Fiber optic index sensor enhanced by gold nanoparticle assembly on long period grating

0484868 - ÚFE 2018 RIV DE eng J - Journal Article
Tian, F. - Li, X. - Kaňka, Jiří - Du, H.
Fiber optic index sensor enhanced by gold nanoparticle assembly on long period grating.
Optik. Roč. 132, March (2017), s. 445-449. ISSN 0030-4026. E-ISSN 1618-1336
R&D Projects: GA MŠMT(CZ) LH11038
Institutional support: RVO:67985882
Keywords : Layer-by-layer * Long period grating * Au nanoparticle
OECD category: Electrical and electronic engineering
Impact factor: 1.191, year: 2017

The sensing performance of long period grating (LPG) in integration with colloidal gold nanoparticles (LPG-AuNPs) is investigated. An LPG coupled with a higher cladding mode of LP0.10 is fabricated on single mode fiber (SMF) with higher sensitivity to refractive index compared with lower cladding modes such as LP0,2, LP0,3 and LP0.4 via symmetric CO2 laser irradiation. A bilayer of poly (allylamine hydrochloride) (PAH) and gold nanoparticles is deposited on the grating portion via layer-by-layer self-assembly technique. It is found that the sensitivity is increased from 460 nmirefractive index unit (RIU) to 759 nm/RIU using the LPG-AuNPs
Permanent Link: http://hdl.handle.net/11104/0279990