International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569


Review of Erbium-doped fiber amplifier

A. W. Naji1, B. A. Hamida1, X. S. Cheng3 , M. A. Mahdi2, S. Harun3, S. Khan1, W. F. AL-Khateeb1, A. A. Zaidan4,5,6*, B. B. Zaidan4,5,6 and H. Ahmad3        
1Faculty of Engineering, International Islamic University Malaysia (IIUM), 53100, Kuala Lumpur, Malaysia. 2Faculty of Engineering, University Putra Malaysia (UPM), Serdang, 43400, Selangor, Malaysia. 3Faculty of Engineering, University of Malaya (UM), 50603, Kuala Lumpur, Malaysia. 4Faculty of Engineering, Multimedia University, 63100, Selangor, Malaysia. 5Predictive Intelligence Research Cluster, Sunway University, Jalan Universiti, Bandar Sunway, 46150 Petaling Jaya, Selangor, Malaysia. 6Institute of Postgraduate Studies/Research and Development Group/Al-Madinah International University, Malaysia.
Email: [email protected]

  •  Accepted: 13 July 2011
  •  Published: 23 September 2011


Data communication systems are increasingly employing optical fiber communication systems (OFCS) as the transmission paths for information. Various types of optical amplifiers have been developed in OFCS to amplify optical signals. In particular, the Erbium-doped fiber amplifier (EDFA) is one example of an optical fiber amplifier that is widely known for use in amplifying optical signals. The most significant points in any optical amplifier design are gain and noise figure (NF). They are closely related to each other. Low NF and high gain are the main features for optimum amplifier (Desurvire, 1987). On the other hand, the gain and NF have very strong impact with EDFA’s configurations. Therefore, changes in EDFA’s configuration play very important role during the designing of optical amplifier. The literature shows that there is no study that has been done to review the EDF configuration. Therefore, in this paper we are presenting an overview of most of the EDFA’s configurations that have been proposed in order to provide the researchers with a clear view of what has been done in this field.


Key words: Communication system, optical amplifier, EDFA configurations, noise figure, gain amplifier, rare-earth doped fibers, atomic systems, EDFA’s position.