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Transient effects and gain-control method in low-noise dispersion-compensating hybrid fiber amplifier
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- Authors
- Sun Hyok Chang, Seung Kwan Kim, Hee Sang Chung, Moo-Jung Chu
- Issue Date
- 2003-07
- Citation
- IEEE Photonics Technology Letters, v.15, no.7, pp.906-908
- ISSN
- 1041-1135
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- Transient effects in low-noise dispersion-compensating hybrid fiber amplifier (DC-HFA) are presented to show the combined dynamics of erbium-doped fiber amplifier and fiber Raman amplifier. Transient features in surviving signal channel are analyzed with numerical simulation in each stage of DC-HFA. A gain-control method that utilizes the transit time of dispersion-compensating fiber is suggested and it has the advantages of enough time for the gain-control electronics and lower noise figure in surviving channels.
- KSP Keywords
- Control electronics, Erbium doped fiber amplifier(EDFA), Fiber Raman amplifiers(FRAs), Hybrid fiber amplifier, Low noise, Transient effects, Transient features, Transit time, control method, noise dispersion, noise figure