A Comparison of Equalizers for Compensating Polarization-Mode Dispersion in 40-Gb/s Optical Systems
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Bibliographic record
Abstract
A system-level analysis of first-order polarization-mode dispersion (PMD) effects in a 40-Gbit/s optical system is used to compare quantitatively different electronic equalizer architectures as potential PMD compensators. It is found that a decision feedback equalizer (DFE) consisting of a 3-tap feedforward equalizer (FFE) and a 1-tap feedback equalizer (FBE) is able to increase the useful length of an optical system by more than eight times when PMD is the dominant limiting factor.
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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 |
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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