OF PERIODIC CORRUGATED DIELECTRIC WAYEGUIDES

ABSTRACT Ill this experimental study we investigate the guided mode-radiation mode coupling ofperiodic dielectric waveguides. The dispersion relation and the attenuation constant along the dielectric waveguide were measured around the second Bragg frequency. The far field radiation pattern was also measured. Floquet theorem was applied to solve wave equations. Zero orderapproximation was used in the design of waveguides. For surface emitting structures used insurface emitting lasers and couplers, the most important parameter is the dispersion relationand attenuation constant along the corrugated waveguide around the second Bragg frequency.The dispersion and attenuation measurement shows that the attenuation constant minimumoccurs at the second Bragg frequency. This corresponds to the maximum Q point of the corru-gated waveguide. Two side incidence shows that in the out of phase condition the radiation power is minimum at the second Bragg frequency and have two lobes. 1. INTRODUCTIONInt€grated circuit technology played a significant role in the fabrication of optical