Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG
A gain-clamped long wavelength band erbium-doped fiber amplifier (L-band EDFA) with an improved gain characteristic is demonstrated by simply adding a broadband conventional band (C-band) fiber Bragg grating (FBG) in a two-stage amplifier system. The FBG reflects backward C-band amplified spontaneou...
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| Format: | Article |
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Institute of Electrical and Electronics Engineers (IEEE)
2004
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| _version_ | 1825721342153981952 |
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| author | Harun, Sulaiman Wadi Tamchek, Nizam Poopalan, Prabakaran Ahmad, Harith |
| author_facet | Harun, Sulaiman Wadi Tamchek, Nizam Poopalan, Prabakaran Ahmad, Harith |
| author_sort | Harun, Sulaiman Wadi |
| collection | UM |
| description | A gain-clamped long wavelength band erbium-doped fiber amplifier (L-band EDFA) with an improved gain characteristic is demonstrated by simply adding a broadband conventional band (C-band) fiber Bragg grating (FBG) in a two-stage amplifier system. The FBG reflects backward C-band amplified spontaneous emission (ASE) from the second stage back into the system to clamp the gain. The gain is clamped at about 22.4 dB with a gain variation below 0.4 dB for input signal powers of -40 to -15 dBm. Compared with an unclamped amplifier of similar noise figure values, the small signal gain has improved by 2.4 dB due to the FBG which blocks the backward propagating ASE. At wavelengths from 1570 to 1600 nm, gain of the clamped amplifier varies from 19.4 to 26.7 dB. The corresponding noise figure varies by ±0.35 dB around 5 dB, which is not much different compared to that of the undamped amplifier. |
| first_indexed | 2024-03-06T05:48:54Z |
| format | Article |
| id | um.eprints-19649 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:48:54Z |
| publishDate | 2004 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | um.eprints-196492018-10-11T08:31:21Z http://eprints.um.edu.my/19649/ Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG Harun, Sulaiman Wadi Tamchek, Nizam Poopalan, Prabakaran Ahmad, Harith Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering A gain-clamped long wavelength band erbium-doped fiber amplifier (L-band EDFA) with an improved gain characteristic is demonstrated by simply adding a broadband conventional band (C-band) fiber Bragg grating (FBG) in a two-stage amplifier system. The FBG reflects backward C-band amplified spontaneous emission (ASE) from the second stage back into the system to clamp the gain. The gain is clamped at about 22.4 dB with a gain variation below 0.4 dB for input signal powers of -40 to -15 dBm. Compared with an unclamped amplifier of similar noise figure values, the small signal gain has improved by 2.4 dB due to the FBG which blocks the backward propagating ASE. At wavelengths from 1570 to 1600 nm, gain of the clamped amplifier varies from 19.4 to 26.7 dB. The corresponding noise figure varies by ±0.35 dB around 5 dB, which is not much different compared to that of the undamped amplifier. Institute of Electrical and Electronics Engineers (IEEE) 2004 Article PeerReviewed Harun, Sulaiman Wadi and Tamchek, Nizam and Poopalan, Prabakaran and Ahmad, Harith (2004) Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG. IEEE Photonics Technology Letters, 16 (2). pp. 422-424. ISSN 1041-1135, DOI https://doi.org/10.1109/LPT.2003.822230 <https://doi.org/10.1109/LPT.2003.822230>. http://dx.doi.org/10.1109/LPT.2003.822230 doi:10.1109/LPT.2003.822230 |
| spellingShingle | Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering Harun, Sulaiman Wadi Tamchek, Nizam Poopalan, Prabakaran Ahmad, Harith Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title | Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title_full | Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title_fullStr | Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title_full_unstemmed | Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title_short | Gain Clamping in Two-Stage L-Band EDFA Using a Broadband FBG |
| title_sort | gain clamping in two stage l band edfa using a broadband fbg |
| topic | Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering |
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