Title :
High sensitivity temperature sensor based on side-polished fiber optic
Author :
Senosiain, Javier ; Díaz, Idoya ; Gastón, Ainhoa ; Sevilla, Joaquín
Author_Institution :
Dept. de Ingenieria Electr. y Electron., Univ. Publica de Navarra, Pamplona, Colombia
Abstract :
Side-polished optical fiber has been long used to build fiber sensors and other devices. In this work we present a particular application leading to sensors of environmental temperature in the range from 10 to 70°C. Although a high sensitivity of 0.5 dB/°C can be obtained (with insertion losses around 2 dB) the parameter modulated is optical power. The sensor principle combines the extreme sensitivity of polished fiber to external refractive indexes for values close to the core one and the index temperature variation of reference liquids such as vegetal oils
Keywords :
fibre optic sensors; optical fibre fabrication; polishing; refractive index measurement; temperature sensors; 10 to 70 C; consecutive moldings; environmental temperature sensors; external refractive indices sensitivity; fiber optic sensors; high sensitivity temperature sensor; index temperature variation; polishing dependence; reference liquids; side-polished optical fiber; transmitted optical power; vegetal oils; Insertion loss; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical losses; Optical modulation; Optical refraction; Optical sensors; Temperature distribution; Temperature sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.846844
