Mini review: Recent advances in long period fiber grating biological and chemical sensors

Zhao, Xin-Wu; Wang, Qi

doi:10.1080/10739149.2018.1493499

Cited by 37 publications

(16 citation statements)

References 93 publications

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“…LPG sensors can also monitor environmental parameters related to corrosion such as pH [61,62,63,64], humidity [65,66,67,68], CO 2 [69,70,71], H 2 S [72,73], Cl − and salinity [74,75,76,77]. More details on LPG based sensors can be found in References [56,78].…”

Section: Emerging Corrosion Sensing Technologiesmentioning

confidence: 99%

Corrosion Sensors for Structural Health Monitoring of Oil and Natural Gas Infrastructure: A Review

Wright

Lü

Devkota

et al. 2019

Sensors

108

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Corrosion has been a great concern in the oil and natural gas industry costing billions of dollars annually in the U.S. The ability to monitor corrosion online before structural integrity is compromised can have a significant impact on preventing catastrophic events resulting from corrosion. This article critically reviews conventional corrosion sensors and emerging sensor technologies in terms of sensing principles, sensor designs, advantages, and limitations. Conventional corrosion sensors encompass corrosion coupons, electrical resistance probes, electrochemical sensors, ultrasonic testing sensors, magnetic flux leakage sensors, electromagnetic sensors, and in-line inspection tools. Emerging sensor technologies highlight optical fiber sensors (point, quasi-distributed, distributed) and passive wireless sensors such as passive radio-frequency identification sensors and surface acoustic wave sensors. Emerging sensors show great potential in continuous real-time in-situ monitoring of oil and natural gas infrastructure. Distributed chemical sensing is emphasized based on recent studies as a promising method to detect early corrosion onset and monitor corrosive environments for corrosion mitigation management. Additionally, challenges are discussed including durability and stability in extreme and harsh conditions such as high temperature high pressure in subsurface wellbores.

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Section: Emerging Corrosion Sensing Technologiesmentioning

confidence: 99%

Corrosion Sensors for Structural Health Monitoring of Oil and Natural Gas Infrastructure: A Review

Wright

Lü

Devkota

et al. 2019

Sensors

108

View full text Add to dashboard Cite

show abstract

“…Further, Korposh et al demonstrated optical switching utilizing FO long period grating [24]. Recently, Zhao and Wang summarized the recent advancements in the application of long period fiber grating in chemical and biological sensors [25]. However, a dielectric grating integrated fiber optic sensor needs to be explored.…”

Section: Introductionmentioning

confidence: 99%

On The Application of SiO2/SiC Grating on Ag for High-Performance Fiber Optic Plasmonic Sensing of Cortisol Concentration

2020

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This paper reports on high-accuracy simulation of a grating structure based fiber optic plasmonic sensor for salivary cortisol sensing. Gratings of SiO2 and SiC (one at a time) in combination with a thin Ag layer are considered to be in direct contact with analyte medium (solutions containing different concentrations of cortisol) considering that the groove regions are also filled with analyte. The optimization of Ag layer thickness is carried out to achieve maximum power loss (PL) corresponding to cortisol concentration variation. The variation of PL (in dB) spectra with the angle of incidence (α) is the sensing mechanism of the proposed scheme. Sensing performance is extensively analyzed in terms of sensitivity, limit-of-detection (LOD) and figure-of-merit (FOM) that incorporates both the sensitivity and the width of the corresponding PL curves. While the sensitivity and FOM values are significantly large, the results also reveal that in angular interrogation mode (AIM), an average LOD of 9.9 pg/mL and 9.8 pg/mL is obtained for SiO2 and SiC-based sensor designs, respectively. When the intensity interrogation method (IIM) in place of AIM is considered, an average LOD of 22.6 fg/mL and 68.17 fg/mL is obtained for SiO2 and SiC-based sensor designs, respectively. LOD (with IIM, in particular) is considerably better than the present-state-of-art related to cortisol monitoring. Pragmatic model for possible practical implementation of sensor scheme is also discussed. The involvement of optical fiber in the proposed sensor design makes it possible to implement it as a flexible sensor or for wearable solution for cortisol detection via sweat monitoring as well as for measuring cortisol level in aquaculture tanks where concentration levels are much lower than 10 ng/mL.

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“…This modal coupling results in multi rejection bands in the optical transmission, in which their resonant central wavelengths depend on the phase-matching condition [ 1 ]. The rejection bands in LPFGs have found applications in telecommunications, sensing, and optical fiber lasers [ 2 , 3 , 4 ]. Since the end of the 90s, to date, many techniques have been reported in the LPFGs inscription, such as UV, CO 2 , femtosecond irradiation, electric arc, and mechanically-induced between other methods [ 1 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanically-Induced Long-Period Fiber Gratings Using Laminated Plates

Torres-Gómez

Ceballos-Herrera

Salas-Alcántara

2020

Sensors

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This work presents a formation method of mechanically-induced long-period fiber gratings using laminated plates. The mechanically-induced long-period fiber grating is temporarily inscribed by compressing the optical fiber between a flat plate and the proposed laminated plate. In turn, the new laminated plate consists of a parallel assembling of single-edged utility blades. We present the experimental characterization of mechanically-induced long-period fiber gratings while employing three laminated plates with a period of 480 ± 20 µm and low duty cycles. These mechanically-induced long-period fiber gratings display a leading rejection band (>15 dB) with a couple of shallow rejection bands (<2 dB) in the range of 1100–1700 nm. This spectral behavior is due to the new mechanical fabrication process that is based on laminated plates that we have proposed, which consists of piling multiple blades with trapezoidal edges that are polished with different levels to obtain different duty-cycles. With the proposed method, we can obtain values of duty-cycles around 10%, much lower than those obtained using traditional methods. Additionally, with this new method, the required mechanical pressure to form the grating is remarkably reduced, which minimizes the probability of the optical fiber failure in the mechanically-induced long-period fiber gratings (MI-LPFGs). Moreover, the proposed mechanically-induced long-period fiber gratings with a single rejection band open the feasibility to implement coarse wavelength division multiplexing systems that are based on long-period fiber gratings.

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Mini review: Recent advances in long period fiber grating biological and chemical sensors

Cited by 37 publications

References 93 publications

Corrosion Sensors for Structural Health Monitoring of Oil and Natural Gas Infrastructure: A Review

Corrosion Sensors for Structural Health Monitoring of Oil and Natural Gas Infrastructure: A Review

On The Application of SiO2/SiC Grating on Ag for High-Performance Fiber Optic Plasmonic Sensing of Cortisol Concentration

Mechanically-Induced Long-Period Fiber Gratings Using Laminated Plates

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