Implications of injection current and optical input power on the performance of reflective semiconductor optical amplifiers
Bibliographic record
Abstract
A time domain model for reflective semiconductor optical amplifiers (RSOAs) is developed based on the carrier rate equation and wave propagation equation. In this model, the gain saturation effect and the dependence of spontaneous carrier lifetime on carrier density are explicitly included, and the evolution of carrier density and the optical power in time and space under current modulation is considered in detail. Using the time domain model, the performance of RSOAs with different active layer lengths is investigated under different inject current densities and input optical powers. Numerical simulations reveal that the carrier spontaneous lifetime is the foremost limiting factor of RSOA modulation speed, but increasing photon density improves RSOA performance. With increased bias currents or optical input powers, the small signal frequency response is improved and the eye closure penalty under large signal on-off key modulation is reduced, but the extinction ratio of the optical output signal is decreased. Under the same bias current density and optical input power, RSOAs with longer active layers exhibit improved frequency response and smaller eye closure penalty.
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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 | 0.000 |
| 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 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".