Guided-mode resonances in multimode planar periodic waveguides |
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| Authors: | Tianyu Sun Yunxia Jin Ji a Shao Zhengxiu Fan |
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| Affiliation: | Tianyu Sun Yunxia Jin Jianda Shao and Zhengxiu Fan 1 Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Using the effective medium theory and the waveguide eigenvalue equation,we design a multimode planar periodic waveguide.When a plane wave illuminates the grating at the designed angle and wavelength, more than one leaky modes are excited coincidentally.Then the reflection efficiency around this designed angle and wavelength is investigated using a rigorous coupled wave analysis formulation and a gap of reflection peaks is found.Electric field distributions reveal that this high reflectivity gap is due to th... |
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