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http://dx.doi.org/10.3807/JOSK.2010.14.4.342

Wideband Gain Flattened Hybrid Erbium-doped Fiber Amplifier/Fiber Raman Amplifier  

Afkhami, Hossein (Islamic Azad University)
Mowla, Alireza (Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology)
Granpayeh, Nosrat (Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology)
Hormozi, Azadeh Rastegari (Islamic Azad University)
Publication Information
Journal of the Optical Society of Korea / v.14, no.4, 2010 , pp. 342-350 More about this Journal
Abstract
An optimal wideband gain flattened hybrid erbium-doped fiber amplifier/fiber Raman amplifier (EDFA/FRA) has been introduced. A new and effective optimization method called particle swarm optimization (PSO) is employed to find the optimized parameters of the EDFA/FRA. Numerous parameters which are the parameters of the erbium-doped fiber amplifier (EDFA) and the fiber Raman amplifier (FRA) define the gain spectrum of a hybrid EDFA/FRA. Here, we optimize the length, $Er^{3+}$ concentration, and pump power and wavelength of the EDFA and also pump powers and wavelengths of the FRA to obtain the flattest operating gain spectrum. Hybrid EDFA/FRA with 6-pumped- and 10-pumped-FRAs have been studied. Gain spectrum variations are 1.392 and 1.043 dB for the 6-pumped- and 10-pumped-FRAs, respectively, in the 108.5 km hybrid EDFA/FRAs, with 1 mW of input signal powers. Dense wavelength division multiplexing (DWDM) system with 60 signal channels in the wavelength range of 1529.2-1627.1 nm, i.e. the wide bandwidth of 98 nm, is studied. In this work, we have added FRA's pump wavelengths to the optimization parameters to obtain better results in comparison with the results presented in our previous works.
Keywords
Hybrid fiber amplifier; Erbium-doped fiber amplifier; Fiber Raman amplifier; Optimization; Particle swarm optimization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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