Edge-Triggered Bi-Phase Modulation for the Generation and Modulation of UWB Pulses
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Bibliographic record
Abstract
We propose and demonstrate a novel scheme called edge-triggered bi-phase modulation for the generation and modulation of ultra-wideband (UWB) pulses in the optical domain. The proposed system consists of a laser diode, a Mach-Zehnder modulator (MZM), and a photodetector. An input data sequence with either return-to-zero or nonreturn-to-zero format is sent to the MZM via its radio-frequency port. The MZM is biased at the quadrature point; for an input pulse having a pulse amplitude equal to the two times the half-wave voltage of the MZM, a pair of UWB mono- cycles is generated with opposite polarities corresponding to the rising and falling edges of the input pulse. A proof-of-concept experiment is performed. A UWB monocycle sequence is generated when a square-wave with a frequency of 680 MHz is applied to the MZM. The generated UWB pulse has a 10-dB bandwidth of 5 GHz with a fractional bandwidth of 165%.
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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 it