Abstract
By applying a recently proposed coupled-Bloch-mode approach, we have derived the resonance condition for the longitudinal modes of passive photonic crystal (PhC) line-defect cavities. We have derived simple expressions for the electric field depending on the size of the cavity and the order of the resonant mode. We have shown that, as the cavity becomes longer, the fundamental mode turns from FP-like to DFB-like and the fraction of its wavevector components within the light cone is gradually suppressed. Importantly, we have clarified the physical origin for this behaviour.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE |
| Editors | Alexey A. Belyanin, Peter M. Smowton |
| Number of pages | 9 |
| Volume | 11301 |
| Publisher | SPIE - International Society for Optical Engineering |
| Publication date | 1 Jan 2020 |
| Article number | 113010W |
| ISBN (Electronic) | 9781510633650 |
| DOIs | |
| Publication status | Published - 1 Jan 2020 |
| Event | SPIE Photonics West OPTO 2020 - Moscone Convention Center, San Francisco, United States Duration: 1 Feb 2020 → 6 Feb 2020 Conference number: 19 |
Conference
| Conference | SPIE Photonics West OPTO 2020 |
|---|---|
| Number | 19 |
| Location | Moscone Convention Center |
| Country/Territory | United States |
| City | San Francisco |
| Period | 01/02/2020 → 06/02/2020 |
| Sponsor | SPIE |
| Series | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11301 |
| ISSN | 0277-786X |
Keywords
- Bloch modes
- Coupled-mode theory
- DFB-like
- FP-like
- Photonic crystal (PhC)
- Photonic crystal cavities
- Q-factor
- Radiation loss