Numerical Study of Parabolic Pulse Generation in Backward-Pumped Erbium-Doped Fiber Amplifiers
Bibliographic record
Abstract
In this paper, the actual shape of the gain spectrum and the whole dispersion curve of the Er-doped fiber are employed in the vectorial coupled nonlinear Schrödinger equation to model the parabolic pulse (similariton) generation in the backward-pumped Er-doped fiber amplifier. The input of the amplifier is Gaussian pulses of a high repetition rate. The numerical model is developed to account for the combination of input and amplified spontaneous emission powers to consider the average of all prior iterations in the present interaction to reach a converged solution rather than oscillating between two solutions. The excess kurtosis factor identifies the parabolic pulse among other pulse shapes. The effect of the input pulse width, peak power, and polarization and the impact of the input pump power and the fiber length on the similariton generation are studied.
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How this classification was reachedexpand
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) | 0.000 | 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 | 0.001 |
| 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 teacher head, 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".