A wideband frequency tunable optoelectronic oscillator incorporating a tunable microwave photonic filter based on a phase-shifted fiber Bragg grating
Bibliographic record
Abstract
A wideband and frequency-tunable optoelectronic oscillator implemented by employing a two-port optical phase modulator and a phase-shifted fiber Bragg grating without using electrical microwave filters is proposed and experimentally demonstrated. The key device is the phase-shifted fiber Bragg grating, which functions, in conjunction with the phase modulator in the loop, to form a tunable high-Q microwave bandpass filter to perform frequency selection. The central frequency of the microwave photonic filter can be tuned by tuning the wavelength of the incident light wave; therefore, the oscillation frequency can also be continuously tuned. An experiment is performed. The generation of a microwave signal with a frequency that is tunable from 6 to 14 GHz is demonstrated.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| 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".