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A novel optical beam splitter based on photonic crystal with hybrid lattices |
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| Authors: | Zhu Qing-Yi Fu Yong-Qi Hu De-Qing Zhang Zhi-Min |
| Affiliation: | a. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;b. Department of Electronic Engineering, Sichuan Information Technology College, Guangyuan 628017, China |
| Abstract: | A novel optical beam splitter constructed on the basis of photonic crystal (PC) with hybrid lattices is proposed in this paper. The band gap of square-lattice PC is so designed that the incident light is divided into several branch beams. Triangular-lattice graded-index PCs are combined for focusing each branch. Computational calculations are carried out on the basis of finite-different time-domain algorithm to prove the feasibility of our design. The waveguide is unnecessary in the design. Thus the device has functions of both splitting and focusing beams. Size of the divided beam at site of full-width at half-maximum is of the order of λ/2. The designed splitter has the advantages that it has a small volume and can be integrated by conventional semiconductor manufacturing process. |
| Keywords: | optical beam splitter photonic crystals hybrid lattices finite-different time-domain method |
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