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1. 发明授权

US06697574B2 Multiple input waveguide grating router for broadcast and multicast services 失效
标题翻译：用于广播和多播服务的多输入波导光栅路由器
公开(公告)号：US06697574B2
公开(公告)日：2004-02-24
申请号：US09822821
申请日：2001-04-02
申请人： Nicholas J. Frigo , Patrick P Iannone , Cedric F. Lam , Kenneth C Reichmann
发明人： Nicholas J. Frigo , Patrick P Iannone , Cedric F. Lam , Kenneth C Reichmann
IPC分类号： H04J1400
CPC分类号： H04Q11/0005 , H04J14/02 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0047 , H04Q2011/0049
摘要： An optical telecommunications network suitable for carrying broadcast and switched services. The network includes a wavelength division multiplexing (WDM) coupled to a waveguide grating router (WGR). In accordance with the invention, an adjacent input port is connected with the same optical content. Thus, its outputs are adjacent (or wrapped around). According, the optical power in each of the broadcast bands at the outputs remains the same but is reduced by a factor of two in power for each channel but occupying twice as many channels. This has the effect of increasing the SNR by a factor of two.
摘要翻译：适用于承载广播和交换业务的光通信网络。网络包括耦合到波导光栅路由器（WGR）的波分复用（WDM）。根据本发明，相邻的输入端口与相同的光学内容连接。因此，其输出是相邻的（或缠绕的）。据说，输出中每个广播频带的光功率保持不变，但每个频道的功率减少了2倍，但占用的频道数量是两倍。这具有将SNR增加一倍的效果。

2. 发明授权

US07042559B1 Fault location apparatus and procedures in CWDM business applications using wavelength selective OTDR 有权
标题翻译：使用波长选择性OTDR的CWDM业务应用中的故障定位设备和程序
公开(公告)号：US07042559B1
公开(公告)日：2006-05-09
申请号：US10610720
申请日：2003-07-01
申请人： Nicholas J. Frigo , Patrick P Iannone , Kenneth C Reichmann
发明人： Nicholas J. Frigo , Patrick P Iannone , Kenneth C Reichmann
IPC分类号： G01N21/00
CPC分类号： G01M11/3136 , G01M11/3127
摘要： A method for verifying fiber connections and diagnosing loss of light or loss of signal conditions in a WDM optical system. The method utilizes an optical time domain reflectometer (OTDR) having user-selectable wavelengths to shoot OTDR traces at a specified wavelength corresponding to an optical data-bearing channel into a selected one of a plurality of optical fiber transmission lines that are connected to a multiplexer that respectively multiplexes a data bearing channel carried on each of the plurality of optical fiber transmission lines onto a trunk, or a demultiplexer that demultiplexes multiplexed data bearing channels from the trunk. The OTDR receives backscattered light from the selected optical fiber transmission line and generates a trace of the backscattered light, thereby enabling a fault location in the WDM optical system to be determined from the trace.
摘要翻译：一种在WDM光学系统中验证光纤连接并诊断光损失或信号状况损失的方法。该方法利用具有用户可选择波长的光时域反射计（OTDR），以对应于光学数据承载通道的指定波长将OTDR迹线拍摄到连接到多路复用器的多条光纤传输线中的选定一条光纤分别将多个光纤传输线路中承载的数据承载信道分别复用到中继线上，或者从多路复用多路复用数据承载信道的解复用器。 OTDR从所选择的光纤传输线接收反向散射光，并产生后向散射光的轨迹，从而可以从迹线确定WDM光学系统中的故障定位。

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