High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings

Mata-Chavez, Ruth I.; Martı́nez-Rios, A.; Estudillo-Ayala, J. M.; Rodríguez, Ezequiel; Rojas-Laguna, R.; Hernández-García, J. C.; Guzmán-Chávez, Ana Dinora; Claudio-Gonzalez, David; Huerta-Mascotte, Eduardo

doi:10.3390/s130303028

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…Long-period fiber gratings (LPFGs) are a class of gratings that typically have a period on the level of hundreds of micrometers and can couple the fundamental mode with co-propagating modes [1,2]. A prominent feature of LPFGs is that they are very sensitive to changes in the refractive index (RI) of the surrounding environmental media on the cladding glass surface in the grating region, which makes LPFGs well suited to monitor the surrounding RI.…”

Section: Introductionmentioning

confidence: 99%

An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths

Zhang

Shi

et al. 2016

Sensors

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The response of a novel long-period fiber grating (LPFG) with a period of 180 µm to a surrounding refractive index (RI) was investigated. The results displayed that, with the increase in RI of the surrounding media of cladding glass in the grating region, the resonant peak located at 1336.4 nm in the transmission spectrum gradually shifts towards a shorter wavelength, while the resonant peak located at 1618 nm gradually shifted towards a longer wavelength. Moreover, the resonant peak at 1618 nm is much more sensitive to the surrounding RI than that of the one at 1336.4 nm. Compared with the conventional LPFG and other types of wavelength-interrogated RI sensors, such as ring resonators, surface plasmon resonance sensors, and Fabry–Perot interferometric sensors, this novel LPFG possesses a higher sensitivity, which achieved 10,792.45 nm/RIU (RI unit) over a RI range of 1.4436–1.4489.

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Section: Introductionmentioning

confidence: 99%

An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths

Zhang

Shi

et al. 2016

Sensors

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“…A number of different strategies have been successfully applied in order to obtain feasible and reliable temperature sensing, e.g., by exploiting the temperature dependence of integrated systems and/or single elements based on fiber Bragg gratings (FBGs), long period gratings (LPGs), Fabry-Perot (FP) cavity lasers, Sagnac loops, interferometers, off-set spliced fibers, etc . [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Intrinsic FP fiber-optic temperature sensors can be obtained by employing the variation with temperature of the reflectivity exhibited by a fiber splice.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Modelling of Fiber Sensors for Low-Cost and High Sensitivity Temperature Monitoring

Scarcia

Palma

Falconi

et al. 2015

Sensors

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An accurate design of an innovative fiber optic temperature sensor is developed. The sensor is based on a cascade of three microstructured optical fibers (MOFs). In the first one a suitable cascade of long period gratings is designed into the core. A single mode intermediate and a rare-earth activated Fabry-Perot optical cavity are the other two sensor MOF sections. An exhaustive theoretic feasibility investigation is performed employing computer code. The complete set-up for temperature monitoring can be obtained by utilizing only a low cost pump diode laser at 980 nm wavelength and a commercial optical power detector. The simulated sensitivity S = 315.1 μW/°C and the operation range ΔT = 100 °C is good enough for actual applications.

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“…Arc-induced LPFGs have been characterized as a function of the variation of physical parameters such as strain and temperature [40,[66][67][68][69][70][71][72], bending and torsion [73], pressure [74,75], and external refractive index [76][77][78][79][80][81][82][83][84][85][86]. They were also exposed to gamma radiation [51].…”

Section: Fabrication and Characterization Of Arc-induced Lpfgsmentioning

confidence: 99%

Arc-Induced Long Period Fiber Gratings

Rego

2016

Journal of Sensors

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Long period fiber gratings produced by the electric arc technique have found an increasing interest by the scientific community due to their ease to fabricate, virtually enabling the inscription in any kind of fiber, low cost, and flexibility. In 2005 we have presented the first review on this subject. Since then, important achievements have been reached such as the identification of the mechanisms responsible for gratings formation, the type of symmetry, the conditions to increase fabrication reproducibility, and their inscription in the turning points with grating periods below 200 μm. Several interesting applications in the sensing area, including those sensors working in reflection, have been demonstrated and others are expected, namely, related to the monitoring of extreme temperatures, cryogenic and high temperatures, and high sensitivity refractometric sensors resulting from combining arc-induced gratings in the turning points and the deposition of thin films in the transition region. Therefore, due to its pertinence, in this paper we review the main achievements obtained concerning arc-induced long period fiber gratings, with special focus on the past ten years.

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High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings

Cited by 9 publications

References 21 publications

An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths

An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths

Electromagnetic Modelling of Fiber Sensors for Low-Cost and High Sensitivity Temperature Monitoring

Arc-Induced Long Period Fiber Gratings

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