| Enhancement of Gain in L-Band Bismuth-Based Erbium-Doped Fibre Amplifier Using an Un-pumped EDF and Midway Isolator |
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| 作者姓名： | W.Y.Chong S.W.Harun H.Ahmad |
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| 作者单位： | [1]PhotonicsLaboratory,DepartmentofPhysics,UniversityofMalaya,50603KualaLumpur [2]FacultyofEngineering,MultimediaUniversity,JalanMultimedia63100Cyberjaya,SelangorMalaysia |
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| 摘 要： | A hybrid L-band erbium-doped fibre amplifier (EDFA) with enhanced gain characteristic is demonstrated without a significant noise figure penalty. It uses a backward C-band amplified stimulated emission from both the ends of a bismuth-based EDFA system to pump an unpumped erbium-doped fibre (EDF) for gain enhancing. The maximum gain enhancement of 4.0dB is obtained at wavelength 1604nm with EDF length of 20m. The gain spectrum is reasonably fiat in this amplifier compared with the amplifier without an EDF. The gain varies from 27.4 dB to 30.2 dB at wavelength region 1564-1608 nm with incorporation of 20 m EDF. Noise figure also varies from 6.0 to 7.TdB at this wavelength region.
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| 关 键 词： | 纤维放大器 EDF 半绝缘体 铒 噪声系数 光通信 |
Enhancement of Gain in L-Band Bismuth-Based Erbium-Doped Fibre Amplifier Using an Un-pumped EDF and Midway Isolator |
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| W.Y.Chong S.W.Harun H.Ahmad.Enhancement of Gain in L-Band Bismuth-Based Erbium-Doped Fibre Amplifier Using an Un-pumped EDF and Midway Isolator[J].Chinese Physics Letters,2004,21(12):2452-2453. |
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| Authors: | W Y Chong S W Harun H Ahmad |
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| Affiliation: | Photonics Laboratory, Department of Physics, University of Malaya, 50603 Kuala Lumpur
Faculty of Engineering, Multimedia University, Jalan Multimedia 63100 Cyberjaya, Selangor Malaysia |
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| Abstract: | A hybrid L-band erbium-doped fibre amplifier (EDFA) with enhanced gain characteristic is demonstrated without a significant noise figure penalty. It uses a backward C-band amplified stimulated emission from both the ends of a bismuth-based EDFA system to pump an unpumped erbium-doped fibre (EDF) for gain enhancing. The maximum gain enhancement of 4.0dB is obtained at wavelength 1604nm with EDF length of 20m. The gain spectrum is reasonably flat in this amplifier compared with the amplifier without an EDF. The gain varies from 27.4dB to 30.2dB at wavelength region 1564--1608nm with incorporation of 20m EDF. Noise figure also varies from 6.0 to 7.7dB at this wavelength region. |
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| Keywords: | 42 81 Qb 42 60 Da 42 65 Yj |
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