Anisotropic Bilayer Transmissive Huygens Metasurface for Generating Multi-OAM Beams With Orthogonal Modes and Polarizations
Bibliographic record
Abstract
This letter proposes a bilayer transmissive Huygens metasurface with an independent phase response for two orthogonal polarizations to generate two distinct modes of orbital angular momentum (OAM) beams. The performance of the proposed unit cell is comprehensively investigated, and its efficiency in the near field is verified through an analytical approach. Then, the necessary theories for realizing converged OAM beams by merging the lens and OAM phase distributions are inclusively elaborated. Moreover, a dual-polarized quad-ridged open-ended waveguide antenna is designed to illuminate the metasurface. Ultimately, two scenarios are explored through the designed surface. The first strategy generates the second ($l_{x}=2$) and third ($l_{y}=3$) modes of the OAM beams in thex- andy-polarizations, respectively, while the second strategy produces modes$l_{x}=0$and$l_{y}=2$in two orthogonal polarizations. It appears that the suggested configuration managed to obtain a respectable level of agreement between simulation and measurement results.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".