| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device and method, for optical networks, determining the condition of each of optical networks in particular in the optical networks. <P>SOLUTION: A front end of each branch of an optical network is installed with an optical filter that filters an optical signal with a different wavelength. Optical signals of different wavelengths enter each of the branches in sequence for analysis, so that the condition of each branch on the optical network is determined. This solves the problem of interference among the branches when monitoring the optical fiber condition on an optical network. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
