检测系统进行的，该系统包括光耦合器以分离包含较高阶信号模式的一部分光。
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3.发明授权Intrusion detection system for use on single mode optical fiber using a polarimeter 有权使用旋光仪在单模光纤上使用的入侵检测系统公开(公告)号：US07206469B2
公开(公告)日：2007-04-17
申请号：US11152681
申请日：2005-06-15
申请人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
发明人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
CPC分类号： H04B10/85 , G02B6/276 , H04B10/071 , H04B10/532 , H04L63/1416
摘要： A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
摘要翻译： 电信光纤通过在入侵事件之前检测光纤的操作来防止入侵。 这可以用在检测端与发射端相对的定位系统中，或者在使用菲涅尔反射和瑞利后向散射到发射端的定位系统中来检测并定位运动。 瑞利后向散射时间分片数据可以存储在寄存器中，直到检测到入侵事件。 该检测是通过偏振检测系统进行的，该偏振检测系统包括以经济构造简化形式制造的分光器。 这使用未校准的分离器和小于所有四个斯托克斯参数。 它可以使用限于线性和圆偏振的偏振计类型功能，或者使用90度的两个线性偏振器。
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公开(公告)号：US07092586B2
公开(公告)日：2006-08-15
申请号：US11137777
申请日：2005-05-26
申请人： David E. Vokey , Mark K. Bridges , Cary R. Murphy
发明人： David E. Vokey , Mark K. Bridges , Cary R. Murphy
CPC分类号： H04B10/0771 , G02B6/262 , G02B6/4469
摘要： A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the remote end of the cable is sampled by use of a coupler and monitored for transient changes in the mode field power distribution. The power distribution changes with physical disturbance of the cable. When those changes are detected as being characteristic of fiber intrusion, the system activates an alarm. This method can sense and alarm any attempt to access the optical fibers in a fiber optic communication cable. In preferred embodiments, the active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.
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公开(公告)号：US07706641B2
公开(公告)日：2010-04-27
申请号：US11461917
申请日：2006-08-02
IPC分类号： G02B6/00
CPC分类号： H04B10/85
摘要： Some or all of the optical fibers of a single-mode or multi-mode cable are monitored for intrusion by transmitting through the fibers a signal which can be analyzed for changes in its characteristics which are indicative of movement as a prelude to an intrusion event. To avoid independent monitors of all of the fibers, in some cases the same light signal is looped through a plurality of the fibers in series by passive jumpers. Switches can be used to disconnect out those fibers which are compromised. As an alternative a plurality of separate monitoring signals can be provided each associated with its own sensor where unique combinations of the signals are transmitted through separate fibers allowing a higher number of fibers to be monitored than the number of signals.
摘要翻译： 监测单模或多模光缆的部分或全部光纤通过光纤传输一个信号，该信号可以分析其特性的变化，这些变化表示作为入侵事件的前奏的移动。 为了避免所有光纤的独立监视器，在某些情况下，相同的光信号通过被动跳线串联的多根光纤环绕。 开关可用于断开那些被损坏的纤维。 作为替代，可以提供多个单独的监视信号，每个独立的监视信号与其自己的传感器相关联，其中信号的独特组合通过分开的光纤传输，允许监视比信号数量更多的光纤。
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6.发明授权Intrusion detection system for use on single mode optical fiber using a simplified polarimeter 有权使用简化旋光仪在单模光纤上使用的入侵检测系统公开(公告)号：US08094977B2
公开(公告)日：2012-01-10
申请号：US11152680
申请日：2005-06-15
申请人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
发明人： Cary R. Murphy , David E. Vokey , Mark K. Bridges
CPC分类号： H04B10/85 , G02B6/276 , H04B10/071 , H04B10/532 , H04L63/1416
摘要： A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
摘要翻译： 电信光纤通过在入侵事件之前检测光纤的操作而被抵抗入侵。 这可以用在检测端与发射端相对的定位系统中，或者在使用菲涅尔反射和瑞利后向散射到发射端的定位系统中来检测并定位运动。 瑞利后向散射时间分片数据可以存储在寄存器中，直到检测到入侵事件。 该检测是通过偏振检测系统进行的，该偏振检测系统包括以经济构造简化形式制造的分光器。 这使用未校准的分离器和小于所有四个斯托克斯参数。 它可以使用限于线性和圆偏振的偏振计类型功能，或者使用90度的两个线性偏振器。
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7.发明申请INTRUSION DETECTION SYSTEM FOR USE ON SINGLE MODE OPTICAL FIBER USING A COST REDUCED POLARIMETER 有权使用降低成本的极化器在单模光纤上使用的侵入检测系统公开(公告)号：US20100054657A1
公开(公告)日：2010-03-04
申请号：US11152663
申请日：2005-06-15
申请人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
发明人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
IPC分类号： G02B6/00
CPC分类号： H04B10/85 , G02B6/276 , H04B10/071 , H04B10/532 , H04L63/1416
摘要： A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
摘要翻译： 电信光纤通过在入侵事件之前检测光纤的操作来防止入侵。 这可以用在检测端与发射端相对的定位系统中，或者在使用菲涅尔反射和瑞利后向散射到发射端的定位系统中来检测并定位运动。 瑞利后向散射时间分片数据可以存储在寄存器中，直到检测到入侵事件。 该检测是通过偏振检测系统进行的，该偏振检测系统包括以经济构造简化形式制造的分光器。 这使用未校准的分离器和小于所有四个斯托克斯参数。 它可以使用限于线性和圆偏振的偏振计类型功能，或者使用90度的两个线性偏振器。
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公开(公告)号：US07403675B2
公开(公告)日：2008-07-22
申请号：US11461915
申请日：2006-08-02
CPC分类号： H04B10/2581 , G02B6/255 , G08B13/186 , G08B13/1895 , H04B10/85
摘要： Intrusion detection for a multimode fiber optic cable uses a light signal launched into the fiber through the low ratio leg of a tap coupler to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes at the remote end is monitored for transient changes in the mode field power distribution which are characteristic of fiber intrusion to activate an alarm. The active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.
