Broadband all-fiber mid-infrared supercontinuum generation in an As<sub>2</sub>S<sub>3</sub>-polycarbonate hybrid microtaper
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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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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 it