Highly saturated EDFA for gain clamping operation
A highly saturated erbium-doped fiber amplifier (EDFA) that can be used for gain-clamping is demonstrated. This amplifier utilizes a short length of active fiber to provide a small but maximum gain and a high pump power to enhance the gain dynamic range. The gain for two simultaneous equal strength...
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| Main Authors: | , , , |
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| Format: | Article |
| Published: |
John Wiley & Sons
2007
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/19682/ http://dx.doi.org/10.1002/mop.22635 |
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| Summary: | A highly saturated erbium-doped fiber amplifier (EDFA) that can be used for gain-clamping is demonstrated. This amplifier utilizes a short length of active fiber to provide a small but maximum gain and a high pump power to enhance the gain dynamic range. The gain for two simultaneous equal strength input signal channels is clamped at 19.3 dB from -34 dBm to -14 dBm with gain variation of less than 1 dB. The corresponding noise figure is obtained at 3.4 dB, which is slightly lower compared with the normal EDFA. This amplifier is expected to have a low transient power excursion since no compensating light is used inside the system. |
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