@article{ecd0498eac5e4ddcb8cf6b5ee86ec252,
title = "Detailed design analysis of erbium-doped fiber amplifiers",
abstract = "When pumping the erbium-doped fiber amplifier at 0.98 and 1.48 mu m, the optimum cutoff wavelength for step profiles with arbitrary numerical aperture is shown to be 0.80 and 0.90 mu m, respectively. The use of a confined erbium profile can improve the gain coefficient up to 45%. The index raising co-dopant is shown to be very significant for the gain coefficient when pumping at 0.98 mu m",
author = "Bo Pedersen and Bjarklev, {Anders Overgaard} and Ole Lumholt and Povlsen, {J{\o}rn Hedegaard}",
note = "Copyright: 1991 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE",
year = "1991",
doi = "10.1109/68.9103",
language = "English",
volume = "3",
pages = "548--550",
journal = "I E E E Photonics Technology Letters",
issn = "1041-1135",
publisher = "Institute of Electrical and Electronics Engineers",
number = "6",
}