Abstract
An optically-resonant periodic electrode (ORPEL) structure consists of a subwavelength, interdigitated metal electrode grating on top of a silicon-on-insulator substrate. The grating is covered with a thin amorphous silicon layer for protection and extra design flexibility. Light incident on the structure can couple into the crystalline silicon waveguide layer via the metal grating if its wavelength and angle of incidence satisfy the grating diffraction equation:
© 2003 Optical Society of America
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