2012
DOI: 10.3390/s120607886
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A Temperature-Insensitive Cladding-Etched Fiber Bragg Grating Using a Liquid Mixture with a Negative Thermo-Optic Coefficient

Abstract: To compensate for the temperature dependency of a standard FBG, a cladding-etched FBG immersed with a liquid mixture having a negative thermo-optic coefficient is presented, and its characteristics are investigated. The Bragg wavelength of the cladding-etched FBG is shifted counter to the direction of the Bragg wavelength shift of a conventional FBG according to the mixing ratio of glycerin to water; thus, the temperature-dependent Bragg wavelength shift was almost compensated by using a liquid mixture of wate… Show more

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Cited by 27 publications
(10 citation statements)
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“…Different optical properties of the films were obtained by varying flow of SiH 4 and pressure in the chamber during the deposition, which were 150 cccm and 0.9 Torr or 500 sccm and 1.2 Torr for low (n 1 ) -0000. 1 [wu] UoualaneAA 0091 0991 0091 structure is described by Eq. 2.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Different optical properties of the films were obtained by varying flow of SiH 4 and pressure in the chamber during the deposition, which were 150 cccm and 0.9 Torr or 500 sccm and 1.2 Torr for low (n 1 ) -0000. 1 [wu] UoualaneAA 0091 0991 0091 structure is described by Eq. 2.…”
Section: Methodsmentioning
confidence: 99%
“…The probes are often based on fiber bragg gratings (FBGs) [1] or Fabry-Perot (FP) [2] resonator. When the refractive index (RI) sensing is discussed, the cladding of the FBG structure needs to be significantly etched in order to let the guiding mode interact with external medium [1]. The effective application of FP resonator requires, in turns, the measured liquid to penetrate the FP cavity [2].…”
Section: Introductionmentioning
confidence: 99%
“…Hence, in practice, unclad optical fibers are used, with the core exposed to the surrounding medium so that an evanescent wave can extend in this medium. This is usually obtained through a chemical etching process, most often with hydrofluoric acid (HF) [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] or through a side-polishing process [ 31 , 32 , 33 , 34 , 35 ]. The latter configuration has strong similarities with the use of Bragg gratings produced in D-shaped optical fibers [ 36 ].…”
Section: Review Of Grating Configurations Used For Spr Excitationmentioning
confidence: 99%
“…The probes based on stacked structures are often identified with fiber bragg gratings (FBGs) [1], but they need to be significantly etched in order to be used as a refractive index (RI) sensor. This modification of fiber's structure affects its integrity and makes it very fragile.…”
Section: Introductionmentioning
confidence: 99%