Pressure Sensing Based on Nonconventional Air-Guiding Transmission Windows in Hollow-Core Photonic Crystal Fibers
Tipo
Artigo
Data de publicação
2009
Periódico
Journal of Lightwave Technology
Citações (Scopus)
19
Autores
de Oliveira R.E.P.
de Matos C.J.S.
Hayashi J.G.
Cordeiro C.M.B.
de Matos C.J.S.
Hayashi J.G.
Cordeiro C.M.B.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
Non-conventional core-guided transmission windows within the visible spectral range are identified in commercial hollow-core photonic crystal fibers designed to operate at 1550 nm. These windows are likely to be related to higher-order cladding photonic bandgaps and are found to be highly dependent on the cladding microstructure, thus being affected by pressure-induced stress/deformation. 20-cm-long fiber samples are then used to demonstrate simple and temperature-independent hydrostatic pressure sensing with two different setups. While in the first setup pressure is externally applied to the fiber and results in operation in the hundreds of kgf/cm2 (or tens of MPa) range, the second setup applies pressure directly to fiber internal microstructure and is sensitive to pressures down to a fraction of kgf/cm2 (hundredths of MPa). The fact that pressure is directly transduced into transmitted power greatly simplifies the required sensor interrogation setup. © 2009, by The Institute of Electrical Electrical and Electronics Engineers, Inc. All rights reserved.