Continuously Tunable Microwave Frequency Multiplication by Optically Pumping Linearly Chirped Fiber Bragg Gratings in an Unbalanced Temporal Pulse Shaping System
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Bibliographic record
Abstract
We propose and demonstrate a new and simple method for achieving continuously tunable microwave frequency multiplication using an unbalanced temporal pulse shaping (TPS) system incorporating two linearly chirped fiber Bragg gratings (LCFBGs) written in erbium/ytterbium co-doped fibers. By optically pumping the LCFBGs with different pumping power, the dispersion of the LCFBGs is tuned. The incorporation of the LCFBGs in an unbalanced TPS system would enable the generation of a frequency tunable microwave waveform. The operation of the system is discussed which is then verified by an experiment. Continuously tunable microwave frequency multiplication with a multiplication factor from 5.14 to 11.9 is experimentally demonstrated. The impact of the ripples in the magnitude and group delay responses of the LCFBGs on the performance of the microwave generation is also studied.
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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 | 0.000 |
| 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 | 0.001 |
| 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 it