A Photonic Transceiver for the Aggregation and Disaggregation of Microwave Signals Based on an Optical Frequency Comb Source
Bibliographic record
Abstract
A photonic transceiver for the aggregation and disaggregation of microwave signals based on an optical frequency comb source is proposed and experimentally demonstrated. The key device is a dual-polarization dual-drive Mach-Zehnder modulator (DP-DDMZM) which is employed to perform signal aggregation and disaggregation. In the aggregation mode, four binary phase shift keying (BPSK) microwave signals with each having a bit rate of 2 Gbps at different frequencies received by four antennas are aggregated into two quadrature phase shift keying (QPSK) single-sideband (SSB) modulation optical signals with orthogonal polarizations. The spectral efficiency is quadrupled with a combined bit rate of 8 Gbps. After coherent detection, the aggregated signals are decoded. The error vector amplitude (EVM) is 19.93% and the bit error rate (BER) is 2.61 X 10<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−7</sup>. In the disaggregation mode, a QPSK microwave signal with a bit rate of 4 Gbps received by an antenna is disaggregated into two BPSK optical signals, with each disaggregated signal having a bit rate of 2 Gbps and an EVM of 13.75%.
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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) | 0.000 | 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 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".