Title :
Broad-band amplification using a novel amplifier topology
Author :
Di Muro, Rodolfo ; Lowe, Dan ; Wilson, Steve
Author_Institution :
Marconi Commun., Coventry, UK
Abstract :
A new broad-band amplifier topology that provides a continuous gain across 75 nm (1528-1603 nm) of optical bandwidth using Er/sup 3+/-doped SiO/sub 2/ fiber is demonstrated. The noise figure is low and does not present any discontinuity across the entire amplification bandwidth. The topology has a buried 1550/1585-nm splitter to reduce input signal loss and to provide amplified spontaneous emission suppression. The topology has been optimized using hybrid fiber; Er/sup 3+/-doped SiO/sub 2/ for the first stage and Er/sup 3+/-doped TeO/sub 2/ for the second stage, achieving 82 nm (1526-1618 nm) of optical bandwidth.
Keywords :
erbium; laser transitions; optical communication equipment; optical fibre amplifiers; optical fibre losses; superradiance; topology; 1526 to 1618 nm; 1528 to 1603 nm; 1550 nm; 1585 nm; Er/sup 3+/-doped SiO/sub 2/; Er/sup 3+/-doped SiO/sub 2/ fiber; Er/sup 3+/-doped TeO/sub 2/; SiO/sub 2/:Er; TeO/sub 2/:Er; amplified spontaneous emission suppression; amplifier topology; broad-band amplification; buried 1550/1585-nm splitter; continuous gain; entire amplification bandwidth; hybrid fiber; input signal loss; noise figure; optical bandwidth; topology; Bandwidth; Erbium; Noise figure; Optical amplifiers; Optical fiber amplifiers; Optical losses; Optical noise; Semiconductor optical amplifiers; Stimulated emission; Topology;
Journal_Title :
Photonics Technology Letters, IEEE
