Optical absorption spectrum reveals gaseous chlorine in anti-resonant hollow core fibers
Year: 2024
Type: article
Abstract: We have observed unexpected spectral attenuation of ultraviolet light in freshly drawn hollow core optical fibers. When the fiber ends are left open to atmosphere, this loss feature dissipates over time. The loss matches the absorption spectrum of gaseous (molecular) chlorine and, given enough time, the transmission spectrum of the fiber recovers to that expected from the morphological structure of the fiber. Our measurements indicate an initial chlorine concentration of 0.45 µmol/cm 3 in the hollow core, equivalent to 1.1 mol% Cl 2 at atmospheric pressure.
Source: Optics Express
DOI: 10.1364/oe.537473
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4402900007