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Fiber-Coupled Substrate-Integrated Hollow Waveguides: An Innovative Approach to Mid-infrared Remote Gas Sensors

Journal Article · · ACS Sensors
Here, in this study, an innovative approach based on fiberoptically coupled substrate-integrated hollow waveguide (iHWG) gas cells for the analysis of low sample volumes suitable for remote broad- and narrow-band mid-infrared (MIR; 2.5–20 μm) sensing applications is reported. The feasibility of remotely addressing iHWG gas cells, configured in a double-pass geometry via a reflector, by direct coupling to a 7-around-1 mid-infrared fiber bundle is demonstrated, facilitating low-level hydrocarbon gas analysis. For comparison studies, two iHWGs with substrate dimensions of 50 × 50 × 12 mm (L × W × H) and geometric channel lengths of 138 and 58.5 mm, serving as miniature light-guiding gas cells, were fiber-coupled to a Fourier transform infrared spectrometer enabling broadband MIR sensing. In addition to the fundamental feasibility of this concept, the achievable sensitivity toward several gaseous hydrocarbons and the reproducibility of assembling the fiber-iHWG interface were investigated.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1900325
Report Number(s):
LLNL-JRNL-730404; 880944
Journal Information:
ACS Sensors, Journal Name: ACS Sensors Journal Issue: 9 Vol. 2; ISSN 2379-3694
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (22)

Toward the quantification of the 13CO2/12CO2 ratio in exhaled mouse breath with mid-infrared hollow waveguide gas sensors journal November 2011
Multivariate determination of 13CO2/12CO2 ratios in exhaled mouse breath with mid-infrared hollow waveguide gas sensors journal March 2013
Research progress in the key device and technology for fiber optic sensor network journal January 2016
Loss reduction of dielectric-coated metallic hollow waveguides for CO2 laser light transmission journal April 1990
Application in Coal Mine of Fiber Methane Monitoring System Based on Spectrum Absorption journal January 2011
Infrared Hollow Waveguide Sensors for Simultaneous Gas Phase Detection of Benzene, Toluene, and Xylenes in Field Environments journal August 2011
Breath Analysis with Broadly Tunable Quantum Cascade Lasers journal February 2013
Substrate-Integrated Hollow Waveguides: A New Level of Integration in Mid-Infrared Gas Sensing journal October 2013
iCONVERT: An Integrated Device for the UV-Assisted Determination of H2S via Mid-Infrared Gas Sensors journal September 2015
iHWG-ICL: Methane Sensing with Substrate-Integrated Hollow Waveguides Directly Coupled to Interband Cascade Lasers journal June 2016
muciPRECON: multichannel preconcentrators for portable mid-infrared hydrocarbon gas sensors journal January 2016
iHWG-μNIR: a miniaturised near-infrared gas sensor based on substrate-integrated hollow waveguides coupled to a micro-NIR-spectrophotometer journal January 2014
Fabrication of germanium‐coated nickel hollow waveguides for infrared transmission journal September 1983
A Review of IR Transmitting, Hollow Waveguides journal July 2000
A Review of Signal Enhancement and Noise Reduction Techniques for Tunable Diode Laser Absorption Spectroscopy journal April 2014
Fibre optic sensors: a review of today's applications journal September 2011
Fibre optics in sensing and measurement – achievements and opportunities conference October 2015
Design and optimization of hollow-optical-fiber gas cell for infrared spectroscopy journal January 2013
Quantum Cascade Laser journal April 1994
Propagation of infrared light in flexible hollow waveguides journal January 1976
Hollow glass waveguides for broadband infrared transmission journal July 1994
Mid-Infrared Trace Gas Analysis with Single-Pass Fourier Transform Infrared Hollow Waveguide Gas Sensors journal March 2009

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