摘要翻译： 多模光纤电缆的入侵检测使用通过分接耦合器的低比例支路发射到光纤中的光信号，以建立电缆中未充分的非均匀模场分布的窄光谱宽度。 监测远端高阶信号模式的一小部分，以模拟现场功率分配的瞬态变化进行监测，这是光纤入侵的特征，用于激活报警。 监测多模光纤的有源信号，用于信号劣化和瞬态功率干扰模式，可以指示光纤损坏或物理入侵。 可以在现有光纤系统中提供转换器，其中数据信号在波长和/或发射条件下被转换，以在另一非优化系统中优化监视信号。
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9.发明授权Intrusion detection system for a multimode optical fiber using a bulk optical wavelength division multiplexer for maintaining modal power distribution 有权用于多模光纤的入侵检测系统，其使用批量光波分复用器来维持模态功率分布公开(公告)号：US07403674B2
公开(公告)日：2008-07-22
申请号：US11461905
申请日：2006-08-02
申请人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
发明人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
CPC分类号： G02B6/421 , G02B6/2852 , G02B6/29385 , H04B10/2581 , H04B10/85
摘要： Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the fiber. A small portion of the higher order signal modes at the a second location also spaced from the destination is sampled by a tap coupler and monitored for transient changes in the mode field power distribution which are characteristic of intrusion to activate an alarm. A fiber being used for data transmission can be monitored for intrusion by introducing a monitor wavelength different from that of the data signal. Central to this invention is the use of a bulk optic (commonly referred to as a pass/reflect) wavelength division multiplexer, one which maintains the modal distribution within the fiber.
摘要翻译： 仅在多模光纤中的一部分的入侵检测使用通过单模光纤与光源隔开的位置发射到光纤中的光信号，以建立窄光谱宽度，光纤中未充分的非均匀模场分布 。 在距离目的地间隔的第二位置的较高阶信号模式的一小部分由抽头耦合器采样，并监视模式场功率分布中的瞬态变化，这是入侵特性以激活报警。 可以通过引入与数据信号不同的监视波长来监视用于数据传输的光纤入侵。 本发明的核心是使用在光纤内保持模态分布的体光学（通常称为通过/反射）波分复用器。
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10.发明授权Remote location of active section of fiber in a multimode intrusion detection system 有权在多模入侵检测系统中远程定位光纤的活动部分公开(公告)号：US07376293B2
公开(公告)日：2008-05-20
申请号：US11461889
申请日：2006-08-02
申请人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
发明人： Cary R. Murphy , Mark K. Bridges , David E. Vokey
CPC分类号： H04B10/0791 , G02B6/14 , G02B6/421 , H04B10/077 , H04B10/07953 , H04B10/07955 , H04B10/2581 , H04B10/85 , H04J14/02
摘要： Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the fiber. A small portion of the higher order signal modes at the a second location also spaced from the destination is sampled by a tap coupler and monitored for transient changes in the mode field power distribution which are characteristic of intrusion to activate an alarm. The active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.
摘要翻译： 仅在多模光纤中的一部分的入侵检测使用通过单模光纤与光源隔开的位置发射到光纤中的光信号，以建立窄光谱宽度，光纤中未充分的非均匀模场分布 。 在距离目的地间隔的第二位置的较高阶信号模式的一小部分由抽头耦合器采样，并监视模式场功率分布中的瞬态变化，这是入侵特性以激活报警。 监测多模光纤的有源信号，用于信号劣化和瞬态功率干扰模式，可以指示光纤损坏或物理入侵。 可以在现有光纤系统中提供转换器，其中数据信号在波长和/或发射条件下被转换，以在另一非优化系统中优化监视信号。
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