Abstract
It is demonstrated theoretically and experimentally that, by using the guided-wave surface-plasmon sensor configuration with a top layer of dielectric thin film (10-15 nm) having a high value of the real part of the dielectric function, it is possible to improve the sensitivity of the sensor up to 1 order of magnitude. The stability is improved because the thin nanolayer acts as a protection layer for the metal. The enhancement is due to the increase in the interaction volume and the evanescent field enhancement near the top layer-analyte interface.
| Original language | English |
|---|---|
| Pages (from-to) | 2539-2541 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 33 |
| Issue number | 21 |
| DOIs | |
| State | Published - 1 Nov 2008 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics