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4. 10. 2011.
Usage of Optical Power Meter in Passive Optical Networks
Abstract The aim of this study is to investigate the use of an optical power meter in the field of passive optical networks. This instrument can provide certain spatial information about the fault at the physical layer in a passive optical network with cascade architecture, which is not possible in other optical networks. Attenuation of the optical path from the single optical network unit to the central office can be obtained by inserting a splitter 2/1 and measuring a difference in optical powers in the “on” and “off” states of this unit. The presented test results show the accuracy of measurement better than 2.5%.