The modeling of rare-earth-doped fiber amplifier is accomplished by utilizing the rate and propagation
equations of distinct levels for a laser medium. A complex theoretical model for neodymium (Nd3+), erbium (Er3+),
thulium (Tm3+) and ytterbium (Yb3+) codoped telluride glass fiber covering 0.4|2.0 μm emission spectra is
presented. The emission spectra of Nd3+-Er3+-Tm3+-Yb3+ codoped telluride fiber are realized with the excitation
of both 808 and 980nm lasers pumped at 500mW. Numerical methods are used to calculate the emission spectra
covering 0.4|2.0 μm. With the Nd3+, Tm3+ and Yb3+ ion concentrations fixed at 2 ￡ 1020 ion/m3, the Er3+
ion concentration optimized to 8 ￡ 1020 ion/m3 and the ˉber length spanning from 0.5 to 2 m, a peak amplified
spontaneous emission (ASE) power of 19.8mW is attainable, and a minimum ASE power of 7.96mW can also
be achieved. The analytical techniques and results indicate that when a telluride codoped fiber with suitable
ion concentrations of Nd3+, Er3+, Tm3+ and Yb3+ is excited by both 980 and 808nm pump lasers, 0.4|2.0 μm
emission spectra are attainable for vast optical applications.
NKONDE Sampa, JIANG Chun (姜淳)
. Modeling Nd3+-Yb3+-Tm3+-Er3+ Codoped Telluride Glass Fiber for 0.4 to 2.0 μm Emission Spectra[J]. Journal of Shanghai Jiaotong University(Science), 2018
, 23(3)
: 352
.
DOI: 10.1007/s12204-018-1950-9
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