NDLI: Gain and bandwidth improvements for distributed Raman amplifier in UW-WDM communication systems

Content Provider	IEEE Xplore Digital Library
Author	Mustafa, F.M. Khalaf, A.A.M. Elgeldawy, F.A.
Copyright Year	2014
Description	Author affiliation: Electron. & Commun. Eng. Dept., Bani-suef Univ., Beni Suef, Egypt (Mustafa, F.M.) \|\| Electron. & Commun. Eng. Dept., ElMinia Univ., El Minia, Egypt (Khalaf, A.A.M.; Elgeldawy, F.A.)
Abstract	Fiber Raman amplifiers in ultra wideband wavelength division multiplexing (UW-WDM) systems have recently received much more attention because of their greatly extended bandwidth and distributed amplification with the installed fiber as gain medium. It has been shown that the bandwidth of the amplifier can be further increased and gain spectrum can be tailored by using pumping with multiple wavelengths. In this paper, the distributed multi-pumping Raman amplifier has been studied and analyzed by testing two designed model of amplifier to obtain the gain of maximum flatness and bandwidth. Also we have investigated the effects of many parameters on the gain and bandwidth of Raman amplifier such as: pumping wavelength, offset wavelength, the relative refractive index difference and the number and location of the cascaded units used in the amplifier model design. The models is analyzed where six and eight Raman pumping of special pumping power and pumping wavelengths are lunched in the forward direction where each model is analyzed by two different way. The gain is computed over the spectral optical wavelengths (1.45μm ≤ λ signal ≤ 1.65μm). The differential gain of each unit of the amplifier is obtained according to the straight line-exponential model of a small maximum constant gain of $7.4×10^{-14}$ m/W over an optical wavelength interval of 16 nm.
Sponsorship	IEEE Commun. Soc.
Starting Page	329
Ending Page	336
File Size	3175381
Page Count	8
File Format	PDF
e-ISBN	9788996865032
DOI	10.1109/ICACT.2014.6779190
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-02-16
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Global IT Research Institute (GIRI)
Subject Keyword	Stimulated emission Optical fiber amplifiers Bandwidth Refractive index Laser excitation Optical amplifiers Educational institutions Ultra wideband-wavelength division multiplexing (UW-WDM) Distributed Raman amplifier Raman gain Raman Bandwidth
Content Type	Text
Resource Type	Article

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