Properties of diamond‐like carbon nano‐coating deposited with RF PECVD method on UV‐induced long‐period fibre gratings
Bibliographic record
Abstract
The paper discusses the properties of diamond‐like carbon (DLC) thin overlays deposited with radio frequency plasma‐enhanced chemical vapour deposition (RF PECVD) method on optical fibres with long‐period fibre gratings (LPFGs) induced by UV irradiation. In consequence of low deposition temperature, the UV‐induced LPFGs can be coated with DLC without damaging the thermally‐instable grating structure. We have found that properties of the DLC overlays highly depend on a distance between the LPFG and electrode in the deposition chamber. Moreover, the response of the LPFG to variation in external refractive index (RI) can be tuned by deposition of DLC nano‐overlay. For the investigated DLC‐coated LPFGs we obtained sensitivity reaching over 3000 nm per RI unit in the range of nD = 1.33 to 1.37 RIU, which is almost 12 fold higher than for the LPFGs with no overlay in the same RI range.
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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) | 0.001 | 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".