| Texto completo | |
| Autor(es): |
Fujiwara, Eric
[1]
;
da Silva, Luiz Evaristo
[2]
;
Cabral, Thiago Destri
[2]
;
de Freitas, Hugo Eugenio
[2]
;
Wu, Yu Tzu
[1]
;
de Barros Cordeiro, Cristiano Monteiro
[2]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Sch Mech Engn, Lab Photon Mat & Devices, BR-13083860 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Gleb Wataghin Inst Phys, BR-13083859 Campinas, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Lightwave Technology; v. 37, n. 19, p. 5041-5047, OCT 1 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
An optical fiber specklegram chemical sensor based on a concatenated multimode-no-core-multimode structure is reported. The 30 mm-no-core section is immersed in the analyzed liquid so the number of excited modes is modulated by the surrounding refractive index value, affecting the interference of the several propagating modes and consequently the output specklegram, whose changes are quantified by the zero mean normalized cross-correlation coefficient. The sensor was evaluated on the measurement of ethanol-water solutions, resulting in 18.7 RIU-1 sensitivity (5 x 10(-4) resolution) for the 1.33 to 1.36 refractive index interval, besides 0.07 degrees C-1 temperature sensitivitywithin the 26-32. Crange. Moreover, the systemwas also tested on liquid level measurements, yielding 0.05 mm(-1) sensitivity and 0.2 mm resolution. The results are comparable to previously reported multimodal interferometers based onmore complicated interrogation schemes, indicating that the specklegram sensor is a feasible alternative for the sensitive and straightforward measurement of liquid samples. (AU) | |
| Processo FAPESP: | 14/50632-6 - Surface-plasmon resonance sensors based on microstructured optical fiber. (fapesp-aka 2014) |
| Beneficiário: | Cristiano Monteiro de Barros Cordeiro |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/25666-2 - Desenvolvimento de sensor de fibra óptica para medição de sinais de miografia de força aplicado a interfaces humano-robô |
| Beneficiário: | Eric Fujiwara |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |