Acta Optica Sinica, Volume. 33, Issue 4, 423002(2013)
Novel 1×3 Splitter Based on Photonic Crystal Self-Collimation Effect
A 1×3 splitter based on self-collimation in a two-dimensional square-lattice photonic crystal is presented. The frequency and the direction of propagation of the self-collimated beams in square-lattice photonic crystal composed of elliptical dielectric rods are obtained by the equal-frequency contours (EFC) which are calculated by plane-wave expansion (PWE) method. Then the elliptical rods are rotated counterclockwise and the EFC is caculated employing PWE method. Based on the above, a 1×3 splitter is realized by photonic crystals composed of elliptical rods with different orientation angles. The transmission characteristics of light in the splitter are analyzed via the finite-difference time-domain (FDTD) method, and the resulting electric fields are also given. It is concluded from the electric fields that a 1×3 beam splitter is realized. The proposed splitter is expected to promote the application of photonic crystals in optical integrated circuits.
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Zhou Xingping, Shu Jing. Novel 1×3 Splitter Based on Photonic Crystal Self-Collimation Effect[J]. Acta Optica Sinica, 2013, 33(4): 423002
Category: Optical Devices
Received: Nov. 28, 2012
Accepted: --
Published Online: Mar. 5, 2013
The Author Email: Xingping Zhou (zhou846775223@sina.com)