Year: 2025
Type: article
Abstract: We measure the spectral fluorescence emitted by commercial pure-silica core and germanium-doped core fibers in the range of 760-860 nm and find that the broadband fluorescence that exists in the Ge-doped fiber can be avoided by adopting the pure-silica core fiber. Most importantly, we present a narrowband (∼1 nm FWHM) emission line characteristic of zirconia ferrules used in both commercial Ge-doped and pure-silica core fiber patch cables. The results of this work are significant to many applications in the fields of quantum optics and fluorescence spectroscopy, where strong pump light co-propagates with signals at the photon level.
Source: Optics Letters
DOI: 10.1364/ol.549799
Authors: Alexander C. B. Greenwood, Abhay Verma, Jackson Russett, Andi Shahaj, Li Qian
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4407846023