TY - GEN
T1 - Orbital Angular Momentum Generation Using Composite Quasi-Continuous Metasurfaces with Perfect Efficiency
AU - Chen, Menglin L.N.
AU - Jiang, Li Jun
N1 - Funding Information:
We thank Dr. Wei E. I. Sha for fruitful discussions. This work was supported in part by the Research Grants Council of Hong Kong (GRF 17210815), NSFC 61271158, Hong Kong UGC AoE/P-04/08, AOARD FA2386-17-1-0010, and HKU Seed Fund 201711159228.
Publisher Copyright:
© 2018 The Institute of Electronics, Information and Communication Engineers (IEICE).
PY - 2018/12/31
Y1 - 2018/12/31
N2 - A composite perfect electric conductor (PEC)-perfect magnetic conductor (PMC) metasurface is proposed for orbital angular momentum (OAM) generation. Each scatterer on the metasurface consists of an anisotropic PEC layer and an isotropic PMC layer. Unlike conventional metasurfaces that composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. Therefore, negative consequences of periodicity breaking from the patterned scatterers with varying sizes or orientations and their mutual coupling are avoided. We model the scatterer using Jones matrix. Its design is based on the features of PEC and PMC, which abandons complicated optimization process. The patterning of scatterers on the metasurface is determined by a grating function. The designed metasurface reflects the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to a RCP/LCP vortex beam carrying OAM, with nearly 100% efficiency.
AB - A composite perfect electric conductor (PEC)-perfect magnetic conductor (PMC) metasurface is proposed for orbital angular momentum (OAM) generation. Each scatterer on the metasurface consists of an anisotropic PEC layer and an isotropic PMC layer. Unlike conventional metasurfaces that composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. Therefore, negative consequences of periodicity breaking from the patterned scatterers with varying sizes or orientations and their mutual coupling are avoided. We model the scatterer using Jones matrix. Its design is based on the features of PEC and PMC, which abandons complicated optimization process. The patterning of scatterers on the metasurface is determined by a grating function. The designed metasurface reflects the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to a RCP/LCP vortex beam carrying OAM, with nearly 100% efficiency.
UR - http://www.scopus.com/inward/record.url?scp=85060943953&partnerID=8YFLogxK
U2 - 10.23919/PIERS.2018.8598158
DO - 10.23919/PIERS.2018.8598158
M3 - Conference article published in proceeding or book
AN - SCOPUS:85060943953
T3 - Progress in Electromagnetics Research Symposium
SP - 575
EP - 579
BT - 2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018
Y2 - 1 August 2018 through 4 August 2018
ER -