Investigation of High-Transmission 100-GHz Bands Between 1 and 3 THz Using a Nonlinear Upconversion Technique
Bibliographic record
Abstract
The ever-increasing demand for high-speed data transmission continues to drive research toward sixth generation (6G) wireless technologies and beyond. Terahertz (THz) carrier frequencies are considered promising for achieving data rates up to terabits per second, yet their feasibility is strongly affected by environmental factors such as water vapor absorption. In this work, the propagation distances of several 100 GHz-wide THz channels between 1 and 3 THz were investigated under 35% relative humidity conditions using a table-top spectroscopy apparatus with a nonlinear parametric upconversion detection scheme. This approach avoids temporal scanning and is therefore more practical for wireless communications, while also demonstrating that selected spectral windows can support meaningful propagation distances despite water vapor absorption. We further estimate the usable ranges for seven distinct transmission bands, each offering bandwidths sufficiently broad to sustain high data transfer rates. These results highlight the relevance of THz transmission windows for short-, mid-, and long-range wireless applications and provide timely insight into the exploration of unallocated spectral bands in the THz range.
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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".