Title :
9 dB gain improvement of 1300 nm optical amplifier by amplified spontaneous emission suppressing fibre design
Author :
Bjarklev, A. ; Rasmussen, T. ; Povlsen, J.H. ; Lumholt, O. ; Rottwitt, K. ; Dahl-Petersen, S. ; Larsen, C.C.
Author_Institution :
Center for Broadband Telecommun., Electromagnetics Inst., Tech. Univ., of Denmark, Lyngby, Denmark
Abstract :
A new design of a Nd-doped fluoride fibre for 1300 nm small-signal amplification is presented. By placing the active material so that the 1050 nm amplified spontaneous emission is discriminated, a gain improvement of up to 6.6 dB is predicted. By including higher order pump modes an extra 2.1 dB gain improvement is achieved.
Keywords :
aluminium compounds; barium compounds; fibre lasers; fluoride glasses; lanthanum compounds; lead compounds; neodymium; optical pumping; sodium compounds; superradiance; zirconium compounds; 1300 nm; ZrF 4-BaF 2-LaF 3-AlF 3-NaF-PbF 2:Nd 3+; amplified spontaneous emission; fibre amplifiers; fibre design; fluoride glass; gain improvement; higher order pump modes; small-signal amplification;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911059
