The condition and concept of confocality for ring resonators are considered. The advantages and limitations of such a design and its prospects for application in passive optical gyros are considered. It is also shown that earlier proposed scheme with toroidal reflecting surfaces can be substituted by the ring cavity with the internal axially symmetrical lens (GRIN-lens).
The paper is devoted to the analysis and review of optical resonance gyroscopes on low-coherence radiation sources. The main advantages of using low-coherence radiation sources in optical resonance gyroscopes are considered. The circuit design options for their implementation developed to date, their operating principle, achieved characteristics, common problems of such gyroscopes and methods for solving them are analyzed.
This article describes an experimental study of the optical vortex generation with the use of light that was reflected from the combination of two cube-corner reflectors (retroreflectors) and its analysis in far field. The main goal of our research was to confirm the theoretical data from the article. Shearing interferometer was used for optical vortex detection and analysis. Our previous studies were focused on cases with linear polarization forming a polarization vortex. This time we were using light circular polarization to produce an optical vortex with m=2.
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