Simultaneous measurement of refractive index and temperature using multimode interference inside a high birefringence fiber loop mirror
| Autor: | Chesini, Giancarlo, 1986, Cordeiro, Cristiano Monteiro de Barros, 1973 |
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| Přispěvatelé: | UNIVERSIDADE ESTADUAL DE CAMPINAS |
| Rok vydání: | 2013 |
| Předmět: |
Temperature control
Temperature measurement Espelhos Multiparameter Controle de temperatura Multimode interference Sensor de índice de refração Index refraction sensor Mirrors Fiber loop mirror Artigo original Refractive index and temperature discrimination Refractive index measurement Interferência multimodal |
| Zdroj: | Repositório da Produção Científica e Intelectual da Unicamp Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
| Popis: | Agradecimentos: This work was partially supported by a bi-national cooperation project, CAPES-FCT Brazil/Portugal and by project AQUA-MONITOR no FCOMP-01-0124-FEDER-013911 (Ref. PTDC/AAC-AMB/112424/2009). Carlos Gouveia would like to acknowledge the financial support of FCT (SFRH/BD/63758/2009) Abstract: A fiber optic sensor for simultaneous measurement of refractive index and temperature is presented. The sensing probe is realized by introducing a multimode interference device inside a high birefringence fiber loop mirror resulting in a configuration capable of refractive index and temperature discrimination. The multimode interference peak is sensitive to the surrounding refractive index (90 nm/RIU) and slightly responsive to the temperature (0.01 nm/ degrees C). On the other hand, the birefringent fiber loop mirror is highly sensitive to temperature (2.36 nm/ degrees C) and it has almost no response to refractive index. Using a power ratiometric peak detection scheme, a temperature independent refractive index measurement can be achieved with a resolution of +/- 2.25 x 10(-5) RIU COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES Fechado |
| Databáze: | OpenAIRE |
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