Abstract
Spin-multiplexed metasurfaces have emerged as a transformative technology in satellite communications, offering unprecedented potential for expanding information capacity. Despite their promise, conventional implementations employing interleaved and multi-layer stacking architectures are fundamentally limited by inherent efficiency constraints and significant crosstalk interference. This study presents a novel paradigm in spin-selective chiral metasurface design that enables fully independent phase modulation of transmitted and reflected waves while maintaining exceptional isolation between channels. This innovative approach yields a remarkable 97% operation efficiency with an exceptional circular dichroism (CD) of 0.93 across 10–12.2 GHz, corresponding to a 19.8% relative bandwidth, as demonstrated by numerical simulation and experimental validation. The proposed crosstalk-free spin-multiplexed metasurface architecture achieves high-efficiency wavefront manipulation exclusively through geometric phase rotation, eliminating the need for complex multi-layer structures. This advancement represents a significant leap forward in the development of next-generation high-capacity communication systems utilizing circular polarization multiplexing.
| Original language | English |
|---|---|
| Article number | 2501041 |
| Journal | Advanced Optical Materials |
| Volume | 14 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 6 Mar 2026 |
| Externally published | Yes |
Keywords
- chiral metasurfaces
- full space
- geometric phase
- spin-multiplexed
- vortex wave
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