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Surface Plasmon Interferometer Based on Wedge Metal Waveguide and Its Sensing Applications
- Source :
- IEEE Photonics Journal, Vol 4, Iss 1, Pp 291-299 (2012)
- Publication Year :
- 2012
- Publisher :
- IEEE, 2012.
-
Abstract
- We propose a surface plasmon interferometer based on a wedge metal waveguide. Working principles of the device are introduced through theoretical analyses. The interference performances are investigated by finite-difference time-domain (FDTD) method. Because of the special wedge geometry, the interferometer shows an extremely low coupling loss in comparison with the previous reports. An interesting surface plasmon polariton (SPP) coupling and splitting phenomenon is found at the wedge section. It is then split into two surface plasmon modes in two interference arms. Refractive index sensing applications of this interferometer are also discussed, which shows sensitivity as high as 6 × 103 nm/RIU.
- Subjects :
- Sensors
plasmonics
Applied optics. Photonics
TA1501-1820
Optics. Light
QC350-467
Subjects
Details
- Language :
- English
- ISSN :
- 19430655
- Volume :
- 4
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- IEEE Photonics Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.06073df0cf8b4213899d9ae73524c21d
- Document Type :
- article
- Full Text :
- https://doi.org/10.1109/JPHOT.2012.2186562