Improving the mode profile circularity of microstructured optical fibers by using an Archimedean-like cladding structure
Bibliographic record
Abstract
We present a novel microstructured optical fiber (MOF) structure which consists of a 7-missing-holes core surrounded by a cladding formed by an Archimedean-like lattice of air holes, as opposed to the standard MOF cladding structure consisting of a triangular lattice. We demonstrate that this new cladding geometry can be achieved through the standard stack-and-draw MOF fabrication method, the main difference being the fact that the circular capillaries commonly used in conventional MOF are replaced by hexagonal canes comprising 7 air holes disposed in a centred hexagon (forming the so-called A7 unit cells). The Archimedean-like lattice MOF (ALMOF) is particularly interesting by the fact that it features a dodecagonal core, which is a shape much closer to a perfect circle than the hexagonally-shaped core characteristic of the conventional 7-missing-holes triangular-lattice MOF. As a result, we show that the improved core circularity of the ALMOF design leads to a significantly more circular fundamental mode profile, which can prove to be quite interesting for specific applications where the circularity of the mode profile is critical, such as precision laser micromachining for example.
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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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".