Properties of wavelength converters based on semiconductor optical amplifiers in the arms of a Mach-Zehnder interferometer
Bibliographic record
Abstract
The results of a detailed experimental characterization of a three-port, all-active SOA-MZI wavelength converter are presented. It is shown that for counter-propagating input signals, the ASE noise is intensity modulated due to gain saturation in the output SOA. Consequently, the waveform for the wavelength-converted signal is determined by both cross- phase modulation and self-gain modulation. Time- and frequency-domain measurements are used to characterize the properties of the modulated ASE noise, wavelength-converted signal and total signal. For both co- and counter- propagating signals, the small-signal chirp properties of the wavelength converted along the conversion curve are considered. The measured results for the small-signal chirp and optical conversion are incorporated into a device model that can be used to obtain the large-signal pulse response. Based on this model, good agreement is demonstrated between calculated and measured results for the time dependence of the intensity and chirp of the wavelength-converted signal.
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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 | 0.001 | 0.002 |
| 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 | 0.001 | 0.001 |
| Open science | 0.001 | 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".