OPTICAL SHUTTER BASED ON SUB-WAVELENGTH GRATINGS ACTUATED BY MICROELECTROMECHANICAL SYSTEMS

摘要

Methods and systems for control of electromagnetic waves are disclosed. An optical shutter includes a sub-wavelength grating. Each beam of the grating can be controlled by electrostatic or mechanical forces in order to increase or decrease the gap between each beam. Electrostatic or acoustic control of the grating allows an optical shutter to switch on and off.