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JINHAI HUANG1, BO WANG1,* , XU YANG1, LINJIAN HUANG1, WEIYI YU1, JIAHAO LI1, XIAOFENG WANG1, HONG ZOU1, LIQUN LIU1, GUODING CHEN1, QU WANG1, LIANG LEI1, LI LUO1
The four-port reflection splitter with 0th order suppressed is proposed. HfO2 was chosen as the material for the grating ridges, achieving a highly-efficient splitting effect. Under normal incidence at 1550 nm wavelength, efficiencies of ±1 and ±2 orders under TE polarization are 24.45% and 24.56%, respectively, which are 24.10% and 24.08% under TM polarization, respectively. The 0th order of both polarizations is less than 1%. The structure was studied using rigorous coupled-wave analysis and simulated annealing algorithm. In addition, the electric field map of the energy distribution inside the grating during diffraction was depicted by the finite element method.
Four-port splitter, Under normal incidence, Polarization independence.
JINHAI HUANG, BO WANG, XU YANG, LINJIAN HUANG, WEIYI YU, JIAHAO LI, XIAOFENG WANG, HONG ZOU, LIQUN LIU, GUODING CHEN, QU WANG, LIANG LEI, LI LUO, Distribution features of four-port by reflective covered grating, Optoelectronics and Advanced Materials - Rapid Communications, 17, 9-10, September-October 2023, pp.357-363 (2023).
Submitted at: May 4, 2023
Accepted at: Oct. 9, 2023
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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