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Optimal design of sub-wavelength metal rectangular gratings for polarizing beam splitter based on effective medium theory 被引量:3

Optimal design of sub-wavelength metal rectangular gratings for polarizing beam splitter based on effective medium theory
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摘要 A novel optimal design of sub-wavelength metal rectangular gratings for the polarizing beam splitter (PBS) is proposed. The method is based on effective medium theory and the method of designing single layer antireflection coating. The polarization performance of PBS is discussed by rigorous couple-wave analysis (RCWA) method at a wavelength of 1550 nm. The result shows that sub-wavelength metal rectangular grating is characterized by a high reflectivity, like metal films for TE polarization, and high transmissivity, like dielectric films for TM polarization. The optimal design accords well with the results simulated by RCWA method. A novel optimal design of sub-wavelength metal rectangular gratings for the polarizing beam splitter (PBS) is proposed. The method is based on effective medium theory and the method of designing single layer antireflection coating. The polarization performance of PBS is discussed by rigorous couple-wave analysis (RCWA) method at a wavelength of 1550 nm. The result shows that sub-wavelength metal rectangular grating is characterized by a high reflectivity, like metal films for TE polarization, and high transmissivity, like dielectric films for TM polarization. The optimal design accords well with the results simulated by RCWA method.
出处 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第12期5326-5330,共5页 中国物理B(英文版)
基金 Project supported by Science Foundation of the Chongqing Committee of Education,China (Grant No KJ071205)
关键词 polarizing beam splitter sub-wavelength metal rectangular gratings effective medium theory ANTIREFLECTION polarizing beam splitter, sub-wavelength metal rectangular gratings, effective medium theory, antireflection
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