Long-range surface plasmon-polariton waveguide sensors with a Bragg grating in the asymmetric double-electrode structureopen access
- Authors
- Joo, Yang Hyun; Song, Seok Ho; Magnusson, Robert
- Issue Date
- Jun-2009
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS EXPRESS, v.17, no.13, pp.10606 - 10611
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS EXPRESS
- Volume
- 17
- Number
- 13
- Start Page
- 10606
- End Page
- 10611
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/176746
- DOI
- 10.1364/OE.17.010606
- ISSN
- 1094-4087
- Abstract
- We propose a Bragg grating resonance sensor based on long-range surface plasmon-polaritons (LRSPP) excited on an asymmetric double-electrode waveguide structure. The proposed LRSPP waveguide sensor utilizes spectral resonance of the asymmetric double-electrode structure by adding a Bragg grating layer on the top surface of the metal slab. We have numerically estimated the bulk index resolution and thickness detection limit of a target biomolecule layer under 30 dB total propagation loss. The sub-mu m fluidic channel between the two metal layers always experiences a highly confined LRSPP mode excited by end-fire coupling with optical fibers, therefore the proposed LRSPP sensor platform can be applied to a variety of integrated sensor-chip scenarios.
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