All silica S-band double-pass erbium-doped fiber amplifier

Double-pass (DP) and single-pass (SP) erbium-doped depressed cladding fiber amplifiers designed for S-band operation are evaluated under changes of the input optical power, pumping power, and fiber bending radius. The DP configuration employs the usual combination of a circulator and a Faraday rotat...

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Veröffentlicht in:	IEEE photonics technology letters 2005-07, Vol.17 (7), p.1399-1401
Hauptverfasser:	Rosolem, J.B., Juriollo, A.A., Arradi, R., Coral, A.D., Oliveira, J.C.R.F., Romero, M.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplification Amplifiers Bend tests Erbium-doped fiber amplifier Gain Noise Noise figure Operational amplifiers Optical circulators Optical design Optical fiber amplifiers optical fiber communication Optical fibers Optical noise Optical pumping Power amplifiers Semiconductor optical amplifiers Silicon compounds Spontaneous emission Stimulated emission
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Beschreibung
Zusammenfassung:	Double-pass (DP) and single-pass (SP) erbium-doped depressed cladding fiber amplifiers designed for S-band operation are evaluated under changes of the input optical power, pumping power, and fiber bending radius. The DP configuration employs the usual combination of a circulator and a Faraday rotator mirror while the SP is based on the copropagating scheme. The amplifiers were characterized in terms of gain and noise figure. It is demonstrated that the DP topology shows much improved gain performance compared to the SP configuration although the noise figure is slightly degraded by counterpropagating amplified spontaneous emission.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2005.848544