Flat-gain L-band amplifier containing AlPO4 units in aluminophosphosilicate erbium-doped fibers.
Opt Lett
; 48(21): 5579-5582, 2023 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-37910707
ABSTRACT
We present a flat-gain single-stage L-band erbium-doped fiber amplifier (EDFA) with a gain ripple of ±0.7â
dB from 1580 to 1615â
nm, by using aluminophosphosilicate erbium-doped fiber (APS-EDF) with an estimated AlPO4 composition of 13.3â
mol%. A series of APS-EDFs were fabricated with increasing AlPO4 and Er concentrations, while maintaining a low background loss of 0.031 ± 0.005â
dB/m and preventing Er ion clustering. The spectroscopic study shows a slightly narrowing Er cross section and flattened emission cross-section spectrum in the L-band with more AlPO4, thus favoring the L-band amplification with an improved gain flatness. Also, the gain coefficient, gain saturation, and temperature-dependent gain characteristics were reported. A better temperature tolerance was observed with increasing AlPO4.
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MEDLINE
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En
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Opt Lett
Ano de publicação:
2023
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Article