High-power Er-Yb-doped fiber amplifier with multichannel gain flatness within 0.2 dB over 14 nm

A high-power Er-Yb fiber amplifier for WDM applications has been constructed using a matched mid-stage gain shaping filter. Using precise measurements and careful design considerations, excellent gain flatness, with less than 0.2-dB variation, was obtained over a 14-nm spectral bandwidth. By simply...

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Bibliographic Details
Published in:IEEE photonics technology letters 1996-09, Vol.8 (9), p.1148-1150
Main Authors: Namkyoo Park, Wysocki, P., Pedrazzani, R., Grubb, S., DiGiovanni, D., Walker, K.
Format: Article
Language:English
Subjects:
Bandwidth
Gain measurement
High power amplifiers
Matched filters
Noise figure
Noise measurement
Power amplifiers
Power measurement
Shape
Wavelength division multiplexing
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Summary:A high-power Er-Yb fiber amplifier for WDM applications has been constructed using a matched mid-stage gain shaping filter. Using precise measurements and careful design considerations, excellent gain flatness, with less than 0.2-dB variation, was obtained over a 14-nm spectral bandwidth. By simply adjusting the pump power to the amplifier, it was possible to maintain the flattened amplifier gain shape over a wide input signal power range from -11 dBm to 1 dBm. A low external noise figure of 5.2 dB at 1-dBm signal input and a high-output power up to 24.6 dBm has been measured.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.531818