Wide-angle beam splitting by use of positive-negative refraction in photonic crystals |
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Authors: | Luo Ye Zhang Wei Huang Yidong Zhao Jianhui Peng Jiangde |
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Institution: | Department of Electronic Engineering, Tsinghua University, Beijing 100084, China. xiut97@mails.tsinghua.edu.cn |
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Abstract: | We present a positive-negative refraction effect in which, under certain conditions, an incident plane wave launched into a photonic crystal excites a positive-refracted Bloch wave and a negative-refracted Bloch wave simultaneously, both of which maintain the polarization. By utilizing this phenomenon, wide-angle beam splitting can be realized at the microscale level. Numerical simulations are employed to demonstrate this anomalous refraction behavior. |
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