Correlation Processing of the Signals of the Single-Fiber Intermode Interferometer with a Small Number of Excited Modes
Possibilities of obtaining quantitative information about the deformation influence on the SFMI with a small number of excited modes by using a correlation method are investigated. It was shown that usage of diffusive scatterer allows us to transform the radiation of SFMI to a speckle field which can easily be processed. The working range of the SFMI deformation measurements is 0 – 160 µm with precision up to 10 µm.
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
Y. Kulchin et al., "Correlation Processing of the Signals of the Single-Fiber Intermode Interferometer with a Small Number of Excited Modes", Key Engineering Materials, Vols. 381-382, pp. 627-630, 2008