Broadband all-fiber mid-infrared supercontinuum generation in an As<sub>2</sub>S<sub>3</sub>-polycarbonate hybrid microtaper
Bibliographic record
Abstract
Abstract We present a coherent supercontinuum (SC) spanning a 1.1–3.9 µ m wavelength range from propagation in a three-stage cascade of nonlinear and dispersive fibers, including a silica fiber, a ZBLAN fiber, and a robust and dispersion-engineered As 2 S 3 microtaper. In the first stage made of silica fiber, a pump pulse undergoes soliton fission, creating a fundamental soliton that subsequently redshifts through soliton self-frequency shift (SSFS) to a center wavelength of 2.14 μ m. In the second stage made of ZBLAN fiber, the fundamental soliton becomes a higher order soliton and experiences a second round of soliton fission creating another fundamental soliton that would shift up to a wavelength of 2.86 µ m via SSFS. In the third stage, the As 2 S 3 microtaper generates a SC that covers the wavelength range of 1.1–3.9 µ m. The As 2 S 3 microwire design with a diameter of 4.4 µ m and a short length of 25 mm provides anomalous dispersion and high mode confinement to the 2.86 µ m soliton while mitigating propagation losses. This all-fiber passive cascade allows a small footprint and alignment-free operation. Numerical simulations match the experimental results and confirm the high coherence of the generated SC.
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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".