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71. 发明授权

US06522434B1 System and method for determining optical loss characteristics of optical fibers in an optical fiber network 失效
标题翻译：用于确定光纤网络中光纤的光损耗特性的系统和方法
公开(公告)号：US06522434B1
公开(公告)日：2003-02-18
申请号：US09374020
申请日：1999-08-13
申请人： Mark Richard Jennings , Frank Salvatore Leone , Richard Joseph Pimpinella
发明人： Mark Richard Jennings , Frank Salvatore Leone , Richard Joseph Pimpinella
IPC分类号： H04B1008
CPC分类号： H04B10/077 , H04B10/07955
摘要： A system and method for determining the optical loss characteristics of optical fibers in an optical fiber network. An optical transmission module is provided. The optical transmission module produces a light signal and an electrical signal that contains data regarding the characteristics of the light signal being generated. The light signal output of the optical transmitter module is connected to the input of a calibrated optical switch. The outputs of the optical switch are connected to the optical fibers that are to be tested. At the opposite ends of the optical fibers, a second optical switch is provided. The second optical switch connects the various optical fibers to a monitor module. The monitor module detects the light signal transmitted by the optical transmitter module through the various optical fibers. The monitor module converts the received light signal into a corresponding electrical signal. A systems controller is coupled to both the optical transmitter module and the monitor module.
摘要翻译：一种用于确定光纤网络中光纤的光损耗特性的系统和方法。提供光传输模块。光传输模块产生光信号和包含关于所生成的光信号的特性的数据的电信号。光发射机模块的光信号输出连接到校准光开关的输入端。光开关的输出端与要测试的光纤连接。在光纤的相对端设有第二光开关。第二光开关将各种光纤连接到监视器模块。监视器模块通过各种光纤检测由光发射模块发射的光信号。监视器模块将接收到的光信号转换成相应的电信号。系统控制器耦合到光发射机模块和监视器模块。

72. 发明授权

US06490063B1 Analog optical transmission system 失效
标题翻译：模拟光传输系统
公开(公告)号：US06490063B1
公开(公告)日：2002-12-03
申请号：US09354562
申请日：1999-07-16
申请人： Yoshihiro Imajo
发明人： Yoshihiro Imajo
IPC分类号： H04B1008
CPC分类号： H04B10/0771 , H04B2210/071 , H04B2210/075
摘要： To make it possible to detect faults of optical fibers only by allowing the Master unit side to monitor those fibers in an optical transmission system for bilateral communication of analog optical signals by use of two-route optical fibers between the Master and Slave units. An oscillator of a Master unit oscillates a monitoring signal having a frequency different from that of the RF multiplex signal, a composition means synthesizes these two signals, and a light emission means transmits the synthesized signal to a light reception means of a Slave unit via a downlink optical fiber. A filter means at the Slave unit separates the monitoring signal from the received optical signal, the Slave composition means synthesizes the separated signal and the RF multiplex signal, and a light emission means converts the synthesized signal into an optical signal having a constant average optical power and transmits it to a light reception means at the Master unit via an uplink optical fiber. A detection means at the Master unit detects an average photo-electric power of the received optical signal, a filter means separates the monitoring signal from the concerned optical signal, and a detection means detects the level of thus separated signal.
摘要翻译：仅通过允许主单元侧监视光传输系统中的光纤，通过使用主设备和从设备之间的双路光纤双向通信模拟光信号，才能够检测光纤的故障。振荡器主单元振荡具有与RF多路复用信号的频率不同的频率的监视信号，合成装置合成这两个信号，并且发光装置经由下行链路光纤将合成信号发送到从单元的光接收装置纤维。在从单元处的滤波器装置将监测信号与接收到的光信号分开，从组合装置合成分离信号和RF多路复用信号，发光装置将合成信号转换成具有恒定平均光功率的光信号并通过上行光纤将其发送到主单元的光接收装置。在主单元处的检测装置检测所接收的光信号的平均光电功率，滤波器装置将监控信号与有关的光信号分开，并且检测装置检测这样分离的信号的电平。

