A discriminator-aided optical phase-lock loop constructed from commercial components
Bibliographic record
Abstract
Wireless access systems operating at higher microwave/mm-wave frequencies (10-60 GHz) are attractive because of ample spectrum availability and the potential for large bandwidth allocations. The difficulty with such a system is in the high cost associated with the microwave sources and signal distribution. Optical fibers are an obvious means of alleviating distribution problems, but optical modulation techniques are not currently capable of economically generating mm-wave frequencies. One potentially cost-effective method to fabricate such a system is via optical heterodyning. In such a system, it is relatively simple to generate microwave and mm-wave carriers. However, the difficulties in generating a <i><b>high-quality</b></i> signal are two-fold: The first is in maintaining a specific frequency difference (i.e. microwave signal) between the lasers for a prolonged period of time. The second is in narrowing the inherent linewidth of the laser from the MHz values typically produced by conventional semiconductor lasers, down to values more practical for a communication system. The applications in which this microwave signal can be used are determined by the degree to which the linewidth can be reduced. This presentation will discuss the design and implementation of an 11 GHz discriminator-aided, optical phase-lock loop constructed from commercially available external-cavity lasers incorporating fiber Bragg gratings.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| 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 | 0.001 |
| 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".