Fiber-optic multi-sensor array for detection of low concentration volatile organic compounds

Khan, Md. Rajibur Rahaman; Kang, Byoung‐Ho; Lee, Sang‐Won; Kim, Su-Hwan; Yeom, Se-Hyuk; Lee, Seung-Ha; Kang, Shin‐Won

doi:10.1364/oe.21.020119

Cited by 40 publications

(26 citation statements)

References 29 publications

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“…Figure 6 shows the variation in resonance wavelength shift after acetic acid gas exposure, and the saturation and recovery characteristics of the sensor. We compared the performance of the proposed detection system with that of similar detection systems [14,16,30–32]. Among these methods, the response and recovery times reported in [16] were less than 30 s, whereas in our proposed detection system, the response and recovery times were less than 10 s. The comparison of analytical performance of similar detection systems is given in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Further, we adopted a multi-sensor array based on the pulse-width modulation principle to detect various VOC gases. The pulse-width of the signal received from the optical-fiber waveguide depends on the absorption of the evanescent field by the gas on the polished cladding region [16,17]. The proposed sensing system has a wide dynamic range but is a very complex system with long response and recovery times.…”

Section: Introductionmentioning

confidence: 99%

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Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds

Lee

Yoon

Kang

et al. 2014

Sensors

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We have developed a multi-array side-polished optical-fiber gas sensor for the detection of volatile organic compound (VOC) gases. The side-polished optical-fiber coupled with a polymer planar waveguide (PWG) provides high sensitivity to alterations in refractive index. The PWG was fabricated by coating a solvatochromic dye with poly(vinylpyrrolidone). To confirm the effectiveness of the sensor, five different sensing membranes were fabricated by coating the side-polished optical-fiber using the solvatochromic dyes Reinhardt's dye, Nile red, 4-aminophthalimide, 4-amino-N-methylphthalimide, and 4-(dimethylamino)cinnamaldehyde, which have different polarities that cause changes in the effective refractive index of the sensing membrane owing to evanescent field coupling. The fabricated gas detection system was tested with five types of VOC gases, namely acetic acid, benzene, dimethylamine, ethanol, and toluene at concentrations of 1, 2,…,10 ppb. Second-regression and principal component analyses showed that the response properties of the proposed VOC gas sensor were linearly shifted bathochromically, and each gas showed different response characteristics.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds

Lee

Yoon

Kang

et al. 2014

Sensors

Self Cite

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“…In MEMS sensors, this is generally either deflection or change in oscillating frequency of a polymer-coated microcantilever. Finally, optical sensors include those based on materials in which analyte vapor induces a change in the way light is absorbed, emitted, or refracted by the sensing material (22)(23)(24)(25)(26)(27)(28)(29)(30). These include sensors based on vapochromic dyes (24)(25)(26)(27), fluorescence (28,29), chemiluminescence (30,31), and surface plasmon resonance (32, 33).…”

Section: Sensor Typesmentioning

confidence: 99%

Sensor Array Design for Complex Sensing Tasks

Johnson

Rose-Pehrsson²

2015

Annual Rev. Anal. Chem.

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Chemical detection in complex environments presents numerous challenges for successful implementation. Arrays of sensors are often implemented for complex chemical sensing tasks, but systematic understanding of how individual sensor response characteristics contribute overall detection system performance remains elusive, with generalized strategies for design and optimization of these arrays rarely reported and even less commonly adopted by practitioners. This review focuses on the literature of nonspecific sensor array design and optimization strategies as well as related work that may inform future efforts in complex sensing with arrays.

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“…A band-pass filter had been developed by coupling double long-period fiber gratings (LPG) with a core mode blocker or a hollow fiber [35,36,37]. Different optical fiber sensing devices for detecting different variables have been developed, such as displacement sensors, strain sensors, pressure sensors and volatile organic compound gas sensors [38,39,40,41,42,43]. …”

Section: Introductionmentioning

confidence: 99%

A Portable Array-Type Optical Fiber Sensing Instrument for Real-Time Gas Detection

Hung

Chang

2016

Sensors

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A novel optical fiber array-type of sensing instrument with temperature compensation for real-time detection was developed to measure oxygen, carbon dioxide, and ammonia simultaneously. The proposed instrument is multi-sensing array integrated with real-time measurement module for portable applications. The sensing optical fibers were etched and polished before coating to increase sensitivities. The ammonia and temperature sensors were each composed of a dye-coated single-mode fiber with constructing a fiber Bragg grating and a long-period filter grating for detecting light intensity. Both carbon dioxide and oxygen sensing structures use multimode fibers where 1-hydroxy-3,6,8-pyrene trisulfonic acid trisodium salt is coated for carbon dioxide sensing and Tris(2,2′-bipyridyl) dichlororuthenium(II) hexahydrate and Tris(bipyridine)ruthenium(II) chloride are coated for oxygen sensing. Gas-induced fluorescent light intensity variation was applied to detect gas concentration. The portable gas sensing array was set up by integrating with photo-electronic measurement modules and a human-machine interface to detect gases in real time. The measured data have been processed using piecewise-linear method. The sensitivity of the oxygen sensor were 1.54%/V and 9.62%/V for concentrations less than 1.5% and for concentrations between 1.5% and 6%, respectively. The sensitivity of the carbon dioxide sensor were 8.33%/V and 9.62%/V for concentrations less than 2% and for concentrations between 2% and 5%, respectively. For the ammonia sensor, the sensitivity was 27.78%/V, while ammonia concentration was less than 2%.

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Fiber-optic multi-sensor array for detection of low concentration volatile organic compounds

Cited by 40 publications

References 29 publications

Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds

Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds

Sensor Array Design for Complex Sensing Tasks

A Portable Array-Type Optical Fiber Sensing Instrument for Real-Time Gas Detection

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