73. 发明授权

US06483616B1 Safe repair of malfunction in optical communication system 有权
标题翻译：安全维修光通讯系统故障
公开(公告)号：US06483616B1
公开(公告)日：2002-11-19
申请号：US09391750
申请日：1999-09-08
申请人： David J Maddocks , Paul A Callan
发明人： David J Maddocks , Paul A Callan
IPC分类号： H04B1008
CPC分类号： H04B10/0771 , H04B2210/078 , H04B2210/08
摘要： Following a fault in a bidirectional optical communication system, the lasers which generate traffic-carrying channels and a supervisory channel are shut down to permit personnel to effect repairs safely. The low power supervisory channel is pulsed on at intervals to determine if the fault is still present, but if a receiver is able correctly to restore frame alignment from such a pulse, the reverse direction supervisory channel is enabled, and following frame alignment in both directions, the main lasers are safely turned on.
摘要翻译：在双向光通信系统发生故障之后，产生通信量通道的激光器和监控通道被关闭，以允许人员安全地进行维修。低功率监控通道间隔地脉冲以确定故障是否仍然存在，但是如果接收机能够正确地从这样的脉冲恢复帧对准，则反向监控通道被使能，并且在两个方向上的帧对齐之后主激光器被安全地打开。

74. 发明授权

US06433900B1 Optical wavelength multiplexing system having a redundant configuration 失效
标题翻译：具有冗余配置的光波分复用系统
公开(公告)号：US06433900B1
公开(公告)日：2002-08-13
申请号：US09229863
申请日：1999-03-01
申请人： Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda , Isao Tsuyama
发明人： Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda , Isao Tsuyama
IPC分类号： H04B1008
CPC分类号： H04Q11/0062 , H04J14/0279 , H04J14/0297 , H04Q2011/0016 , H04Q2011/0043 , H04Q2011/0081 , H04Q2011/0083
摘要： A protection switch comprising a demultiplexer, optical selector, a multiplexer, and a monitor circuit is provided on the input side and the output side of an optical XC node. The demultiplexer demultiplexes the wavelength-multiplexed optical signals of a 0-system and a 1-system, and transmits these optical signals to the optical selectors which are provided for the respective wavelengths. The optical selectors are controlled by the monitor circuit, and switch the optical signal of one system to that of the other system when a fault occurs. The optical signals of the respective wavelengths outputted from the optical selectors are multiplexed by a multiplexer to be transmitted. The demultiplexer and the multiplexer can be differently arranged depending on the configuration of a transmission line or the optical XC node. Further, a multi-wavelength selection filter such as an acousto-optical filter or the like can be used as a protection switch.
摘要翻译：在光学XC节点的输入侧和输出侧设置包括解复用器，光选择器，复用器和监视电路的保护开关。解复用器对0系统和1系统的波分复用光信号进行解复用，并将这些光信号发送到为各波长提供的光选择器。光电选择器由监控电路控制，当发生故障时，将一个系统的光信号切换到另一个系统的光信号。从光学选择器输出的各个波长的光信号由复用器复用以被发送。取决于传输线或光学XC节点的配置，解复用器和多路复用器可以被不同地布置。此外，可以使用诸如声光滤波器等的多波长选择滤波器作为保护开关。

75. 发明授权

US06417942B1 Optical communication system and method of controlling optical communication system 失效
标题翻译：光通信系统及控制光通信系统的方法
公开(公告)号：US06417942B1
公开(公告)日：2002-07-09
申请号：US09243121
申请日：1999-02-03
申请人： Ichiro Seto , Tazuko Tomioka , Shigeru Ohshima
发明人： Ichiro Seto , Tazuko Tomioka , Shigeru Ohshima
IPC分类号： H04B1008
CPC分类号： H04B10/278 , H04B10/0775 , H04B10/27 , H04J14/0221
摘要： In this invention, there is provided an optical communication system comprising a plurality of sub-stations and a main station connected to the plurality of sub-stations via an optical transmission path. The plurality of sub-stations respectively comprise modulation section for modulating a wavelength of an optical signal which is transmitted from the respective sub-station to the main station via the transmission path containing information signals by using a control signal having a unique frequency allocated to the sub-station, arbitrary pairs of control signals having different frequency differences. The main station comprises an extraction section for extracting a beat noise component from the received signal which is converted the optical signals modulated by the modulation sections into at the photo-detector, and a determination section for determining two sub-stations that have produced beat noise on the basis of the frequency difference of an arbitrary pair of control signals contained in the beat noise component extracted by the extraction section.
摘要翻译：在本发明中，提供了一种光通信系统，包括多个子站和经由光传输路径连接到多个子站的主站。多个子站分别包括调制部分，用于通过使用具有分配给该信号信号的唯一频率的控制信号，通过包含信息信号的传输路径来调制从各个子站发送到主站的光信号的波长子站，具有不同频率差的任意控制信号对。主站包括：提取部分，用于从接收信号中提取拍频噪声分量，该接收信号将由调制部分调制的光信号转换成光检测器;确定部分，用于确定产生拍频的两个子站基于由提取部分提取的节拍噪声分量中包含的任意一对控制信号的频率差。

