Dynamic gain and output power control in a gain-flattened erbium-doped fiber amplifier

We demonstrate an erbium-doped fiber amplifier (EDFA) that has a flat-gain spectrum over an 18-nm band and a constant per-channel output power regardless of the input powers and the number of channels. The gain flatness and the constant output are obtained by changing the laser diode pump power and the attenuation of the voltage-controlled attenuator (VCA) dynamically. The response times of pump control circuit and attenuator control circuit are 650 us and 9 ms, respectively. The power excursion of surviving channel in an EDFA with fast control circuit is similar to 1% of that without fast control circuit when channels are added or dropped.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1998-06
Language
ENG
Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.10, no.6, pp.787 - 789

ISSN
1041-1135
URI
http://hdl.handle.net/10203/73118
Appears in Collection
EE-Journal Papers(저널논문)
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