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Proceedings Paper

The numerical calculation and analysis for designing a polarization beam splitter based on a rectangular phase grating
Author(s): Hua Gao; Peng Dong; Zhiyuan Zheng; Jing Zhou
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Paper Abstract

A new method based on the combination of Finite-Difference Time-Domain (FDTD) algorithm and Fourier transform was proposed to analyze the Fraunhofer vector diffraction of gratings in this paper. The interaction of a grating with the incident linearly polarized light was simulated using FDTD algorithm, the complex amplitude distribution on the rear plane of the grating was extracted, and then the Fraunhofer diffraction pattern was obtained by performing Fourier transform of the complex amplitude. It was found that for the rectangular phase grating if the period of the grating is comparable to the wavelength of the incident wave, the propagation speeds of the TE and TM waves in the dielectric of the grating are different, which makes the diffraction of the grating is polarization dependent. Besides, the relative phase retardations of TE and TM waves formed on the rear plane of the grating are different and both of them can be controlled by changing the thickness of the grating, which makes it be realized that the intensities of TE and TM waves concentrate onto the 0th order and 1st order separately by selecting a suitable grating thickness. Therefore a polarization beam splitter based on a rectangular dielectric grating can be easily designed.

Paper Details

Date Published: 28 November 2011
PDF: 10 pages
Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 82020E (28 November 2011); doi: 10.1117/12.917484
Show Author Affiliations
Hua Gao, China Univ. of Geosciences (China)
Peng Dong, China Univ. of Petroleum (China)
Zhiyuan Zheng, China Univ. of Geosciences (China)
Jing Zhou, Beijing Normal Univ. (China)


Published in SPIE Proceedings Vol. 8202:
2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology
Hoi Sing Kwok; Fengzhou Fang; Lian Xiang Yang; Chongxiu Yu; Albert A. Weckenmann; Yanbing Hou; Jinxue Wang; Ji Zhao; Jinxue Wang; Peter Zeppenfeld; Boyu Ding; Boyu Ding; Liquan Dong; Liquan Dong; Jack K. Luo; Boyu Ding; Liquan Dong; Jinxue Wang, Editor(s)

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