Related Experiment Video
Updated: Jun 22, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
Published on: August 30, 2012
Surface plasmon resonance sensor based on a dual-hole optical fiber for temperature and refractive index detection
None:
This paper presents a surface plasmon resonance (SPR) sensor based on a dual-hole optical fiber, designed for the simultaneous measurement of refractive index (RI) and temperature. The sensor is fabricated by side-polishing the dual-hole fiber and coating gold and silver films in the left and right holes, respectively. Additionally, the right hole is filled with polydimethylsiloxane to enable dual-parameter detection. We analyzed the sensor's performance using the finite element analysis software COMSOL, and the results indicate a peak sensitivity reaching 3000 nm/RIU across an RI interval of 1.34-1.38, along with a temperature sensitivity measured at -4.5nm/∘C within a range spanning from 0°C to 40°C. The proposed dual-hole fiber SPR sensor features a simple structure and demonstrates high sensitivity and effective dual-parameter sensing capabilities. This provides an efficient solution for the simultaneous monitoring of temperature and RI, making it suitable for in situ measurements in applications such as chemical reagent preparation.
Related Concept Videos
IR Spectrometers
Equipments Used to Measure Body Temperature
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Temperature Measurement Sites
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Gas Chromatography: Types of Detectors-I
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
Gas Chromatography: Types of Detectors-II

