Microstructured FBG hydrogen sensor based on Pt-loaded WO_3

Zhou, Xiuqing; Dai, Yutang; Karanja, Joseph Muna; Liu, Fufei; Yang, Minghong

doi:10.1364/oe.25.008777

Cited by 22 publications

(15 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lowest detection limit of the sensor could be achieved at 0.2% concentration, and the reversibility in colouration and recovery was demonstrated over 20 times with repeated exposures to hydrogen and air. [136]. The grating structure was processed using a fermto second (fs) laser with a wavelength of 780 nm, a pulse duration of 180 fs and a repetition rate of 1 kHz.…”

Section: Metal Oxide Semiconductor-based Hydrogen Gas Sensorsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors

et al. 2021

View full text Add to dashboard Cite

Safety is a crucial issue in hydrogen energy applications due to the unique properties of hydrogen. Accordingly, a suitable hydrogen sensor for leakage detection must have at least high sensitivity and selectivity, rapid response/recovery, low power consumption and stable functionality, which requires further improvements on the available hydrogen sensors. In recent years, the mature development of nanomaterials engineering technologies, which facilitate the synthesis and modification of various materials, has opened up many possibilities for improving hydrogen sensing performance. Current research of hydrogen detection sensors based on both conservational and innovative materials are introduced in this review. This work mainly focuses on three material categories, i.e., transition metals, metal oxide semiconductors, and graphene and its derivatives. Different hydrogen sensing mechanisms, such as resistive, capacitive, optical and surface acoustic wave-based sensors, are also presented, and their sensing performances and influence based on different nanostructures and material combinations are compared and discussed, respectively. This review is concluded with a brief outlook and future development trends.

show abstract

Section: Metal Oxide Semiconductor-based Hydrogen Gas Sensorsmentioning

confidence: 99%

“…Copyright (2021), with permission from Elsevier. Zhou et al investigated an optical fibre Bragg grating (FBG) hydrogen sensor based on Pt-loaded WO3 in 2017, as shown in Figure 32[136]. The grating structure was processed using a fermto second (fs) laser with a wavelength of 780 nm, a pulse duration of 180 fs and a repetition rate of 1 kHz.…”

mentioning

confidence: 99%

Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Photonic based sensors find nowadays a wide range of applications. Acoustic and ultrasound sensors [1,2], pressure sensors [3], biochemical and gas sensors [4,5] are examples of sensors based on optical technology. They are low cost, immune to electromagnetic radiation, and operate under a wide range of temperatures.…”

Section: On-chip Interrogator Based On Fourier Transform Spectroscopymentioning

confidence: 99%

“…In this paper, we focus our attention on photonic sensors whose transmission or reflection spectra have a peak (or dip) in their lineshape. Examples are sensors based on fiber Bragg gratings (FBGs) [5,6] or on integrated ring resonators [1,2,4]. For these sensors, it is possible to build large and multi-purpose sensor arrays by wavelength multiplexing the spectrum of the sensors [6,7].…”

Section: On-chip Interrogator Based On Fourier Transform Spectroscopymentioning

confidence: 99%

On-chip interrogator based on Fourier transform spectroscopy

Peternella¹,

Esselink²,

Dorsman³

et al. 2019

Opt. Express

View full text Add to dashboard Cite

In this paper, the design and the characterization of a novel interrogator based on integrated Fourier transform (FT) spectroscopy is presented. To the best of our knowledge, this is the first integrated FT spectrometer used for the interrogation of photonic sensors. It consists of a planar spatial heterodyne spectrometer, which is implemented using an array of Mach-Zehnder interferometers (MZIs) with different optical path differences. Each MZI employs a 3×3 multi-mode interferometer, allowing the retrieval of the complex Fourier coefficients. We derive a system of non-linear equations whose solution, which is obtained numerically from Newton's method, gives the modulation of the sensor's resonances as a function of time. By taking one of the sensors as a reference, to which no external excitation is applied and its temperature is kept constant, about 92% of the thermal induced phase drift of the integrated MZIs has been compensated. The minimum modulation amplitude that is obtained experimentally is 400 fm, which is more than two orders of magnitude smaller than the FT spectrometer resolution.

show abstract

“…X. Zhou et al wrote a spiral trench on the surface of an SMF and wrote an FBG in the fiber, and then Pt-WO 3 films, sensitive to hydrogen, were modified on the surface of the fiber. As a result, a hydrogen concentration from 0.02% to 4% at room temperature could be detected within a response time of 10~30 s [ 70 ].…”

Section: Applicationsmentioning

confidence: 99%

Optofluidics in Microstructured Optical Fibers

Shao

Liu

et al. 2018

Micromachines

View full text Add to dashboard Cite

In this paper, we review the development and applications of optofluidics investigated based on the platform of microstructured optical fibers (MOFs) that have miniature air channels along the light propagating direction. The flexibility of the customizable air channels of MOFs provides enough space to implement light-matter interaction, as fluids and light can be guided simultaneously along a single strand of fiber. Different techniques employed to achieve the fluidic inlet/outlet as well as different applications for biochemical analysis are presented. This kind of miniature platform based on MOFs is easy to fabricate, free of lithography, and only needs a tiny volume of the sample. Compared to optofluidics on the chip, no additional waveguide is necessary to guide the light since the core is already designed in MOFs. The measurements of flow rate, refractive index of the filled fluids, and chemical reactions can be carried out based on this platform. Furthermore, it can also demonstrate some physical phenomena. Such devices show good potential and prospects for applications in bio-detection as well as material analysis.

show abstract

Microstructured FBG hydrogen sensor based on Pt-loaded WO_3

Cited by 22 publications

References 27 publications

Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors

Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors

On-chip interrogator based on Fourier transform spectroscopy

Optofluidics in Microstructured Optical Fibers

Contact Info

Product

Resources

About