Antiresonant hollow-core fiber-assisted differential optical absorption spectroscopy with ppb-level trace gas detection
Year: 2025
Type: article
Abstract: Herein, an antiresonant hollow-core fiber-based trace gas detection utilizing differential optical absorption spectroscopy (DOAS) is reported for the first time. The applied non-wavelength modulation combined with time division multiplexing (TDM) techniques reducing intermodal interference and, hence, mode-coupling noise in hollow-core fibres. Proof-of-concept experiments aimed at acetylene (C 2 H 2 ) detection at 1532.83 nm were successfully performed, yielding a minimum detection limit of 840 ppbv and a noise equivalent absorption coefficient of 4.84 × 10 −7 cm −1 at 8 s of integration time through a 1.4 m fiber.
Source: Optics Express
DOI: 10.1364/oe.579677
Authors: Grzegorz Dudzik, Maciej Kulpa, Piotr Jaworski, Piotr Bojęś, Paweł Kozioł, Walter Belardi, Karol Krzempek
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
Funder: Narodowe Centrum Nauki
Award: G7597099741
OpenAlex ID: W4415986243