Deposition of overlays by electrostatic self-assembly in long-period fiber gratings
TLDR
A theoretical model for analyzing a multilayer cylindrical waveguide is presented that permits the phenomenon to be understood and predicted and results are corroborated with experimental ones obtained by electrostatic self-assembly.Abstract:
It was proved that the deposition of an overlay material onto a long-period fiber grating causes important shifts in the wavelengths of the typical attenuation bands that are caused by coupling between cladding and core modes [Opt. Lett.27, 682 (2002) ]. A theoretical model for analyzing a multilayer cylindrical waveguide is presented that permits the phenomenon to be understood and predicted. An overlay of higher refractive index than the cladding starts to guide a mode if a certain thickness value is exceeded. This causes large shifts in the resonance wavelength induced by the grating. One important application of this phenomenon to sensors is enhancement of the sensitivity of a long-period fiber grating to ambient conditions. Theoretical results are corroborated with experimental ones obtained by electrostatic self-assembly.read more
Citations
More filters
Journal ArticleDOI
Optimization of sensitivity in Long Period Fiber Gratings with overlay deposition.
TL;DR: The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating permits to improve the sensitivity to ambient refractiveIndex changes in a great manner, and henceforward fast shifts of the resonance wavelength of the attenuations bands in the transmission spectrum are studied.
Journal ArticleDOI
Optical Refractive Index Sensors with Plasmonic and Photonic Structures: Promising and Inconvenient Truth
Yi Xu,Yi Xu,Ping Bai,Xiaodong Zhou,Yuriy Akimov,Ching Eng Png,Lay Kee Ang,Wolfgang Knoll,Lin Wu +8 more
TL;DR: In this paper, the authors focus on optical refractive index (RI) sensors with no fluorescent labeling required, and utilize two parameters to characterize and compare the performance of optical RI sensors: sensitivity to RI change (denoted by symbol SRI) and figure of merit (in short, FoM).
Journal ArticleDOI
Mode transition in high refractive index coated long period gratings.
Andrea Cusano,Agostino Iadicicco,P. Pilla,L. Contessa,Stefania Campopiano,Antonello Cutolo,Michele Giordano +6 more
TL;DR: The numerical and experimental investigation of the cladding modes re-organization in high refractive index (HRI) coated Long Period Gratings (LPGs) is reported, leading to relevant improvements in the SRI sensitivity in terms of wavelength shift and amplitude variations of the LPGs attenuation bands.
Journal ArticleDOI
Lab on Fiber Technology for biological sensing applications
Patrizio Vaiano,Benito Carotenuto,Marco Pisco,Armando Ricciardi,Giuseppe Quero,Marco Consales,Alessio Crescitelli,Emanuela Esposito,Andrea Cusano +8 more
TL;DR: In this paper, the authors present an overview of the Lab on Fiber technologies and devices with special focus on the design and development of advanced fiber optic nanoprobes for biological applications and discuss the strategies, main achievements and related devices developed in the “Lab on Fiber roadmap.
Journal ArticleDOI
Fiber humidity sensors with high sensitivity and selectivity based on interior nanofilm-coated photonic crystal fiber long-period gratings
TL;DR: A photonic crystal fiber (PCF) long-period grating (LPG) humidity sensor has been developed with high sensitivity and selectivity for nondestructive detection of moisture ingression into structures that can potentially lead to corrosion as mentioned in this paper.
References
More filters
Journal ArticleDOI
Fuzzy Nanoassemblies: Toward Layered Polymeric Multicomposites
TL;DR: In this article, a general approach for multilayers by consecutive adsorption of polyanions and polycations has been proposed and has been extended to other materials such as proteins or colloids.
Long-period fiber grating as band-rejection filters
TL;DR: In this paper, a new class of long-period fiber gratings that can be used as in-fiber, low-loss, band-rejection filters is presented.
Journal ArticleDOI
Long-period fiber gratings as band-rejection filters
Ashish Madhukar Vengsarkar,Paul Joseph Lemaire,J. B. Judkins,Vikram Bhatia,Turan Erdogan,John E. Sipe +5 more
TL;DR: In this paper, a new class of long-period fiber gratings that can be used as in-fiber, low-loss, band-rejection filters is presented.
Journal ArticleDOI
Optical fibre long-period grating sensors: characteristics and application
Stephen W. James,Ralph P. Tatam +1 more
TL;DR: In this paper, the authors reviewed recent research on fiber optic long-period gratings (LPGs) with emphasis placed upon the characteristics of LPGs that make them attractive for applications in sensing strain, temperature, bend radius and external index of refraction.
Journal ArticleDOI
Cladding-mode resonances in short- and long-period fiber grating filters
TL;DR: In this article, the transmission of a mode guided by the core of an optical fiber through an ultraviolet-induced fiber grating when substantial coupling to cladding modes occurs is analyzed both experimentally and theoretically.
Related Papers (5)
Optical fiber long-period gratings with Langmuir–Blodgett thin-film overlays
Optical fibre long-period grating sensors: characteristics and application
Stephen W. James,Ralph P. Tatam +1 more