76. 发明授权

US06414765B1 Protection switch in a two-fiber optical channel shared protection ring 失效
标题翻译：保护开关在双光纤通道共享保护环
公开(公告)号：US06414765B1
公开(公告)日：2002-07-02
申请号：US09799374
申请日：2001-03-05
申请人： Ming Li , Mark Soulliere , Richard Wagner
发明人： Ming Li , Mark Soulliere , Richard Wagner
IPC分类号： H04B1008
CPC分类号： H04Q11/0062 , H04B10/032 , H04J14/0212 , H04J14/0283 , H04J14/0295 , H04Q2011/0081 , H04Q2011/0083 , H04Q2011/0092
摘要： A protection switch for use in a two-fiber optical channel shared protection ring is disclosed. It includes an electrical switching circuit coupled to an optical signal monitor. The electrical switching circuit includes modular switching fabrics that respond to fault condition alarms provided by the optical signal monitor. Each modular switching fabric is versatile in that it includes a ring switch mode responsive to the multi-wavelength channel failures, and a span switch mode responsive to the single wavelength channel failures. Because the switching fabric of the electrical switching circuit is comprised of the plurality of small modular switching fabrics, the possibility of incurring a single-point switching failure in the switching fabric is virtually eliminated. Further, each modular switching fabric can be easily replaced in the event of failure, without affecting the operation of other switch fabrics within the protection switch.
摘要翻译：公开了一种用于双光纤通道共享保护环的保护开关。它包括耦合到光信号监视器的电开关电路。电气开关电路包括响应由光信号监视器提供的故障状况报警的模块化交换结构。每个模块化交换结构都是通用的，因为它包括响应于多波长信道故障的环形开关模式，以及响应单波长通道故障的量程开关模式。由于电切换电路的交换结构由多个小型模块化交换结构组成，所以实际上消除了在交换结构中导致单点切换故障的可能性。此外，每个模块化交换结构可以在发生故障的情况下容易地更换，而不会影响保护交换机内其他交换结构的操作。

77. 发明授权

US06411407B1 Method for providing a bidirectional optical supervisory channel 有权
标题翻译：提供双向光监控通道的方法
公开(公告)号：US06411407B1
公开(公告)日：2002-06-25
申请号：US09156794
申请日：1998-09-17
申请人： Kenneth Y. Maxham
发明人： Kenneth Y. Maxham
IPC分类号： H04B1008
CPC分类号： H04B10/2918 , H04B10/0773 , H04B10/0775 , H04B2210/071 , H04B2210/078
摘要： Optical supervisory channels are provided in an optical fiber network by receiving, in a first network element (10), a first optical supervisory channel signal (12) at a first wavelength (&lgr;1) from a first direction (14) on a first optical fiber (16), and by transmitting, from the first network element (10), a second optical supervisory channel signal (18) at a second wavelength (&lgr;2) in a second direction (20) and also on the first optical fiber (16). An amplified optical wavelength division multiplexed transmission system utilizing these supervisory signals divides a revenue-traffic amplifying region of an optical amplifier, with a lower portion being used for transmission in the first direction and an upper portion being used for transmission in the second direction. Both the first and second wavelengths are located outside of a flat-gain amplifying region of the optical amplifier.
摘要翻译：通过在第一网络元件（10）中从第一光纤上的第一方向（14）接收第一波长（lambd1）的第一光监控信道信号（12），在光纤网络中提供光监控信道（16），并且通过在第二方向（20）和第一光纤（16）上从第一网络元件（10）发送第二波长（lambd2）的第二光监控信道信号（18）。利用这些监控信号的放大的光波分复用传输系统将光放大器的收费业务放大区域划分为下部，用于沿第一方向传输，上部用于沿第二方向传输。第一和第二波长都位于光放大器的平面增益放大区的外侧。

