Abstract
Tellurite fibers with 7500 ppm Er3+ concentration and diverse
2500-15,000 ppm Tm3+ concentrations were manufactured, and their
amplified spontaneous emission (ASE) intensities 1550 nm band around
were obtained for 980 and 790 nm pump laser. Maxima 187 nm bandwidth at
-3 dB points using Er3+-Tm3+ co-doped tellurite optical fibers pumping
at 790 nm was obtained, and energy transfer (ET) process between
I-4(13/2) Er3+ and F-3(4) Tm3+ levels related with the amplifier quantum
efficiency was studied from experimental and calculated lifetime. (c)
2005 Elsevier Inc. All rights reserved.
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