Study Of Single and Multi Wavelength(WDM) EDFA Gain Control Methods

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-5                       
Year of Publication : 2013
Authors : Prateeksha Sharma , Bipan Kaushal , Shrija Jain


Prateeksha Sharma , Bipan Kaushal ,Shrija Jain. "Study Of Single and Multi Wavelength(WDM) EDFA Gain Control Methods". International Journal of Engineering Trends and Technology (IJETT). V4(5):1424-1427 May 2013. ISSN:2231-5381. published by seventh sense research group.


The purpose of this paper is to provide an introduction to EDFA and discussing various gain flattening techniques. EDFA is widely used amplifier due to its transient suppression, wide band variable gain operation. An amplifier should be dynamically configured over a wide range to support different span lengths. We focus on building dynamic reconfigurable optical layers to facilitate explosive growth in IP traffic. Wavelength selective switch devices provides dynamic configurability as we can add or drop the wav elengths at the nodes thus increasing network flexibility, improving bandwidth utilization and reducing complexity. Electronic feed - back control is designed for achieving flat gain at the top of required gain range. The paper begins with the basics of tech nology and then goes on to discuss gain fluctuation and various techniques for gain flattening for single and multi - wavelength system.


[1] M. Zirngibl, “ Gain Control in Erbium - Doped Fiber Amplifiers by an All - Optical Feedback Loop ”, Electron. Lett. 27 , 560 - 561 (1991 )
[2] K. Motoshima, et al, “ Dynamic compensation of transient gain saturation in erbium - doped fiber amplifiers by pump feedback control ,” Photon. Technol. Lett . 5 , 1423 – 1426 (1 993).
[3] S.W. Harun, S.K. Low, P. Poopalan, et al., IEEE Photon. Technol. Lett. 14 (3) (2002) 293. E. Desurvire, IEEE Photonic. Technol. Lett. 1 (1989) 196.
[4] H. Hatayama, C. Hirose, K. Koyama, N. Akasaka, M. Nishimura, Opt. Fiber Commun. Conf. 2 (2000) 142.
[5] C.R . Doerr, R. Pafchek, L.W. Stulz, IEEE Photonic. Technol. Lett. 14 (2002) 334.
[6] Chinlon Lin, Broadband Optical Access Networks and Fiber - to - the - Home: Systems Technologies and Deployment Strategies, Wiley, 2006.
[7] I. Day, I. Evans, A. Knights, F. Hopper, S. Roberts, J. Johnston, S.Day, J. Luff, H. Tsang, M. Asghari, Opt. Fiber Commun. Conf.(2003) 249.
[8] .M. Digonnet, editor, “ Selected Papers on Rare - Earth - Doped Fibre Laser Sources and Amplifiers ”, SPIE vol. MS37 , 199 2.
[9] A. Yariv, Quantum Electronics , 3rd ed. (John Wiley & Sons, 1989), Section 21. 1, p.572.
[10] A. Cavaciuti, B. Sordo, " Noise measurements in EDFAs ", Conference on Optcial Fiber Communications, OFC`94 Technical Digest, paper WM9, 163 (1994)

EDFA, Pumping, Isolator, WDM, ASE, Optical Fiber Communications