Analysis on the transient response of 1.55-mum/1.4-mum dual-wavelength pumped thulium-doped fiber amplifiers

Analysis on the transient response of 1.55-mum/1.4-mum dual-wavelength pumped thulium-doped fiber amplifiers

The transient response of S- and S( )-band thulium-doped fiber amplifiers with 1.4-mum/1.5-mum dual-wavelength pumping scheme was investigated both experimentally and theoretically. In contrast to conventional Erbium-doped fiber amplifiers, two characteristic time-constants related with (3)F(4) and...

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Veröffentlicht in:IEEE photonics technology letters 2002-11, Vol.14 (11), p.1503-1505
Hauptverfasser: Byun, Jae-Oh, Kim, Pilhan, Lee, Won Jae, Lee, Choong Hee, Park, Namkyoo
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Kim, Pilhan
Lee, Won Jae
Lee, Choong Hee
Park, Namkyoo
description The transient response of S- and S( )-band thulium-doped fiber amplifiers with 1.4-mum/1.5-mum dual-wavelength pumping scheme was investigated both experimentally and theoretically. In contrast to conventional Erbium-doped fiber amplifiers, two characteristic time-constants related with (3)F(4) and (3)H (4) level lifetime were observed, implying the need of much complex transient control algorithm for the future applications. The amount of surviving channel gain, gain excursion, and related time constants showed changes in their response characteristics, depending on the combinations of main pump, subsidiary pump, and signal powers. A simplified numerical approach for the analysis of transient response in thulium-doped fiber amplifiers under average inversion framework, will be provided
doi_str_mv 10.1109/LPT.2002.803336
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title Analysis on the transient response of 1.55-mum/1.4-mum dual-wavelength pumped thulium-doped fiber amplifiers
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