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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 14, Iss. 4 — Dec. 25, 2010
  • pp: 342–350

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

Hossein Afkhami, Alireza Mowla, Nosrat Granpayeh, and Azadeh Rastegari Hormozi  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 14, Issue 4, pp. 342-350 (2010)


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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, <TEX>$Er^{3+}$</TEX> 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.

© 2010 Optical Society of Korea

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2410) Fiber optics and optical communications : Fibers, erbium
(140.4480) Lasers and laser optics : Optical amplifiers

History
Original Manuscript: September 29, 2010
Revised Manuscript: November 29, 2010
Manuscript Accepted: November 29, 2010
Published: December 25, 2010

Citation
Hossein Afkhami, Alireza Mowla, Nosrat Granpayeh, and Azadeh Rastegari Hormozi, "Wideband Gain Flattened Hybrid Erbium-doped Fiber Amplifier/Fiber Raman Amplifier," J. Opt. Soc. Korea 14, 342-350 (2010)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-14-4-342


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