WDM Network for Multipoint Analysis of Scattered Laser Radiation

Abstract

The multichannel WDM technique was the inspiration of the concept to measure vibration parameters from many points of a vibrating object (cars, planes, household equipment). The N-independent WDM/ITU separated 15XX nm fibre coupled laser diodes form coherent source system for multipoint measurement of vibrations according to the rule one wavelength- one point. The scattered light from the object coupled into fibre, filtered coherently, after special signal processing, allows analysing amplitudes and phases of many vibrating points in real time. Some primary experiments will be demonstrated