Long Period Fiber Grating for Biosensing: An Improved Design Methodology to Enhance Add-Layer Sensitivity

被引：22

作者：

Bandyopadhyay, Sankhyabrata ^{[1
]}

Del Villar, Ignacio ^{[3
]}

Basumallick, Nandini ^{[1
]}

Biswas, Palas ^{[1
]}

Dey, Tanoy Kumar ^{[1
]}

Bandyopadhyay, Somnath ^{[1
,2
]}

机构：

[1] CSIR, Cent Glass & Ceram Res Inst, Kolkata 700032, India

[2] CGCRI, AcSIR, Kolkata, India

[3] Univ Publ Navarra, Pamplona 31006, Spain

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2018年 / 36卷 / 04期

关键词：

Add-layer sensing; bio-sensing; cladding modes; couple mode theory; long period fiber grating; SURFACE-PLASMON RESONANCE; DISPERSION TURNING-POINT; TRANSITION MODE; DEPOSITION; IMMOBILIZATION; COATINGS; INDEX;

D O I：

10.1109/JLT.2017.2754549

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present our theoretical study on the design of long period fiber grating (LPFG) sensor where its add-layer sensitivity is enhanced. Add-layer sensitivity quantifies the sensitivity of the sensor to the changes taking place within few tens of nanometers around the receptor molecules. Two different methodologies: the use of dual overlay layer and tailoring of the intermodal separation between two cladding modes have been used to enhance the add-layer sensisstivity. Using coupled mode analysis, we compute several examples to carry out a detailed comparative analysis between the results obtained, focusing on the cladding mode near mode transition.

引用

页码：1178 / 1184

页数：7

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