High-Temperature Resistance Fiber Bragg Grating Temperature Sensor Fabrication

Zhang, Bowei; Kahrizi, Mojtaba

doi:10.1109/jsen.2007.891941

Cited by 259 publications

(121 citation statements)

References 13 publications

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“…It should be pointed out that the erasing temperature for the optical modifications in sapphire reported in this paper ͑Ͼ1000°C͒ is similar to the erasing temperature previously reported for other optical devices fabricated by the ultrafast laser radiation such as hightemperature stable fiber Bragg gratings in fibers. [33][34][35][36] This paper provides circumstantial evidence that the universal photosensitivity response induced by the ultrafast laser could share common mechanisms.…”

Section: B Thermal Resistance Of Waveguidingmentioning

confidence: 85%

Thermal stability of microstructural and optical modifications induced in sapphire by ultrafast laser filamentation

Benayas

Jaque

McMillen

et al. 2010

Journal of Applied Physics

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We report on the thermal stability of both structural and optical micromodifications created by ultrafast laser written filaments in sapphire crystals. By using the Cr 3+ traces as optical probes, we have concluded that the filaments are constituted by both reversible and nonreversible defects with very different spatial locations. The strain field measured from the analysis of R lines has been found to be erased at the same time when the reversible centers are recombined ͑ϳ1100°C͒. This fact seems to indicate that these defects act as pinning centers for the induced stress. Furthermore, we have found that the waveguide generated in the proximity of the filament disappear for annealing temperatures above 1100°C. This clearly supports the assumption that waveguiding is produced by the strain stress induced refractive index increment based on the dominant electronic polarizability enhancement.

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Section: B Thermal Resistance Of Waveguidingmentioning

confidence: 85%

Thermal stability of microstructural and optical modifications induced in sapphire by ultrafast laser filamentation

Benayas

Jaque

McMillen

et al. 2010

Journal of Applied Physics

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“…The FBG is an ideal sensor for the temperature measurement due to its advantages such as wavelength coding, wavelength modulation, and intrinsic property. 4 However, the FBG sensor performs poor stability in the hightemperature environment and the grating would be erased completely when the temperature exceeds 300…”

Section: Introductionmentioning

confidence: 99%

High-temperature fiber-optic Fabry-Perot interferometric sensors

Ding

Jiang

Liu

2015

Review of Scientific Instruments

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A photonic crystal fiber (PCF) based high-temperature fiber-optic sensor is proposed and experimentally demonstrated. The sensor head is a Fabry-Perot cavity manufactured with a short section of endless single-mode photonic crystal fiber (ESM PCF). The interferometric spectrum of the Fabry-Perot interferometer is collected by a charge coupled device linear array based micro spectrometer. A high-resolution demodulation algorithm is used to interrogate the peak wavelengths. Experimental results show that the temperature range of 1200• C and the temperature resolution of 1• C are achieved. C 2015 AIP Publishing LLC.[http://dx

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“…But further optimization of grating linewidth and suppression of the strong laser-induced birefringence are needed to allow better pressure sensing range and accuracy. The relatively large in-line loss with Type II permanent damage also limits sensor multiplexing.Recently, a new type of high-temperature FBG was reported, in which grating structures are regenerated after the Type I seed gratings are erased during a hightemperature annealing process [6][7][8][9][10]. Unlike chemical composition gratings, it has been shown that the regeneration process is independent from dopants in fiber cores [8] and photosensitization processes, such as hydrogen loading [10].…”

mentioning

confidence: 99%

Regenerated gratings in air-hole microstructured fibers for high-temperature pressure sensing

Chen

Jewart

et al. 2011

Opt. Lett.

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We present thermally regenerated fiber Bragg gratings in air-hole microstructured fibers for high-temperature, hydrostatic pressure measurements. High-temperature stable gratings were regenerated during an 800°C annealing process from hydrogen-loaded Type I seed gratings. The wavelength shifts and separation of grating peaks were studied as functions of external hydrostatic pressure from 15 to 2400 psi, and temperature from 24°C to 800°C. This Letter demonstrates a multiplexible pressure and temperature sensor technology for high-temperature environments using a single optical fiber feedthrough. © 2011 Optical Society of America OCIS codes: 060.2370, 060.4005, 120.5475, 120.6780. Sensors that operate at high temperatures are needed for a wide range of applications in the energy, automobile, and aerospace industries. For example, fast, accurate, and reliable interrogation of gas pressure information ensures safe and efficient operations of gas turbine, coal boilers, and power plants, where the operating temperatures range from 400°C to more than 1000°C. Optical fiber sensors have always been considered good candidates for harsh environment applications. A single Fabry-Perot interferometer implemented on a fiber tip can perform pressure or temperature sensing beyondCompared with fiber interferometer sensors, fiber Bragg gratings (FBGs) offer greater multiplexing capability [2], and continuous efforts have been made to improve the operating temperature of FBGs. These may involve modifying the chemical composition of the fiber core [3], and using an ultrafast laser to form a Type II damaged grating [4]. Previously, we reported a high-temperature pressure fiber sensor in which the grating was inscribed in an air-hole microstructure fiber with an ultrafast laser [5]. The Type II FBG shows stable and reproducible pressure sensing operation over 800°C. But further optimization of grating linewidth and suppression of the strong laser-induced birefringence are needed to allow better pressure sensing range and accuracy. The relatively large in-line loss with Type II permanent damage also limits sensor multiplexing.Recently, a new type of high-temperature FBG was reported, in which grating structures are regenerated after the Type I seed gratings are erased during a hightemperature annealing process [6][7][8][9][10]. Unlike chemical composition gratings, it has been shown that the regeneration process is independent from dopants in fiber cores [8] and photosensitization processes, such as hydrogen loading [10]. This versatility opens up hightemperature stabilization to other material systems and allows postregeneration of unloaded gratings, including arrays of online draw tower gratings [10]. By carefully controlling the strength of the seed grating and annealing procedures, high-temperature gratings with ∼35% reflectivity and narrow linewidth can be regenerated [7]. Stable operating temperature up to 1295°C was reported for regenerative gratings [8]. The ultrahigh temperature stability, good grating qualities, and rela...

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High-Temperature Resistance Fiber Bragg Grating Temperature Sensor Fabrication

Cited by 259 publications

References 13 publications

Thermal stability of microstructural and optical modifications induced in sapphire by ultrafast laser filamentation

Thermal stability of microstructural and optical modifications induced in sapphire by ultrafast laser filamentation

High-temperature fiber-optic Fabry-Perot interferometric sensors

Regenerated gratings in air-hole microstructured fibers for high-temperature pressure sensing

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