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15 June 2023 Physisorbent-coated fiber optic sensors for near ambient leak detection of CH4 or CO2
Jeffrey Culp, Krista Bullard, Ki-Joong Kim, Ruishu Wright
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Proceedings Volume 12532, Optical Waveguide and Laser Sensors II; 1253209 (2023) https://doi.org/10.1117/12.2665073
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States
Abstract
Concerns over global climate change are driving the need for increased emission monitoring of greenhouse gases from various sources. As such, there is a need for new and improved sensing platforms capable of remote interrogation over large geographical areas with varied terrain, large-scale infrastructure, or in areas not accessible to conventional sensing technologies. One sensing platform which is well-suited to these niche applications is a waveguide-based optical fiber sensor. The application of a physical sorbent coating to the optical fiber provides a remote and reversible sensing mechanism where absorption of the analyte gas into the coating induces a change in transmitted power due to a change in the refractive index of the coating. Advances in the development of moisture-resistant refractive index-based fiber optic gas sensors which operate at near-infrared wavelengths will be presented, as well as the results on coating optimization.
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Jeffrey Culp, Krista Bullard, Ki-Joong Kim, and Ruishu Wright "Physisorbent-coated fiber optic sensors for near ambient leak detection of CH4 or CO2", Proc. SPIE 12532, Optical Waveguide and Laser Sensors II, 1253209 (15 June 2023); https://doi.org/10.1117/12.2665073
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KEYWORDS
Carbon dioxide
Fiber optics sensors
Remote sensing
Sensors
Coating
Optical fibers
Gases
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