Patent ID: 7206478
Filing Date: 2007-04-17
Classification: G02B,H04B

Abstract:
1. An apparatus for monitoring optical network, adapted for monitoring at least one optical network being coupled, comprising: multiple fiber gratings, coupled to the optical network and having a specific central wavelength; at least one reflection unit; and at least one optical gain medium unit, coupled between the fiber gratings and the reflection unit for generating at least one optical signal, wherein the optical signal transmits to and from between the fiber gratings and the reflection unit, and the optical gain medium unit amplifies the optical signal and a different one of the at least one reflection unit corresponds a different one of a frequency spectrum, which is used for monitoring the optical network, wherein each of the fiber gratings has a specific central wavelength different from each other, and the frequency spectrum of the optical signal is monitored to simultaneously observe whether or not each of multiple resonant peaks corresponding to the specific central wavelengths occurs, so as to determine which one of the connected optical networks is unqualified.