Wide-band flat-gain optical amplifier using Hafnia and zirconia erbium co-doped fibres in double-pass parallel configuration |
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Authors: | Alabbas A Al-Azzawi Aya A Almukhtar P H Reddy D Dutta S Das A Dhar |
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Affiliation: | 1. Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia;2. Department of Computer Techniques Engineering, Al-Esraa University College, Baghdad, Iraqhttps://orcid.org/0000-0001-7452-7970;3. Department of Computer Techniques Engineering, Al-Esraa University College, Baghdad, Iraq;4. Fiber Optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata, India;5. Academy of Scientific and Innovative Research (AcSIR), CSIR-CGCRI Campus, Kolkata, India |
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Abstract: | ABSTRACTA new compact and wide-band erbium-doped fibre amplifier (EDFA) was demonstrated by combining Hafnia-bismuth Erbium co-doped fibre (HB-EDF) and zirconia–yttria–aluminum Erbium co-doped fibre (Zr-EDF) as a hybrid gain medium, in parallel double-pass configuration. The proposed amplifier comprises a 0.5?m long HB-EDF and 4?m long Zr-EDF optimized for C- and L-band operations, respectively. The HB-EDF and Zr-EDF has erbium ion concentration of 12,500?ppm and 2800?ppm, respectively. At -10 dBm input signal, a wide-band flat gain of 15.7?dB is achieved with gain fluctuation of less than 1.5?dB within a wavelength region from 1525 to 1600?nm. Compared to same configuration of HB-EDF and Zr-EDF amplifiers which are using two pieces of HB-EDF and Zr-EDF, respectively with the same total amount of erbium ions, the proposed EDFA with hybrid gain medium provides even better performances in term of flat gain, bandwidth and noise figure. |
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Keywords: | Wideband optical amplifier Hafnia-bismuth erbium co-doped fibre double-pass parallel configuration flat gain amplifier erbium-doped fiber amplifier compact optical amplifier |
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