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JINHAI HUANG1, BO WANG1,* , WEIYI YU1, JIAHAO LI1, XIAOFENG WANG1, HONG ZOU1, LIQUN LIU1, LINJIAN HUANG1, XU YANG1, GUODING CHEN1, QU WANG1, LI LUO1, LIANG LEI1
In this paper, a transmission four-port grating beam splitter with 0th order rejection is proposed. Under normal incident conditions, the grating parameters were optimized using rigorous coupled wave analysis and simulated annealing algorithm, and the diffraction efficiency of the optimized grating is 24.24% and 24.34% for the ±1st and ±2nd orders under transverse electric polarization, respectively, and 24.16% and 23.21% for the ±1st and ±2nd orders under transverse magnetic polarization. In addition, the electric field distribution of the grating was analyzed using the finite element method, and the diffraction phenomenon of the grating was analyzed using the simplified modal method. Most importantly, the grating has good polarization-independent spectral performance. The data show that the grating structure has high processing tolerance and is advantageous in the field of beam splitters.
Four-port, Beam splitter, Transmission grating, Under normal incidence.
JINHAI HUANG, BO WANG, WEIYI YU, JIAHAO LI, XIAOFENG WANG, HONG ZOU, LIQUN LIU, LINJIAN HUANG, XU YANG, GUODING CHEN, QU WANG, LI LUO, LIANG LEI, New control scheme for four-port grating beam splitter with HfO2 layer, Optoelectronics and Advanced Materials - Rapid Communications, 17, 7-8, July-August 2023, pp.257-264 (2023).
Submitted at: Jan. 21, 2023
Accepted at: Aug. 7, 2023
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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