Type

Journal Article

Authors

Qiang wu
Yuliya Semenova
Gerald Farrell
Chongxiu Yu
Jinhui Yuan
Dejun Liu
Arun Mallik

Subjects

Physics

Topics
single mode fibers engineering light propagation high sensitivity polymethyl methacrylate surface plasmon resonance refractive index multimode interference

High Sensitivity Refractive Index Sensor Based on a Tapered Small Core Single-Mode Fiber Structure. (2015)

Abstract A high sensitivity refractive index (RI) sensor based on a tapered small core single-mode fiber (SCSMF) structure sandwiched between two traditional single-mode fibers (SMF28) is reported. The microheater brushing technique was employed to fabricate the tapered fiber structures with different waist diameters of 12.5, 15.0, and 18.8 μm. Experiments demonstrate that the fiber sensor with a waist diameter of 12.5 μm offers the best sensitivity of 19212.5  nm/RIU19212.5  nm/RIU (RI unit) in the RI range of 1.4304 to 1.4320. All sensors fabricated in this Letter show good linearity in terms of the spectral wavelength shift versus changes in RI. Furthermore, the sensor with the best sensitivity to RI was also used to measure relative humidity (RH) without any coating materials applied to the fiber surface. Experimental results show that the spectral wavelength shift changes exponentially as the RH varies from 60% to 95%. A maximum sensitivity of 18.3 nm per relative humidity unit (RHU) was achieved in the RH range of 90.4% to 94.5% RH.
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Full list of authors on original publication

Qiang wu, Yuliya Semenova, Gerald Farrell, Chongxiu Yu, Jinhui Yuan, Dejun Liu, Arun Mallik

Experts in our system

1
Qiang wu
TU Dublin
Total Publications: 90
 
2
Yuliya Semenova
TU Dublin
Total Publications: 136
 
3
Gerald Farrell
TU Dublin
Total Publications: 212
 
4
Chongxiu Yu
TU Dublin
Total Publications: 26
 
5
Jinhui Yuan
TU Dublin
Total Publications: 24
 
6
Dejun Liu
TU Dublin
Total Publications: 24
 
7
Arun Mallik
TU Dublin
Total Publications: 26