Low-noise erbium-doped fibre amplifier operating at 1.54μm Mears, R. J. ; Reekie, L. ; Jauncey, I. M. ; Payne, D. N. Abstract Publication: Electronics Letters Pub Date: 1987 DOI: 10.1049/el:19870719 Bibcode: 1987ElL....23.1026M