Long-period fiber grating: a specific design for biosensing applications

被引：44

作者：

Bandyopadhyay, Sankhyabrata ^{[1
,2
]}

Biswas, Palas ^{[1
]}

Chiavaioli, Francesco ^{[3
]}

Dey, Tanoy Kumar ^{[1
]}

Basumallick, Nandini ^{[1
]}

Trono, Cosimo ^{[3
]}

Giannetti, Ambra ^{[3
]}

Tombelli, Sara ^{[3
]}

Baldini, Francesco ^{[3
]}

Bandyopadhyay, Somnath ^{[1
]}

机构：

[1] CSIR Cent Glass & Ceram Res Inst, 196 SC Mullick Rd, Kolkata 700032, India

[2] CSIR Cent Glass & Ceram Res Inst, Acad Sci & Innovat Res AcSIR, Kolkata 700032, India

[3] CNR, Inst Appl Phys Nello Carrara, IFAC, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy

来源：

APPLIED OPTICS | 2017年 / 56卷 / 35期

关键词：

SURFACE-PLASMON RESONANCE; QUARTZ-CRYSTAL MICROBALANCE; TRANSITION MODE; OVERLAY DEPOSITION; ACOUSTIC-WAVE; SENSITIVITY; INDEX; POINT; ADSORPTION; SENSORS;

D O I：

10.1364/AO.56.009846

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a detailed investigation on the modeling of long-period fiber grating (LPFG) sensors is discussed with the aim of providing a more realistic solution for their use in biosensing. Add-layer sensitivity, i.e., sensitivity of the sensor to an additional layer adhered onto the fiber surface, is quantified and a clear and complete analysis about the influence of the average thickness of the deposited biological sensing layers, as well as the change in refractive index of these layers, on the resonant wavelength of the cladding modes of an LPFG is provided. Add-layer sensitivity of LPFG sensors close to mode transition (MT) and also at turn-around point (TAP) are taken into account. Adsorbed layer thicknesses, as estimated from measured wavelength shifts of the LPFG, are found to have a good match with the values obtained through other measurement techniques. (C) 2017 Optical Society of America

引用

页码：9846 / 9853

页数：8

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