Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-sta...
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| Format: | Article |
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Elsevier
2003
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| _version_ | 1825721340553854976 |
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| author | Harun, Sulaiman Wadi Ahmad, Harith |
| author_facet | Harun, Sulaiman Wadi Ahmad, Harith |
| author_sort | Harun, Sulaiman Wadi |
| collection | UM |
| description | A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-stage amplifier. The two-stage L-band EDFA has shown a small signal gain improvement of 5.7 dB compared to a single-stage amplifier with a slight noise figure degradation. By utilizing the wasted backward ASE, a L-band gain-clamped EDFA with high gain can be realized. Compared to the unclamped case, this gain-clamping technique is effective in reducing the total gain variation as small as 0.3 dB. |
| first_indexed | 2024-03-06T05:48:53Z |
| format | Article |
| id | um.eprints-19641 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:48:53Z |
| publishDate | 2003 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-196412018-10-11T08:07:30Z http://eprints.um.edu.my/19641/ Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage Harun, Sulaiman Wadi Ahmad, Harith Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-stage amplifier. The two-stage L-band EDFA has shown a small signal gain improvement of 5.7 dB compared to a single-stage amplifier with a slight noise figure degradation. By utilizing the wasted backward ASE, a L-band gain-clamped EDFA with high gain can be realized. Compared to the unclamped case, this gain-clamping technique is effective in reducing the total gain variation as small as 0.3 dB. Elsevier 2003 Article PeerReviewed Harun, Sulaiman Wadi and Ahmad, Harith (2003) Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage. Optics & Laser Technology, 35 (6). pp. 441-444. ISSN 0030-3992, DOI https://doi.org/10.1016/S0030-3992(03)00049-5 <https://doi.org/10.1016/S0030-3992(03)00049-5>. http://dx.doi.org/10.1016/S0030-3992(03)00049-5 doi:10.1016/S0030-3992(03)00049-5 |
| spellingShingle | Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering Harun, Sulaiman Wadi Ahmad, Harith Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title | Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title_full | Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title_fullStr | Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title_full_unstemmed | Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title_short | Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage |
| title_sort | gain clamping in two stage l band edfa using an unwanted backward ase from second stage |
| topic | Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering |
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