Thermal bleaching of BACs in bismuth/erbium co-doped fiber fabricated through 3D silica lithography

Bismuth/erbium co-doped optical fiber fabricated through 3D silica lithography is thermally treated with various conditions. Then the thermal treatment effect on bismuth active centers (BACs) in this fiber is investigated. The thermal bleaching of the BAC associated with Al and the BAC associated wi...

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Bibliographic Details
Published in:Optics letters 2020-07, Vol.45 (13), p.3729-3732
Main Authors: Zhang, Bowen, Chu, Yushi, Fu, Xinghu, Wei, Shuen, Wang, Jiaying, Luo, Yanhua, Peng, Gang-Ding
Format: Article
Language:English
Subjects:
Aluminum
Bismuth
Bleaching
Doped fibers
Dwell time
Erbium
Heat treatment
Lithography
Optical fibers
Silicon dioxide
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Summary:Bismuth/erbium co-doped optical fiber fabricated through 3D silica lithography is thermally treated with various conditions. Then the thermal treatment effect on bismuth active centers (BACs) in this fiber is investigated. The thermal bleaching of the BAC associated with Al and the BAC associated with Si is observed after thermal treatment at high temperatures (300°C–800°C). It is found that the absorption and luminescence of BACs dramatically decrease after the thermal treatment, even totally bleaching at 700°C. The results show that the temperature and dwell time have significant effects on the thermal bleaching and activation of BACs. The underlying mechanisms of these thermal-induced effects are further discussed.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.397975