Silicon-Based Single-Mode On-Chip Ultracompact Microdisk Resonators With Standard Silicon Photonics Foundry Process
Bibliographic record
Abstract
A silicon-based on-chip ultracompact microdisk resonator (MDR) with a super-high Q-factor to support single-mode operation is designed, fabricated, and tested. In our design, a compact MDR has an ultrasmall radius of 3.7 μm with an additional slab waveguide incorporated to wrap the disk and the bus waveguide with an aim to weaken the disk sidewall roughness, to increase the confinement of the optical field and to strengthen the optical coupling between the bus waveguide and the disk. By using the three-level etching capability offered by a standard silicon photonics foundry, two ultracompact MDRs with two different heights of 220 and 150 nm are fabricated, in which the incorporated slab waveguide is kept to have an identical height of 60 nm. Optical performance of the MDRs is evaluated. The measured transmission spectrums show that both the MDRs are operating in single mode with no resonance splitting observed. The MDR with a height of 220 nm has a significantly improved Q-factor of 75,000, which is useful for narrowband filtering. The MDR with a height of 150 nm has a strong energy distribution around the top surface of the disk, which is useful for refractive index sensing. In addition, for the MDR with a height of 220 nm, owing to its ultrahigh light-confining capacity and ultracompact mode volume in the MDR, nonlinear optical response in the cavity is considerably enhanced and an optical bistability is observed experimentally when the input optical power is as small as -17 dBm.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| 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".