Abstract

In this paper, a leaky-mode directional coupler based on grating-assisted coupling between a semiconductor subwaveguide and a polymer subwaveguide is experimentally demonstrated at wavelengths near 1310 nm. The grating is fabricated at the interface between the semiconductor and polymer materials. The grating period satisfies the phase-matching condition for power exchange between the two nonsynchronous subwaveguides. Experimental and theoretical results show coupling from the semiconductor subwaveguide to the polymer subwaveguide as a function of excitation wavelength.

© 2009 IEEE

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