Multi-component optical sensing of high temperature gas streams using functional oxide integrated silica based optical fiber sensors

Yan, Miaolei; Tylczak, Joseph; Yu, Yang; Panagakos, Grigorios; Ohodnicki, Paul R.

doi:10.1016/j.snb.2017.08.026

Cited by 31 publications

(21 citation statements)

References 19 publications

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“…24, conventional silica fibers can be effectively utilized within a temperature range from room temperature to 500 °C. When the working temperature exceeds 500 °C, the silica fibers are susceptible to water and hydrogen in the surrounding environment and show embrittlement [69]. In such environments researchers need to use a refractory coating to protect the fiber.…”

Section: Single Crystal Fiber Sensormentioning

confidence: 99%

Single Crystal Fibers: Diversified Functional Crystal Material

Wang

Zhang

et al. 2019

Adv. Fiber Mater.

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Single crystal fibers (SCF) are considered to be a combination of bulk crystals and conventional fibers, thereby possessing the stable physical and chemical properties accompanied with excellent waveguide properties. This paper gives a detailed introduction to the development history of single crystal fibers, including the evolution of the growth technique and the optimization of the growth process. Laser-heated pedestal growth (LHPG) and Micro-pulling-down (μ-PD) methods are considered to be the most widely used growth techniques for growing single crystal fibers, and the advantages of the two methods are also introduced in detail. The second part of this paper describes the characterization of single crystal fibers, including diameter fluctuation, crystal quality and optical losses. A series of cladding approaches for SCF, such as magnetron sputtering, sol-gel, liquid phase epitaxy, co-drawing LHPG, ion implantation and micro-structure cladding will be reviewed. In addition, the research status of single crystal fiber laser and single crystal fiber sensor are also summarized in view of the current research foundation.

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Section: Single Crystal Fiber Sensormentioning

confidence: 99%

Single Crystal Fibers: Diversified Functional Crystal Material

Wang

Zhang

et al. 2019

Adv. Fiber Mater.

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“…As reported by Yan et al, Fig. 2 shows the schematic diagram of the optical sensor operated at a high temperature [61] , where the sensor still functioned in a harsh environment. Limited reports can be found which present room temperature and high temperature gas sensing for toxic gas species [62][63][64] .…”

Section: Optical Gas Sensorsmentioning

confidence: 86%

“…(LSTO) oxide thin film that is coated on silica optical fiber sensor operated at 800°C [61] . To determine the gas selectivity, sixteen different gas exposure conditions have been used which include four target gas species (H2, CO2, CO, and CH4) each at four flow rates.…”

Section: Optical Gas Sensormentioning

confidence: 99%

High‐Temperature Gas Sensors for Harsh Environment Applications: A Review

Ghosh

Zhang

Hai-feng

2019

CLEAN Soil Air Water

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This review paper introduces various types of gas sensors operating at high temperatures and their mechanisms, which can provide solutions to gas sensor selection for harsh environment application. Most of the gas sensors are found to be functioning at moderate operating temperatures (<400°C) and only a few reports are available, which highlight gas-sensing performance above 400°C. Therefore, the selection of a more reliable high-temperature gas sensor is necessary and advantageous for applications in areas such as agricultural waste processes (such as pyrolysis processes), military facilities, nuclear power plants, and automobile industries. In this paper, three major parts have been conducted to address the importance of high-temperature gas sensors and provide strategical solution for gas sensor selection. First, we have highlighted the application scenario and the sensing mechanism of various gas sensors operating at high temperature. Additionally, factors that affect sensing performance at moderate operating temperature have been investigated. Secondly, we have discussed the effect of material compositions, morphology of the nanostructures, and the use of dopants on sensing performance of high temperature gas sensors. Meanwhile, the catalytic nature of the sensing layer and temperature effect on chemisorption in oxide-based sensors have been discussed meticulously. Lastly, future challenges including factors affecting various sensor performance, selection, and preparation of sensing materials operating at higher temperatures are explored systematically.

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“…They can provide good reliability because of their immunity to electromagnetic interferences and their explosion-proof structures that have no electrical contacts. Optical hydrogen sensors using optical fibers and nanostructures have been developed [15][16][17][18][19], and hydrogen gas with a concentration as low as 0.1 vol% has been detected [2].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Highly Sensitive Hydrogen Sensor Based on Pt-WO3/Si Microring Resonator

Matsuura

Yamasaku

Nishijima

et al. 2019

Sensors

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Hydrogen gas has attracted attention as a new energy carrier, and simple but highly sensitive hydrogen sensors are required. We fabricated an optical hydrogen sensor based on a silicon microring resonator (MRR) with tungsten oxide (WO 3 ) using a complementary metal-oxide-semiconductor (CMOS)-compatible process for the MRR and a sol-gel method for the WO 3 layer and investigated its sensing characteristics at device temperatures of 5, 20, and 30 • C. At each temperature, a hydrogen concentration of as low as 0.1 vol% was successfully detected. The gas sensitivity increased with decreasing temperature. The dependence of the sensitivity on the device temperature can be attributed to the thickness of tungsten bronze (H x WO 3 ) formed by WO 3 during exposure to hydrogen gas. In addition, a hydrogen gas sensor based on a silicon-MRR-enhanced Mach-Zehnder interferometer (MRR-MZI) is proposed and its significantly high sensing ability using improved changes in the transmittance of light is theoretically discussed.

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Multi-component optical sensing of high temperature gas streams using functional oxide integrated silica based optical fiber sensors

Cited by 31 publications

References 19 publications

Single Crystal Fibers: Diversified Functional Crystal Material

Single Crystal Fibers: Diversified Functional Crystal Material

High‐Temperature Gas Sensors for Harsh Environment Applications: A Review

Characteristics of Highly Sensitive Hydrogen Sensor Based on Pt-WO3/Si Microring Resonator

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