Random-Scrambling Tunable POTDR for Distributed Measurement of Cumulative PMD
Why this work is in the frame
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Bibliographic record
Abstract
We provide the theoretical framework for a new method of distributed measurement of cumulative PMD along single-mode optical fiber links. Independent pairs of optical pulses are launched into the fiber, where each pair consists of two pulses having the same state of polarization (SOP) but two different, closely spaced wavelengths. The key aspect is that both the SOP and center wavelength of a given pair need not be correlated with those of any other pair. This random-scrambling approach is well suited for an economically designed instrument that is more robust for field applications than previously reported approaches. Since no assumed model of the distributed birefringence behavior is required, the method is suitable for any actual single-mode telecom fiber span encompassing many fiber sections of different types and origins.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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