The need to study the temperature dependence of phase difference between optical signals in information transmission channels for direction finder stations is justified. The method is proposed how to determine the phase difference. The experimental results are presented for different cases of temperature change influence on optoelectronic path of direction finder.
In the article the influence of optical fiber temperature change to phase shift between optical signals in transmission channels is considered. The method for influence assessment of temperature phase shift on bearing accuracy is proposed. The results of experimental researchers and calculations are presented.
The features of nucleation, start, and propagation of a crack inside a transparent organic sample are investigated. The distribution of the refractive index and density around the crack was studied by changing of speckle images and ellipsometry method. It was found that the maximum value of the relative change in density is near the crack. This value before the crack start is greater than 0.003. It is proved that the speckle method we offer can be the basis for the creation of various techniques. Using these techniques will allow us to estimate the time before the crack start by the rate of change of physical quantities in small areas of the order of 50 μm and their limiting values. The results of experimental investigations are presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.