| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 9, 2014
|
|
|---|---|---|
| Article Number | 14028 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.2971/jeos.2014.14028 | |
| Published online | 22 July 2014 | |
Regular papers
56.6 dB high gain L-band EDFA utilizing short-length highly-doped erbium rare-earth material
Faculty of Engineering, Sohar University, PO Box 44, PCI 311, Sohar, Oman
Received:
29
May
2014
Revised:
21
June
2014
In this paper, we experimentally investigate the performance of an efficient high gain L-band erbium-doped fiber (EDF) amplifier structure utilizing short-length highly-doped erbium rare-earth material with a single pump source. The amplifier gain and noise figure variation for different amplifier structures have been investigated. A filter is used to reduce the self-saturation effect and suppress the C-band amplified spontaneous emission (ASE) noise. The amplifier achieves a signal gain of 56.6 dB with a low noise figure of 4.8 dB at −50 dBm input signal power using only 8 m of EDF length. The amplifier gain shows significant improvement of 6 dB with C/L band coupler and 13 dB with tunable-band pass filter compared to amplifier structure without ASE suppression.
Key words: Optical amplifiers / EDFA / L-band / optical filters / optical networks
© The Author(s) 2014. All rights reserved.
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