Scattering, trapped modes and guided waves in waveguides and diffraction gratings

摘要

We suggest the numerical approach to detect eigenfrequencies of trapped modesin waveguides or guided waves in diffraction gratings. At the same time, theapproach works perfectly for computation of systems with finitely manyscattering channels. The most attractive example concerns the possibility ofcontrol on electron transport in nano-dimensions system consisting of aresonator and finitely many adjoined channels due to external variable electricfield.