Gold-coated optical fiber supermode interferometer for insulin bio-sensing

被引：8

作者：

Zhu, Tianbo ^{[1
]}

Chah, Karima ^{[1
]}

Chiavaioli, Francesco ^{[2
]}

Villatoro, Joel ^{[3
,4
]}

Caucheteur, Christophe ^{[1
]}

机构：

[1] Univ Mons, Electromagnetism & Telecommun Dept, 31Blvd Dolez, B-7000 Mons, Belgium

[2] Natl Res Council Italy, Inst Appl Phys Nello Carrara, I-50019 Sesto Fiorentino, Italy

[3] Univ Basque Country, Dept Commun Engn, UPV EHU, Bilbao 48013, Spain

[4] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain

来源：

OPTICS AND LASER TECHNOLOGY | 2024年 / 168卷

关键词：

Multicore fiber interferometer; Refractometric sensing; Bio-sensing; REFRACTIVE-INDEX; TEMPERATURE; SENSORS;

D O I：

10.1016/j.optlastec.2023.109878

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, we present a supermode interferometer for biosensing application. The interferometer was fabricated with a segment of a seven-core fiber fusion-spliced to a standard single-mode fiber. We have found that when a thin gold layer was deposited on the multicore fiber (MCF) end facet, the response of the interferometer to refractive index (RI) changes was polarization dependent. The highest sensitivity to RI was achieved for a similar to 10 nm-thick gold coated sample when P-polarized light was used. The gold-coated sample was later biofunctionalized and then used for insulin detection. The sensor was able to detect insulin with a concentration level of 10(-8) g/ml.

引用

页数：6

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