Design of silica-based photonic crystal fiber for biosensing applications

Mescia, Luciano; Prudenzano, Francesco; Allegretti, L.; Calò, Giovanna; Sario, M. De; D’Orazio, A.; Maiorano, L.; Palmisano, T.; Petruzzelli, V.

doi:10.1016/j.jnoncrysol.2009.01.047

Cited by 9 publications

(10 citation statements)

References 16 publications

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“…Recent progress in nanotechnology has lead to the fabrication of new optical sensors. Various technological approaches have been considered for the realization of devices: photonic crystals [1][2][3][4][5], ring resonators [6][7], evanescent field optical waveguides [8][9], metallodielectric structures [10][11] and microstructured fiber optics [12][13], just to mention a few. Optical sensing techniques based on surface plasmon coupling are indeed not new [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Experimental demonstration of a novel bio‑sensing platform via plasmonic band gap formation in gold nano‑patch arrays

et al. 2011

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In this paper we discuss the possibility of implementing a novel bio-sensing platform based on the observation of the shift of the leaky surface plasmon mode that occurs at the edge of the plasmonic band gap of metal gratings, when an analyte is deposited on top of the metallic structure. We report numerical calculations, fabrication and experimental measurements to prove the sensing capability of a two-dimensional array of gold nano-patches in the detection of a small quantity of Isopropyl Alcohol (IPA) deposited on top of sensor surface. The calculated sensitivity of our device approaches a value of 1000 nm/RIU with a corresponding Figure of Merit (FOM) of 222 RIU(-1). The presence of IPA can also be visually estimated by observing a color variation in the diffracted field. We show that color brightness and intensity variations can be ascribed to a change in the aperture size, keeping the periodicity constant, and to different types of analyte deposited on the sample, respectively. Moreover, we demonstrate that unavoidable fabrication imperfections revealed by the presence of rounded corners and surface roughness do not significantly affect device performance.

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Section: Introductionmentioning

confidence: 99%

Experimental demonstration of a novel bio‑sensing platform via plasmonic band gap formation in gold nano‑patch arrays

et al. 2011

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“…Figure 15 illustrates the example of the set-up reported in [106]. In [108][109][110] fiber optic sensors for biosensing are reported. In particular in [108] the design of a photonic crystal fiber sensor for methadone detection in water was performed.…”

Section: Evanescent Field Hollow Core Liquid Filled and Exposed Optmentioning

confidence: 99%

“…In [108][109][110] fiber optic sensors for biosensing are reported. In particular in [108] the design of a photonic crystal fiber sensor for methadone detection in water was performed. The sensor feasibility was numerically investigated by employing a Finite Element Method (FEM) numerical code.…”

Section: Evanescent Field Hollow Core Liquid Filled and Exposed Optmentioning

confidence: 99%

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Advances on Optical Fiber Sensors

Mescia

Prudenzano

2013

Fibers

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In this review paper some recent advances on optical fiber sensors are reported. In particular, fiber Bragg grating (FBG), long period gratings (LPGs), evanescent field and hollow core optical fiber sensors are mentioned. Examples of recent optical fiber sensors for the measurement of strain, temperature, displacement, air flow, pressure, liquid-level, magnetic field, and the determination of methadone, hydrocarbons, ethanol, and sucrose are briefly described.

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“…Bulk siloxane membranes optimized for monitoring organic compounds in the NIR were proposed in [20]. In Ref [21] we numerically investigated two evanescent field sensors based on square and hexagonal lattice solid core MOF having PDMS cladding layer as the sensitive region. The sensors allowed detecting methadone from aqueous media, in the ultraviolet wavelength region.…”

Section: Introductionmentioning

confidence: 99%