Phase linearity and uniformity in optoelectronic-VLSI receiver arrays
Bibliographic record
Abstract
Parallel synchronous digital links require tight control over inter-channel skew in order to obtain maximum performance. In parallel optical interconnects (POIs), inter-channel skew can arise from differences in optical and electrical path lengths as well as latency variations through transmitters and receivers. The receiver pre-amplifier is particularly susceptible to latency variation. In POI applications such as optoelectronic-VLSI, pre-amplifiers can exhibit variable latency and gain resulting from differences in optical power levels across the receiver array due to transmitter, laser, detector, or optical system non-uniformity. This establishes an input DC photocurrent and pre-amplifier operating point that varies across the array, resulting in gain and phase non-uniformity. We consider different receiver pre-amplifier designs and the susceptibility of their gain and phase delay uniformity to operating point variations. Feedback circuitry that stabilizes the pre-amplifier operating point is considered as a potentially robust approach for array-scale POI skew reduction. Optical ring oscillators are used to characterize the phase delay of different pre-amplifier designs by measuring the period of oscillation as a function of optical system power throughput.
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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 | 0.001 |
| Open science | 0.001 | 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".