Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi
A thorough study on Bismuth-based Erbium-doped fiber (Bi-EDF) is presented for wide-band amplifiers and multi-wavelength fiber laser applications. This fiber allows high Erbium ions concentration to be doped without a significant concentration quenching effect. The high refractive index characterist...
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| Format: | Thesis |
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2010
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| Online Access: | http://studentsrepo.um.edu.my/6200/ http://studentsrepo.um.edu.my/6200/1/LIST.pdf http://studentsrepo.um.edu.my/6200/2/sharife%2Dafter_viva_print.pdf http://studentsrepo.um.edu.my/6200/3/title.pdf |
| _version_ | 1848773099546214400 |
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| author | Sharifeh, Shahi |
| author_facet | Sharifeh, Shahi |
| author_sort | Sharifeh, Shahi |
| building | UM Research Repository |
| collection | Online Access |
| description | A thorough study on Bismuth-based Erbium-doped fiber (Bi-EDF) is presented for wide-band amplifiers and multi-wavelength fiber laser applications. This fiber allows high Erbium ions concentration to be doped without a significant concentration quenching effect. The high refractive index characteristic in the Bi-EDF has broadened the emission spectrum of Erbium ions to achieve a broader gain spectrum up to extended L-band region compared to normal silica-based Erbium-doped fiber (EDF). The Bi-EDFA performances have been investigated in terms of power conversion efficiency (PCE), quantum conversion efficiency (QCE), gain and noise figure. The highest QCE and PCE for a 215 cm long of Bi-EDF are estimated to be approximately 23.7% and 25.7%, which is obtained at 1605 nm. With bi-directional pumping, the maximum gain of 34 dB is obtained at approximately 1570 nm. The operation of the bi-directional Bi-EDFA covers from C-band to the extended L-band regions. Furthermore, various configurations on the multi-wavelength fiber lasers have been proposed and demonstrated using the Bi-EDF as both the linear and nonlinear effects. Nonlinear effects such as the stimulated Brillouin scattering (SBS) and four-wave mixing (FWM) are used in the fiber lasers to generate multi-wavelength comb lines. The Brillouin Erbium fiber laser (BEFL) is able to produce a stable comb with 50 lines at extended L-band region using only a Bi-EDF as the gain medium. The multi-wavelength fiber laser has also been demonstrated for the first time based on a Bi-EDF assisted by a FWM process. The estimation of the nonlinear parameters of Bi-EDF was also proposed based on the FWM effect. With a simple ring cavity, the laser generates more than 10 lines of optical comb with a line spacing of approximately 0.41nm at 1615.5 nm region using 146 mW of 1480 nm pump power. |
| first_indexed | 2025-11-14T13:37:01Z |
| format | Thesis |
| id | um-6200 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T13:37:01Z |
| publishDate | 2010 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-62002016-03-19T01:31:46Z Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi Sharifeh, Shahi Q Science (General) A thorough study on Bismuth-based Erbium-doped fiber (Bi-EDF) is presented for wide-band amplifiers and multi-wavelength fiber laser applications. This fiber allows high Erbium ions concentration to be doped without a significant concentration quenching effect. The high refractive index characteristic in the Bi-EDF has broadened the emission spectrum of Erbium ions to achieve a broader gain spectrum up to extended L-band region compared to normal silica-based Erbium-doped fiber (EDF). The Bi-EDFA performances have been investigated in terms of power conversion efficiency (PCE), quantum conversion efficiency (QCE), gain and noise figure. The highest QCE and PCE for a 215 cm long of Bi-EDF are estimated to be approximately 23.7% and 25.7%, which is obtained at 1605 nm. With bi-directional pumping, the maximum gain of 34 dB is obtained at approximately 1570 nm. The operation of the bi-directional Bi-EDFA covers from C-band to the extended L-band regions. Furthermore, various configurations on the multi-wavelength fiber lasers have been proposed and demonstrated using the Bi-EDF as both the linear and nonlinear effects. Nonlinear effects such as the stimulated Brillouin scattering (SBS) and four-wave mixing (FWM) are used in the fiber lasers to generate multi-wavelength comb lines. The Brillouin Erbium fiber laser (BEFL) is able to produce a stable comb with 50 lines at extended L-band region using only a Bi-EDF as the gain medium. The multi-wavelength fiber laser has also been demonstrated for the first time based on a Bi-EDF assisted by a FWM process. The estimation of the nonlinear parameters of Bi-EDF was also proposed based on the FWM effect. With a simple ring cavity, the laser generates more than 10 lines of optical comb with a line spacing of approximately 0.41nm at 1615.5 nm region using 146 mW of 1480 nm pump power. 2010 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/6200/1/LIST.pdf application/pdf http://studentsrepo.um.edu.my/6200/2/sharife%2Dafter_viva_print.pdf application/pdf http://studentsrepo.um.edu.my/6200/3/title.pdf Sharifeh, Shahi (2010) Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi. PhD thesis, University of Malaya. http://studentsrepo.um.edu.my/6200/ |
| spellingShingle | Q Science (General) Sharifeh, Shahi Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title | Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title_full | Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title_fullStr | Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title_full_unstemmed | Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title_short | Nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / Sharifeh Shahi |
| title_sort | nonlinear fiber lasers using bismuth based erbium doped fiber amplifier / sharifeh shahi |
| topic | Q Science (General) |
| url | http://studentsrepo.um.edu.my/6200/ http://studentsrepo.um.edu.my/6200/1/LIST.pdf http://studentsrepo.um.edu.my/6200/2/sharife%2Dafter_viva_print.pdf http://studentsrepo.um.edu.my/6200/3/title.pdf |