Wide Frequency Range Controllable Wave Transmission in Waveguide with Variable Lateral Periodic Profile

The investigation reveals a new mechanism for controlling wave transmission in the periodic waveguide. Measurements show that location of the gap in the spectrum and its width depend on the relative position of two corrugated walls. The transmission varies from zero to a maximum value upon shifting of one periodic wall with respect to another on the half period of corrugation. The location of the gap moves from 7.7 to 10 GHz. The experimental and theoretical results demonstrate that the periodic structure with the variable periodic profile can be used to control wave transmission in different optical and microwave devices