公开(公告)号：US06370294B1

公开(公告)日：2002-04-09

申请号：US09344224

申请日：1999-06-25

申请人： Greg C. Pfeiffer ,  Todd P. Knettel ,  Michael Nystrom ,  Jorge A. Cano

发明人： Greg C. Pfeiffer ,  Todd P. Knettel ,  Michael Nystrom ,  Jorge A. Cano

IPC分类号： G02B626

CPC分类号： H04B10/075 ,  G02B6/4453 ,  H04Q11/0003

摘要： A fiber optic circuit provides signal access and monitoring. A module housing the circuit and the module is mountable to a chassis. The module housing includes mounting flanges for mounting the module to the chassis; and a plurality of exposed adapters along at least one of the front and rear faces. Each of the plurality of adapters is connectable to a fiber optic connector external to the module. The plurality of adapters define first and second transmit signal ports and first and second receive signal ports. A transmit signal pathway is between the first and second transmit signal port. A receive signal pathway is between the first and second receive signal ports. A first switch, such as a 2×2 switch, is between the transmit and receive signal pathways wherein the switch has first and second states, the first state being a normal through state wherein the first and second transmit signal ports are in communication along the transmit signal pathway, and wherein the first and second receive signal ports are in communications along the receive signal pathway, and a loopback state wherein the first transmit signal and the receive signal port are in communication along a first loopback path along a portion of the transmit and receive signal pathways, and wherein the second transmit and receive signal ports are in communication along a loopback path along other portions of the transmit and receive signal pathways. A second 2×2 switch or a 1×2 switch allows access for testing with test equipment and a 1×N optical switch. The various switches can be remotely controlled.

摘要翻译： 光纤电路提供信号访问和监控。 容纳电路和模块的模块可安装到机箱。 模块壳体包括用于将模块安装到底盘的安装凸缘; 以及沿着前表面和后表面中的至少一个的多个暴露的适配器。 多个适配器中的每一个可连接到模块外部的光纤连接器。 多个适配器限定第一和第二发射信号端口以及第一和第二接收信号端口。 发射信号路径位于第一和第二发射信号端口之间。 接收信号路径在第一和第二接收信号端口之间。 诸如2x2开关的第一开关位于发射和接收信号通路之间，其中开关具有第一和第二状态，第一状态是正常通过状态，其中第一和第二发射信号端口沿着发射信号通信 并且其中所述第一和第二接收信号端口沿着所述接收信号路径进行通信，以及环回状态，其中所述第一发射信号和所述接收信号端口沿着所述发射和接收的一部分沿着第一环回路径通信 信号路径，并且其中第二发射和接收信号端口沿着沿着发射和接收信号路径的其他部分的环回路径进行通信。 第二个2x2开关或1x2开关允许使用测试设备和1xN光学开关进行测试。 各种开关可以远程控制。