Excited-state absorption (ESA) in various bismuth-doped fibers (BDFs) was investigated. No significant ESA in IR emission bands of Bi-doped germanosilicate and phosphosilicate fibers was found. Considerable ESA was observed in Bi-doped aluminosilicate fibers at 800–1700 nm. The ESA spectra of the aluminosilicate BDFs with different bismuth concentration were measured at room and 77 K temperature. Significant dependence of the ESA on the bismuth concentration and the fiber temperature was found.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: January 21, 2014
Revised Manuscript: March 20, 2014
Manuscript Accepted: March 20, 2014
Published: April 15, 2014
K. E. Riumkin, M. A. Melkumov, I. A. Varfolomeev, A. V. Shubin, I. A. Bufetov, S. V. Firstov, V. F. Khopin, A. A. Umnikov, A. N. Guryanov, and E. M. Dianov, "Excited-state absorption in various bismuth-doped fibers," Opt. Lett. 39, 2503-2506 (2014)