78. 发明授权

US06407834B1 Optical wave network system and method of monitoring a network trouble 失效
标题翻译：光波网络系统和监控网络故障的方法
公开(公告)号：US06407834B1
公开(公告)日：2002-06-18
申请号：US09153217
申请日：1998-09-14
申请人： Hitoshi Takeshita , Naoya Henmi
发明人： Hitoshi Takeshita , Naoya Henmi
IPC分类号： H04B1008
CPC分类号： H04J14/0295 , H04J14/0201 , H04J14/0227 , H04J14/0245 , H04J14/0249 , H04J14/0283 , H04J14/0284 , H04J14/0286
摘要： Optical regenerative relay amplifier 102 has a function for monitoring the power of optical signals from an optical fiber 101, and issuing an optical signal trouble detection signal (AIS (Alarm Indication Signal)) for shutting down the optical power in case that optical signal inputs are lost, and notifying the trouble, and optical ADMs 103 have a wavelength path selecting function, a wavelength path bundle function, and a wavelength path trouble or quality monitoring function in addition to an AIS issue function, and the optical cross-connect systems 104 have an AIS issue function, a function for monitoring a trouble or quality deterioration of optical signals for every wavelength path, a wavelength path grooming function, and a wavelength path protection function, and the terminal stations 105 transmit and receive services by optical signals having predetermined wavelengths, and monitoring a trouble or quality deterioration of optical signals for every wavelength path is conducted without depending on signal speed and format.
摘要翻译：光学再生继电器放大器102具有用于监视来自光纤101的光信号的功率的功能，并且发出光信号故障检测信号（AIS（报警指示信号）），用于在光信号输入为丢失并通知故障，除了AIS发布功能之外，光ADM103具有波长路径选择功能，波长路径束功能，波长路径故障或质量监视功能，并且光交叉连接系统104具有 AIS发布功能，用于监视每个波长路径的光信号的故障或质量恶化的功能，波长路径梳理功能和波长路径保护功能，并且终端105通过具有预定波长的光信号来发送和接收业务并且对于每个波长路径监视光信号的故障或质量恶化进行根据信号速度和格式。

79. 发明授权

US06366374B2 AC performance monitor with no clock recovery 失效
标题翻译：交流性能监视器，无需时钟恢复
公开(公告)号：US06366374B2
公开(公告)日：2002-04-02
申请号：US09842497
申请日：2001-04-25
申请人： Scott H. Bradshaw , David Macki
发明人： Scott H. Bradshaw , David Macki
IPC分类号： H04B1008
CPC分类号： H04B10/07953
摘要： Apparatus and method for monitoring an optical signal using a locally generated clock signal instead of a clock signal recovered from the optical signal. Numerous eye diagrams are generated based on a ratio between the known local clock and numerous estimates of the bit rate of the optical signal. The best eye diagram is selected, and the actual bit rate of the optical signal is then determined. Given the actual bit rate, time-varying performance of the optical signal may be monitored.
摘要翻译：使用本地生成的时钟信号代替从光信号恢复的时钟信号来监视光信号的装置和方法。基于已知本地时钟与光信号的比特率的许多估计之间的比率生成许多眼图。选择最佳眼图，然后确定光信号的实际比特率。给定实际比特率，可以监视光信号的时变性能。

80. 发明授权

US06359708B1 Optical transmission line automatic power reduction system 失效
标题翻译：光传输线自动减功系统
公开(公告)号：US06359708B1
公开(公告)日：2002-03-19
申请号：US08932679
申请日：1997-09-18
申请人： Vibha Prakash Goel , Bradley A. McKay
发明人： Vibha Prakash Goel , Bradley A. McKay
IPC分类号： H04B1008
CPC分类号： H04B10/564
摘要： A facility is provided which detects the loss of a high power signal in an optical transmission path and invokes a procedure which causes a transmitter connected to the fiber to reduce the power level at which it is transmitting optical signals over the fiber to a safe level.
摘要翻译：提供了一种设备，其检测光传输路径中的高功率信号的损失，并且调用使得连接到光纤的发射机将其在光纤上传输光信号的功率电平降低到安全水平的过程。

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