Work

Surface plasmon resonance (SPR)-based highly integrated optical fiber sensor for simultaneous detection of temperature, magnetic field, methane, relative humidity, voltage and hydrogen

Year: 2026

Type: preprint

Abstract: Guided by industrial safety production, a six-parameter sensor capable of simultaneously detecting temperature ( T ), magnetic field ( H ), relative humidity ( RH ), voltage ( U ), methane (CH₄), and hydrogen (H₂) is designed. Based on the surface plasmon resonance (SPR) principle and using a 12-hole fiber as the substrate, gold films are coated on alternately arranged air holes, which are then filled with polydimethylsiloxane (PDMS), magnetic fluid (MF), cryptophane-A and ultraviolet-cured fluorosiloxane complex (Crypt-A/UVCFS), polyvinyl alcohol (PVA), E7 nematic liquid crystal (E7NLC), and palladium-tungsten trioxide (Pd-WO 3 ), respectively. This sensor has realized the integrated detection of six physical quantities for the first time in the field of optical fiber sensing, and has promising application prospects in monitoring scenarios where multiple elements change simultaneously, such as environmental monitoring, industrial production status detection, and geological exploration.

Source: Research Square

DOI: 10.21203/rs.3.rs-10728588/v1