Fully Distributed Fiber-Optic Hydrogen Sensing Using Acoustically Induced Long-Period Grating

Wang, Dorothy Y.; Wang, Yunmiao; Gong, Jianghong; Wang, Anbo

doi:10.1109/lpt.2011.2131644

Cited by 17 publications

(11 citation statements)

References 11 publications

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“…Sumida et al [133] demonstrated distributed measurement of hydrogen with multimode optical fibers coated with platinumsupported tungsten trioxide (Pt/WO 3 ) film as hydrogen sensitive cladding and optical time domain reflectomotry (OTDR) to determine the spatial location. Wang et al [134] reported distributed hydrogen sensing based on an acoustically induced transient and traveling long periodic grating in a platinum coated SMF. These sensors rely on particular coating materials and a truly distributed sensor based on gas absorption has not been reported to our knowledge, probably due to the lack of suitable waveguides.…”

Section: Distributed Gas Detection With Optical Fibersmentioning

confidence: 99%

Gas detection with micro- and nano-engineered optical fibers

Jin

Cao

et al. 2013

Optical Fiber Technology

138

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a b s t r a c tThis paper overviews recent development in gas detection with micro-and nano-engineered optical fibers, including hollow-core fibers, suspended-core fibers, tapered optical micro/nano fibers, and fiber-tip micro-cavities. Both direct absorption and photoacoustic spectroscopy based detection schemes are discussed. Emphasis is placed on post-processing stock optical fibers to achieve better system performance. Our recent demonstration of distributed methane detection with a $75-m long of hollow-core photonic bandgap fiber is also reported.

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Section: Distributed Gas Detection With Optical Fibersmentioning

confidence: 99%

Gas detection with micro- and nano-engineered optical fibers

Jin

Cao

et al. 2013

Optical Fiber Technology

138

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“…One of the most important benefits offered by optical fiber sensors is the distributed sensing capability. Several experiments on distributed hydrogen detection with thin film coatings were conducted [9][10][11]. Sumida et al reported multi-point hydrogen detection based on evanescent field absorption of a Pt/WO3 coated fiber by use of optical time domain reflectometry (OTDR) [9].…”

Section: Introductionmentioning

confidence: 99%

Towards label-free distributed fiber hydrogen sensor with stimulated Raman spectroscopy

Yang¹,

Zhao²,

Qi³

et al. 2019

Opt. Express

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Hydrogen detection is of great importance in chemical and energy industries. Optical fiber hydrogen sensors show flexibility and compactness, and have potential for distributed analysis. However, traditional fiber sensors encounter a challenge for light to interact with hydrogen directly since hydrogen only display weak quadrupole absorption, and metallic palladium and platinum thin-film coatings are typically used as an optically detectable label. Here, based on stimulated Raman spectroscopy in hollow-core photonic crystal fibers, we investigate the label-free optical fiber distributed hydrogen sensors operating in the optical telecommunication band. The approach of distributed Raman measurement represents a new paradigm in fiber sensors, potentially allowing distributed chemical analysis in gas or liquid phase with high sensitivity and selectivity.

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“…These merits make DFS an attractive candidate for distributed hydrogen sensing. Several DFS systems for hydrogen detection have been reported [2][3][4], however, their performance is limited. In [2], the sensitivity is relatively low since the system is based on the loss of the pulse; in [3,4] the sensing range are very limited because of the large loss of the acoustic wave propagating along the fiber [3] and the coherence of the laser [4].…”

Section: Introductionmentioning

confidence: 99%

“…Several DFS systems for hydrogen detection have been reported [2][3][4], however, their performance is limited. In [2], the sensitivity is relatively low since the system is based on the loss of the pulse; in [3,4] the sensing range are very limited because of the large loss of the acoustic wave propagating along the fiber [3] and the coherence of the laser [4]. On the other hand, as one of the most promising DFS techniques, phase-sensitive OTDR (ϕ-OTDR), which exploits the interferences created by coherent Rayleigh backscattering, has demonstrated its capability for long range sensing due to its ultra-high sensitivity, and its low requirement on the coherence length of the laser [5][6].…”

Section: Introductionmentioning

confidence: 99%