Tunable Bloch surface waves devices
3.04.2017
| Date | 3.04.2017 |
|---|---|
| Time | 16:45-18:00 |
| Place |
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| Speaker | Tatiana Kovalevich |
| Area of expertise | Physics |
| Host | Dep. Physik |
| Contact | Grange |
| Abstract | Bloch surface waves (BSWs) are recently developing alternative to surface plasmon polaritons. These surface states can be excited at the interface between periodic dielectric multilayer and a surrounding medium. They perform high quality factor and can be excited both by TE or TM polarized light. Due to dramatically enhanced propagation distance and strong field confinement these surface states can be successfully used in on-chip all-optical integrated devices of increased complexity as well as in biomedical field for fluorescence detection, imaging, vapor sensing, etc. During the talk several approaches to achieve the tunability of BSWs will be discussed. We will take in consideration different coupling methods and the influence of materials of the multilayer on the behavior of the whole one-dimensional photonic crystal. For example, we will study the use of crystalline thin films of LiNbO3 in BSW based integrated optics. |