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1. 发明授权

US08059958B1 Measurement of polarization dependent loss in an optical transmission system 有权
标题翻译：光传输系统中偏振相关损耗的测量
公开(公告)号：US08059958B1
公开(公告)日：2011-11-15
申请号：US12249073
申请日：2008-10-10
申请人： Junfeng Jiang , Rongqing Hui , Douglas L. Richards , Stephen A. Oliva
发明人： Junfeng Jiang , Rongqing Hui , Douglas L. Richards , Stephen A. Oliva
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04B10/0795
摘要： A method is provided for measuring polarization dependent loss in an optical transmission system. In the method, a first optical signal is generated, and a polarization of the first optical signal is altered over time. The first optical signal is combined with a second optical signal from the optical transmission system to yield a combined optical signal, which is coherently detected to yield a radio frequency signal. A power of the radio frequency signal is measured. The measured power of the radio frequency signal is processed to generate an indication of the polarization dependent loss of the optical transmission system.
摘要翻译：提供了一种用于测量光传输系统中的偏振相关损耗的方法。在该方法中，产生第一光信号，第一光信号的极化随时间改变。第一光信号与来自光传输系统的第二光信号组合以产生组合的光信号，其被相干地检测以产生射频信号。测量射频信号的功率。处理射频信号的测量功率以产生光传输系统的偏振相关损耗的指示。

2. 发明授权

US07788547B1 Systems and methods for generation of communication channel fault information 有权
标题翻译：用于生成通信信道故障信息的系统和方法
公开(公告)号：US07788547B1
公开(公告)日：2010-08-31
申请号：US12119560
申请日：2008-05-13
申请人： Stephen A. Oliva , Douglas L. Richards
发明人： Stephen A. Oliva , Douglas L. Richards
IPC分类号： G06F11/00 , H03M13/00 , H04L1/18 , H04W4/00 , H04B10/08 , H04B17/00 , H04N1/00
CPC分类号： H04L1/24 , H03M13/47 , H03M13/612 , H03M13/6306 , H04L1/004 , H04L1/203
摘要： A method is provided for generating fault information associated with a communication channel. In the method, a time-varying error value associated with the communication channel is received. If the error value exceeds a first threshold, a first time value associated with the error value exceeding the first threshold is stored. If the error value then falls and remains below the first threshold for a first minimum time period before the error value exceeds and remains above a second threshold that is higher than the first threshold for a second minimum time period, the first time value is deleted; otherwise, a second time value associated with the error value exceeding the second threshold is stored. The fault information comprises the first time value and the second time value.
摘要翻译：提供了一种用于产生与通信信道相关联的故障信息的方法。在该方法中，接收与通信信道相关联的时变误差值。如果误差值超过第一阈值，则存储与错误值相关联的超过第一阈值的第一时间值。如果误差值在错误值超过之前的第一最小时间段下降并且保持低于第一阈值，并且在第二最小时间段内保持高于第一阈值的第二阈值，则删除第一时间值; 否则，存储与错误值相关联的超过第二阈值的第二时间值。故障信息包括第一时间值和第二时间值。

3. 发明授权

US06907196B2 Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM) 有权
标题翻译：通过密集波分复用（DWDM）测试光纤电信电路的布置和方法
公开(公告)号：US06907196B2
公开(公告)日：2005-06-14
申请号：US10874444
申请日：2004-06-23
申请人： Douglas L. Richards , David W. Williams , Francis R. Yarkosky
发明人： Douglas L. Richards , David W. Williams , Francis R. Yarkosky
IPC分类号： H04B10/02 , H04B10/08 , H04B17/00 , H04J14/02
CPC分类号： H04B10/0793
摘要： An arrangement and a method for testing a telecommunications circuit over Dense Wavelength Division Multiplexing (DWDM). A transmitter, which is optically coupled to the circuit, transmits a test-drive signal on the circuit. Through a network, a performance of the circuit is monitored at points along the circuit based on the transmitted test-drive signal.
摘要翻译：用于通过密集波分复用（DWDM）测试电信电路的布置和方法。光耦合到电路的发射器在电路上传输测试驱动信号。通过网络，基于发送的测试驱动信号，在电路的点处监视电路的性能。

4. 发明授权

US06879827B2 Testing a communication network with a shared test port 失效
标题翻译：使用共享测试端口测试通信网络
公开(公告)号：US06879827B2
公开(公告)日：2005-04-12
申请号：US10345768
申请日：2003-01-16
申请人： Douglas L. Richards , Gregory A. Wolfe , Kevin H. Hansen
发明人： Douglas L. Richards , Gregory A. Wolfe , Kevin H. Hansen
IPC分类号： H04L12/26 , H04Q7/20 , H04B17/00
CPC分类号： H04L43/50
摘要： A system for testing a communication network includes a test system and a cross-connect system. The test system generates a plurality of independent low data rate test signals with first data rates. The test system combines the independent low data rate test signals to generate a high data rate test signal. The test system then transmits the high data rate test signal from the test system to a shared test port. The cross-connect system transfers the high data rate test signal to a cross-connect matrix that connects the independent low data rate test signals to the communication network. The cross-connect system then receives the independent low data rate test signals from the communication network into the shared test port. The cross-connect system transmits the high data rate test signal from the shared test port to the test system. The test system separates the high data rate test signal into the independent low data rate test signals. The test system then independently tests the independent low data rate test signals as separate test sessions.
摘要翻译：用于测试通信网络的系统包括测试系统和交叉连接系统。测试系统产生具有第一数据速率的多个独立的低数据速率测试信号。测试系统结合了独立的低数据速率测试信号，以产生高数据速率测试信号。测试系统然后将高数据速率测试信号从测试系统传输到共享测试端口。交叉连接系统将高数据速率测试信号传输到将独立的低数据速率测试信号连接到通信网络的交叉连接矩阵。交叉连接系统然后从通信网络接收独立的低数据速率测试信号到共享测试端口。交叉连接系统将高数据速率测试信号从共享测试端口发送到测试系统。测试系统将高数据速率测试信号分离成独立的低数据速率测试信号。然后，测试系统独立地测试独立的低数据速率测试信号作为单独的测试会话。

5. 发明授权

US06778778B1 Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM) 失效
标题翻译：通过密集波分复用（DWDM）测试光纤电信电路的布置和方法
公开(公告)号：US06778778B1
公开(公告)日：2004-08-17
申请号：US09758496
申请日：2001-01-11
申请人： Douglas L. Richards , David W. Williams , Francis R. Yarkosky
发明人： Douglas L. Richards , David W. Williams , Francis R. Yarkosky
IPC分类号： H04B1008
CPC分类号： H04B10/0793
摘要： An arrangement and a method for testing a telecommunications circuit over Dense Wavelength Division Multiplexing (DWDM). A transmitter, which is optically coupled to the circuit, transmits a test-drive signal on the circuit. Through a network, a performance of the circuit is monitored at points along the circuit based on the transmitted test-drive signal.
摘要翻译：用于通过密集波分复用（DWDM）测试电信电路的布置和方法。光耦合到电路的发射器在电路上传输测试驱动信号。通过网络，基于发送的测试驱动信号，在电路的点处监视电路的性能。

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