High sensitivity refractive index sensor based on triple layer MgF2-gold-MgF2 coated nano metal films photonic crystal fiber

Abdullah, Hasan Zuhudi; Ahmed, Kawsar; Alam, Mirza Sanjida; Rashed, Ahmed Nabih Zaki; Mitu, Sumaiya Akhtar; Al-Zahrani, Fahad Ahmed; Kabir, Md. Anowar

doi:10.1016/j.ijleo.2021.166950

Cited by 50 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TiN rods and ITO layers are considered in the following designed structures, which can spread the functionality of the structures (sensors) to near-infrared ranges [2][3][4]. The background material of the SPR-PCF structure is the fused silica, with the refractive index being defined by the Sellmeier equation [16][17][18]:…”

Section: Sensor Design and Modelingmentioning

confidence: 99%

Design of new infrared nano sensor based on surface plasmon resonance photonic crystal fibers

Moayed¹,

Sadeghi²,

Adelpour³

2022

Laser Phys.

View full text Add to dashboard Cite

In this paper, five different surface plasmon resonance photonic crystal fiber (SPR-PCF) structures are proposed and evaluated by numerical modeling. The structures are based on photonic crystal fibers with defects rods of air, Au, and TiN in the background of silica. In the fourth and fifth designs, two grooves coated with gold layers are considered to improve the functionality of the structures and help the analyte to become closer to the fiber core. The effects of geometrical parameters like radius, thickness, and width on the loss spectrum are also investigated, and the results are presented. Finally, a double D-shaped SPR-PCF sensor with ITO belts and U-shaped grooves covered with gold is proposed. The proposed sensor can detect a low RI change from 1.4 to 1.6 with a maximal sensitivity factor around 6000 (nm/RIU). The proposed SPR-PCF sensor can be an appropriate candidate in nano-optical integrated circuits (for different applications) due to its compact size and high sensitivity factor.

show abstract