Polarization-selective beam splitter by a sandwiched grating

• Autorzy: Wang B , Chen L , Lei L , Zhou J
• Języki publikacji: EN

Abstrakty

EN

We describe a polarization-selective beam splitter by a sandwiched grating, which can fulfill the high efficiency element for TE polarization and the two-port output for TM polarization. The modal method and the rigorous coupled-wave analysis (RCWA) are employed together to optimize the polarization-selective beam splitter. According to the modal method, the grating duty cycle and period are discussed to analyze the physical mechanism of such a dual-function element. Using RCWA, grating depth and thickness of the covering layer are accurately optimized to design such a polarization-selective beam splitter. With the optimized grating duty cycle, period, depth and covering layer thickness, TE polarization can be mainly diffracted in the –1st order and two-port output can be achieved for TM polarization in the 0th and the –1st orders. The polarization-selective beam splitter should be a useful element in a variety of applications with advantages of high efficiency, wideband property, and dual functions based on a sandwich grating.

Słowa kluczowe

EN

modal method; rigorous coupled-wave analysis (RCWA); sandwiched grating; high efficiency; beam splitter

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2013
• Tom: Vol. 43, nr 2
• Strony: s. 229--236
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr.

Twórcy

autor

Wang B

• School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China

autor

Chen L

autor

Lei L

autor

Zhou J

Bibliografia

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