Abstract

An optical power splitter with one input and three output ports is proposed and demonstrated for near infrared applications in the wavelength range from 2.3 to 2.5 microns. The device operates on the principle of directional coupling by introducing photonic crystal line-defect waveguides. Its functionality and performance have been numerically investigated and simulated by finite-difference time-domain method. Required optical power from each of the output waveguide can be easily controlled by adjusting the coupling length of interaction for photonic crystal line-defect waveguides. The total length of the 1*3 power splitter is 30 microns, which is significantly less than conventional non-photonic crystal power splitter. This is a promising device for future ultracompact and large-scale nanophotonic integrated circuits.

© 2005 Chinese Optics Letters

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