Al-Azzawi, Alabbas A and Almukhtar, Aya A and Reddy, P H and Dutta, D and Das, Shyamal and Dhar, A and Paul, Mukul Chandra and Zakaria, U N and Harun, S W (2018) A Flat-Gain Double-Pass Amplifier with New Hafnia-Bismuth-Erbium Codoped Fiber. Chinese Physics Letters, 35 (5). Article No-054206. ISSN 0256-307X

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An efficient and compact double-pass optical fiber amplifier is demonstrated using a newly developed hafnia bismuth erbium co-doped fiber (HBEDF) as a gain medium. The HBEDF is fabricated using a modified chemical vapor deposition in conjunction with solution doping. The fiber has an erbium ion concentration of 12500ppm. At the optimum length of 0.5m, the HBEDF amplifier (HBEDFA) achieves a Sat gain of 26dB with a gain variation of less than 1.5 dB within a wavelength region from 1530 to 1560 nm when the input signal and pump power are fixed at -30 dBm and 140mW, respectively. On the other hand, at the input signal power of -10 dBm, the HBEDFA also achieves a Bat gain of 14.2 dB with a gain variation of less than 2.5 dB within a wide wavelength region from 1525 to 1570nm. Compared with the conventional zirconia erbium co-doped fiber based amplifier, the proposed HBEDFA obtains a more efficient gain and lower noise figure. For an input signal of -30 dBm, the gain improvements of 6.2 dB and 4.8 dB are obtained at 1525nm and 1540nm, respectively.

Item Type: Article
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 31 Aug 2018 09:05
Last Modified: 31 Aug 2018 09:05

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