Compact and efficient Er-Yb-doped fiber amplifier
A compact and efficient optical amplifier is demonstrated using an erbium-ytterbium-doped fiber amplifier (EYDFA) with a double-pass configuration. It uses only 3 m of doped fiber with 20 mW pump power. This forward-pumped amplifier achieves a maximum low signal gain of 37 dB and a corresponding noi...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
World Scientific Publishing
2008
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/19701/ http://dx.doi.org/10.1142/S0218863508004111 |
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| Summary: | A compact and efficient optical amplifier is demonstrated using an erbium-ytterbium-doped fiber amplifier (EYDFA) with a double-pass configuration. It uses only 3 m of doped fiber with 20 mW pump power. This forward-pumped amplifier achieves a maximum low signal gain of 37 dB and a corresponding noise figure of 5.5 dB. Compared with the backward-pumping double-pass EYDFA, the gain obtained is 7 dB higher, with a lower noise figure of 5.5 dB. In addition, the gain obtained in this study is 17 dB higher than that of a conventional forward-pumping single-pass amplifier, while its noise figure is only 0.5 dB higher. These results show that the forward-pumped double-pass design holds great promise in the development of practical and cost-efficient optical amplifiers which can be pumped by using LEDs or low cost laser diodes. |
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