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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Analysis of immersed silica optical microfiber knot resonator and its application as a moisture sensor

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Gouveia, Marcelo A. [1] ; Pellegrini, Paloma E. S. [1] ; dos Santos, Juliana S. [2] ; Raimundo, Jr., Ivo M. [2] ; Cordeiro, Cristiano M. B. [1]
Total Authors: 5
[1] Univ Estadual Campinas, UNICAMP, Inst Phys Gleb Wataghin, Campinas, SP - Brazil
[2] Univ Estadual Campinas, UNICAMP, Inst Chem, Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: APPLIED OPTICS; v. 53, n. 31, p. 7454-7461, NOV 1 2014.
Web of Science Citations: 13

An embedded silica optical microfiber knot resonator humidity sensor is presented. As silica has a poor response to environmental humidity changes, a surrounding layer of Nafion is used as a transducer. Spectral characterization and also a procedure to determine the coupling and total loss coefficients are presented. Sensitivity as high as (0.29 +/- 0.01) nm/% relative humidity has been noticed. Possible issues that emerge from the use of Nafion such as bulk swelling, refractive index hysteresis, as well as a saturation process, are discussed. (C) 2014 Optical Society of America (AU)

FAPESP's process: 11/00322-2 - Development of an optical sensor for determination of moisture in air and natural gas
Grantee:Juliana Santiago dos Santos
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 08/57808-1 - National Institute of Advanced Analytical Science and Technology
Grantee:Celio Pasquini
Support type: Research Projects - Thematic Grants