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ZEFAN LIN1, BO WANG1,* , CHENHAO GAO1, KUNHUA WEN1, ZIMING MENG1, ZHAOGANG NIE1, FANGTENG ZHANG1, XIANGJUN XING1, LI CHEN1, LIANG LEI1, JINYUN ZHOU1
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
In this paper, a polarization-independent grating with the suppression of the zeroth order under normal incidence is introduced. In order to suppress the zeroth order, the rigorous coupled-wave method is used to optimize height of the grating groove and the thickness of the connecting layer, where the total efficiency of the +1st order and the -1st order is greater than 90%. The modal method can explain the physical mechanism of the grating transmission and the 0th order suppression. Then the process tolerance of the grating is studied, which provides a basis for the design of the zeroth order suppressed..
Polarization-independent grating, Beam splitter, Suppression of the zeroth order.
Submitted at: Sept. 1, 2019
Accepted at: Feb. 15, 2021
ZEFAN LIN, BO WANG, CHENHAO GAO, KUNHUA WEN, ZIMING MENG, ZHAOGANG NIE, FANGTENG ZHANG, XIANGJUN XING, LI CHEN, LIANG LEI, JINYUN ZHOU, Polarization-independent grating with the zeroth order suppressed, Journal of Optoelectronics and Advanced Materials Vol. 23, Iss. 1-2, pp. 1-5 (2021)
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