High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings

Иванов, О.; Caldas, Paulo; Rego, G.

doi:10.3390/s22197119

Cited by 7 publications

(2 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the aircraft applications are considered, there is a high range of temperatures for the sensors, where there are temperatures above 1000 °C in regions close to the engines and thermal equipment and temperatures below 0 °C for structural analysis for in-flight conditions [ 64 ]. In both scenarios (high and low temperatures), the OFS were already employed, where the stability of material properties at low temperatures already shows the possibility of using such fibers even in cryogenic applications [ 65 ]. Considering the low temperatures obtained on in-flight conditions, conventional OFS, such as interferometers [ 66 ], distributed temperature sensing [ 67 ], and FBGs [ 68 ], can be used using their intrinsic sensitivity to temperature variations along the fiber.…”

Section: Flight Environment Sensingmentioning

confidence: 99%

Multifunctional Integration of Optical Fibers and Nanomaterials for Aircraft Systems

2023

View full text Add to dashboard Cite

Smart sensing for aeronautical applications is a multidisciplinary process that involves the development of various sensor elements and advancements in the nanomaterials field. The expansion of research has fueled the development of commercial and military aircrafts in the aeronautical field. Optical technology is one of the supporting pillars for this, as well as the fact that the unique high-tech qualities of aircrafts align with sustainability criteria. In this study, a multidisciplinary investigation of airplane monitoring systems employing optical technologies based on optical fiber and nanomaterials that are incorporated into essential systems is presented. This manuscript reports the multifunctional integration of optical fibers and nanomaterials for aircraft sector discussing topics, such as airframe monitoring, flight environment sensing (from temperature and humidity to pressure sensing), sensors for navigation (such as gyroscopes and displacement or position sensors), pilot vital health monitoring, and novel nanomaterials for aerospace applications. The primary objective of this review is to provide researchers with direction and motivation to design and fabricate the future of the aeronautical industry, based on the actual state of the art of such vital technology, thereby aiding their future research.

show abstract

Section: Flight Environment Sensingmentioning

confidence: 99%

Multifunctional Integration of Optical Fibers and Nanomaterials for Aircraft Systems

2023

View full text Add to dashboard Cite

show abstract

“…In order to predict the thermal behavior of fiber gratings the knowledge of the thermooptic coefficients, dn/dT (also defined as (1/n)(dn/dT)), of the core and cladding materials is required [1][2][3][4]. Vitreous silica is the main component of optical fiber, and it has been an important topic of research for decades.…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Thermo-Optic Coefficient of SiO2 Glass

Rego

2023

Sensors

Self Cite

View full text Add to dashboard Cite

This paper presents a thorough analysis on the temperature dependence of the thermo-optic coefficient, dn/dT, of four bulk annealed pure-silica glass samples (type I—natural quartz: Infrasil 301; type II—quartz crystal powder: Heraeus Homosil; type III—synthetic vitreous silica: Corning 7980 and Suprasil 3001) from room temperature down to 0 K. The three/four term temperature dependent Sellmeier equations and respective coefficients were considered, which results from fitting to the raw data obtained by Leviton et al. The thermo-optic coefficient was extrapolated down to zero Kelvin. We have obtained dn/dT values ranging from 8.16 × 10−6 up to 8.53 × 10−6 for the four samples at 293 K and for a wavelength of 1.55 μm. For the Corning 7980 SiO2 glass, the thermo-optic coefficient decreases monotonically, from 8.74 × 10−6 down to 8.16 × 10−6, from the visible range up to the third telecommunication window, being almost constant above 1.3 μm. The Ghosh’s model was revisited, and it was concluded that the thermal expansion coefficient only accounts for about 2% of the thermo-optic coefficient, and we have obtained an expression for the temperature behavior of the silica excitonic bandgap. Wemple’s model was also analyzed where we have also considered the material dispersion in order to determine the coefficients and respective temperature dependences. The limitations of this model were also discussed.

show abstract

A composite photoluminescent probe based on Er/Yb co-doped tellurite glass powder for dual-parameter measurement of temperature and UV radiation

Liu,

Wu,

Yin

et al. 2024

Ceramics International

View full text Add to dashboard Cite

High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings

Cited by 7 publications

References 61 publications

Multifunctional Integration of Optical Fibers and Nanomaterials for Aircraft Systems

Multifunctional Integration of Optical Fibers and Nanomaterials for Aircraft Systems

Temperature Dependence of the Thermo-Optic Coefficient of SiO2 Glass

A composite photoluminescent probe based on Er/Yb co-doped tellurite glass powder for dual-parameter measurement of temperature and UV radiation

Contact Info

Product

Resources

About