Colorless and Preamplifierless Reception Using an Integrated Si-Photonic Coherent Receiver
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Bibliographic record
Abstract
We experimentally study the sensitivity limits of an integrated Si-photonic dual-polarization balanced coherent receiver co-packaged with transimpedance amplifiers. For 28 Gbaud PDM-QPSK and PDM-16QAM signals, we compare colorless and optical preamplifierless reception to the case where an optical preamplifier and optical filters are used before the receiver. Back-to-back receiver sensitivities are evaluated. After propagation over an SMF-28e <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> EDFA amplified link and assuming a 3.8 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> FEC threshold, colorless/preamplifierless reception using the Si-photonic receiver allows for error-free transmission of 112 Gbps PDM-QPSK over 4800 km at a received power of -23 dBm and of 224 Gbps PDM-16QAM over 640 km at a received power of -17 dBm. Finally, a 16 × 112 Gbps PDM-QPSK WDM experiment is carried out. Using the Si-photonic receiver for colorless/preamplifierless reception of all channels, we achieve error-free transmission for all channels over 4160 km at a received power of -21 dBm per channel. Results reveal that the receiver provides excellent sensitivity while allowing us to save cost, footprint, and power if used in a colorless/preamplifierless scheme.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 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