Hollow core fiber-assisted absorption spectroscopy of methane at 34 µm

Nikodem, Michał; Krzempek, Karol; Dudzik, Grzegorz; Abramski, Krzysztof M.

doi:10.1364/oe.26.021843

Cited by 51 publications

(27 citation statements)

References 20 publications

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“…Hollow core fibers (HCF) have attracted much attention from researchers working on laser-based gas sensors [34]. Numerous experiments were published demonstrating the usefulness of such structures in gas sensors [34][35][36][37][38][39][40]. The problem of achieving reasonable PTS sensor performance was investigated by several Groups worldwide.…”

Section: Pts In Hollow-core Fibersmentioning

confidence: 99%

A Review of Photothermal Detection Techniques for Gas Sensing Applications

Krzempek

2019

Applied Sciences

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Photothermal spectroscopy (PTS) is a technique used for determining the composition of liquids, solids and gases. In PTS, the sample is illuminated with a radiation source, and the thermal response of the analyte (e.g., refractive index) is analyzed to gain information about its content. Recent advances in this unique method of detecting gaseous samples show that photothermal gas spectroscopy can be an interesting alternative to commonly used absorption techniques. Moreover, if designed properly, sensors using PTS detection technique can not only reach sensitivities comparable with other, more complex techniques, but can significantly simplify the design of the sensor. In this review, recent developments in photothermal spectroscopy of gases will be summarized and discussed.

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Section: Pts In Hollow-core Fibersmentioning

confidence: 99%

A Review of Photothermal Detection Techniques for Gas Sensing Applications

Krzempek

2019

Applied Sciences

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“…Therefore, optics-free and low-loss light coupling into the HC-PBGF-based absorption cells is obtainable [22]. Another type of HCFs, the so-called hypocycloid core Kagome fiber has been recently used as an absorption cell to target methane transitions in the Mid-Infrared region [23,24]. The proposed Kagome-fiber-based gas sensor utilized the Wavelength Modulation Spectroscopy (WMS) technique and was characterized by significantly better detection limit (at sub-parts-per-million by volume level) in comparison with similar configurations based on the HC-PBGFs [23].…”

Section: Introductionmentioning

confidence: 99%

“…Another type of HCFs, the so-called hypocycloid core Kagome fiber has been recently used as an absorption cell to target methane transitions in the Mid-Infrared region [23,24]. The proposed Kagome-fiber-based gas sensor utilized the Wavelength Modulation Spectroscopy (WMS) technique and was characterized by significantly better detection limit (at sub-parts-per-million by volume level) in comparison with similar configurations based on the HC-PBGFs [23]. However, as the fiber supported transmission of the higher order modes, CLaDS approach had to be used in order to minimize their impact and reach the maximum detection capacity of the sensor [24].…”

Section: Introductionmentioning

confidence: 99%

Antiresonant Hollow-Core Fiber-Based Dual Gas Sensor for Detection of Methane and Carbon Dioxide in the Near- and Mid-Infrared Regions

Jaworski

Kozioł

Krzempek

et al. 2020

Sensors

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In this work, we present for the first time a laser-based dual gas sensor utilizing a silica-based Antiresonant Hollow-Core Fiber (ARHCF) operating in the Near- and Mid-Infrared spectral region. A 1-m-long fiber with an 84-µm diameter air-core was implemented as a low-volume absorption cell in a sensor configuration utilizing the simple and well-known Wavelength Modulation Spectroscopy (WMS) method. The fiber was filled with a mixture of methane (CH4) and carbon dioxide (CO2), and a simultaneous detection of both gases was demonstrated targeting their transitions at 3.334 µm and 1.574 µm, respectively. Due to excellent guidance properties of the fiber and low background noise, the proposed sensor reached a detection limit down to 24 parts-per-billion by volume for CH4 and 144 parts-per-million by volume for CO2. The obtained results confirm the suitability of ARHCF for efficient use in gas sensing applications for over a broad spectral range. Thanks to the demonstrated low loss, such fibers with lengths of over one meter can be used for increasing the laser-gas molecules interaction path, substituting bulk optics-based multipass cells, while delivering required flexibility, compactness, reliability and enhancement in the sensor’s sensitivity.

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“…Over twenty years have passed since Cregan et al presented the first hollow-core optical fiber (HCF) with a microstructured cladding [1]. Remarkable optical features of HCFs [2][3][4] have resulted in their extensive experimental use, for example in telecommunications [5][6][7], gas and liquid spectroscopy [8][9][10][11][12][13], supercontinuum generation [14,15], high power optical beam delivery [16][17][18], transmission in the spectral regions unavailable for conventional fibers [19][20][21][22], biomedical applications [23,24], and many others. Although the overall scientific reach of both types of HCFs-namely hollow-core photonic bandgap and hollow-core antiresonant optical fibers (HC-PBFs and HC-ARFs, respectively)-has vastly exceeded that of conventional, step index fibers, their full potential is still to be discovered.…”

Section: Introductionmentioning

confidence: 99%

A Dual Hollow Core Antiresonant Optical Fiber Coupler Based on a Highly Birefringent Structure-Numerical Design and Analysis

Stawska

Popenda

2019

Fibers

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With the growing interest in hollow-core antiresonant fibers (HC-ARF), attributed to the development of their fabrication technology, the appearance of more sophisticated structures is understandable. One of the recently advancing concepts is that of dual hollow-core antiresonant fibers, which have the potential to be used as optical fiber couplers. In the following paper, a design of a dual hollow-core antiresonant fiber (DHC-ARF) acting as a polarization fiber coupler is presented. The structure is based on a highly birefringent hollow-core fiber design, which is proven to be a promising solution for the purpose of propagation of polarized signals. The design of an optimized DHC-ARF with asymmetrical cores is proposed, together with analysis of its essential coupling parameters, such as the extinction ratio, coupling length ratio, and coupling strength. The latter two for the x- and y-polarized signals were ~2 and 1, respectively, while the optical losses were below 0.3 dB/cm in the 1500–1700 nm transmission band.

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Hollow core fiber-assisted absorption spectroscopy of methane at 34 µm

Cited by 51 publications

References 20 publications

A Review of Photothermal Detection Techniques for Gas Sensing Applications

A Review of Photothermal Detection Techniques for Gas Sensing Applications

Antiresonant Hollow-Core Fiber-Based Dual Gas Sensor for Detection of Methane and Carbon Dioxide in the Near- and Mid-Infrared Regions

A Dual Hollow Core Antiresonant Optical Fiber Coupler Based on a Highly Birefringent Structure-Numerical Design and Analysis

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