Paul, Mukul Chandra and Harun, S W and Huri, N A D and Hamzah, A and Das, S K and Pal, Mrinmay and Bhadra, Shyamal Kumar and Ahmad, H and Yoo, S and Kalita, M P and Boyland, A J and Sahu, J K (2010) Performance comparison of Zr-based and Bi-based erbium-doped fiber amplifiers. Optics Letters, 35 (17). pp. 2882-2884. ISSN 0146-9592

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In this Letter, we present a comprehensive comparison of the performance of a zirconia-based erbium-doped fiber amplifier (Zr-EDFA) and a bismuth-based erbium-doped fiber amplifier (Bi-EDFA). The experimental results reveal that a Zr-EDFA can achieve comparable performance to the conventional Bi-EDFA for C-band and L-band operations. With a combination of both Zr and Al, we could achieve a high erbium-doping concentration of about 2800 ppm (parts per million) in the glass host without any phase separations of rare earths. The Zr-based erbium-doped fiber (Zr-EDF) was fabricated using in a ternary glass host, zirconia-yttria-aluminum codoped silica fiber through a solution-doping technique along with modified chemical vapor deposition. At a high input signal of 0 dBm, a flat gain at average value of 13 dB is obtained with a gain variation of less than 2 dB within the wavelength region of 1530-1575 nm and using 2 m of Zr-EDF and 120 mW pump power. The noise figures are less than 9.2 at this wavelength region. It was found that a Zr-EDFA can achieve even better flat-gain value and bandwidth as well as lower noise figure than the conventional Bi-EDFA. (C) 2010 Optical Society of America

Item Type: Article
Subjects: Processing Science
Depositing User: Bidhan Chaudhuri
Date Deposited: 16 Feb 2012 06:45
Last Modified: 16 Feb 2012 06:45

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