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Study of transmission properties for waveguide bends by use of a circular photonic crystal |
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| Authors: | Sanshui Xiao Min Qiu |
| Institution: | aLaboratory of Optics, Photonics and Quantum Electronics, Department of Microelectronics and Information Technology, Royal Institute of Technology (KTH), Electrum 229, 16440 Kista, Sweden bDepartment of Optical Engineering, Zhejiang University, Yu-Quan 310027, China |
| Abstract: | We study the transmission properties for the waveguide bends composed by a circular photonic crystal. Two types (Y and U type) of the waveguide bends utilizing the circular photonic crystal are studied. It has been shown, compared with the conventional photonic crystal waveguide bends, transmission properties for these bends can be significantly improved. Over a 6.4% bandwidth, less than 1-dB loss/bend are observed. U bent waveguide, i.e., 180° bend, can be easily realized with low loss using the circular photonic crystal. |
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