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Broad-band erbium-doped fiber amplifier flattened beyond 40 nm using long-period grating filter

Broad-bandwidth amplification is essential for the construction of high-capacity multichannel communication systems. We describe a silica-based erbium doped fiber amplifier (EDFA) with a flat gain bandwidth exceeding 40 nm. The dual-stage EDFA includes a precisely designed inter-stage long-period fi...

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Bibliographic Details
Published in:IEEE photonics technology letters 1997-10, Vol.9 (10), p.1343-1345
Main Authors: Wysocki, P.F., Judkins, J.B., Espindola, R.P., Andrejco, M., Vengsarkar, A.M.
Format: Article
Language:English
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Summary:Broad-bandwidth amplification is essential for the construction of high-capacity multichannel communication systems. We describe a silica-based erbium doped fiber amplifier (EDFA) with a flat gain bandwidth exceeding 40 nm. The dual-stage EDFA includes a precisely designed inter-stage long-period fiber grating filter with more than 14-dB peak attenuation. By careful choice of the filter spectrum and fiber lengths, this EDFA is flat to within 1 dB over 40 nm while producing a noise figure below 4.0 dB and nearly +15-dBm output power.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.623257