Abstract

In this paper, we propose an in-plane beam splitter for self-collimated beams in a two-dimensional photonic crystal. An optical filter inserted on the propagation path of the input self-collimated beam divides this beam into two parallel equi-power self-collimated beams. The optical filter has a multistage configuration designed using well-known techniques. The proposed beam splitter has a compact configuration appropriate for integrated optics. Design procedure and the numerical results obtained using the finite-difference time-domain method, as well as a method for extraction of the $S$ parameters of the beam splitter, are presented.

© 2013 Optical Society of America

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