Monitoring layer-by-layer assembly of polyelectrolyte multi-layers using high-order cladding mode in long-period fiber gratings

0428573 - ÚFE 2015 RIV CH eng J - Journal Article
Tian, F. - Kaňka, Jiří - Li, X. - Du, H.
Monitoring layer-by-layer assembly of polyelectrolyte multi-layers using high-order cladding mode in long-period fiber gratings.
Sensors and Actuators B - Chemical. -, č. 196 (2014), s. 475-479. E-ISSN 0925-4005
R&D Projects: GA MŠMT(CZ) LH11038
Institutional support: RVO:67985882
Keywords : Layer-by-layer assembly * Polyelectrolyte * Cladding mode
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering
Impact factor: 4.097, year: 2014

We have undertaken a combined theoretical and experimental investigation to illustrate and demonstrate the strong correlation between the order of the coupled cladding modes in long-period gratings (LPG) in conventional single mode fiber and their sensitivity to the process of layer-by-layer (LbL) assembly of polyelectrolyte multi-layers. We show that high-order cladding modes such as LP0,10 in LPG are significantly more sensitive than their lower-order counterparts such as LP0,2, with LP0,10 yielding a shift of 1.575 nm in resonance wavelength per polyelectrolyte repeating unit of poly(vinyl pyrrolidone)/poly(methacrylic acid) bi-layer. The integrated LPG/LbL strategy as a robust LbL test-bed has broad ramifications in exploring and exploiting sensors and devices enabled by versatile, stimuli-responsive polyelectrolyte thin films
Permanent Link: http://hdl.handle.net/11104/0233897