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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.9 P.1130~1134

http://doi.org/10.1631/jzus.2004.1130


A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier


Author(s):  QIANG Ze-xuan, HE Sai-ling, ZHANG Xu-liang, SHEN Lin-fang

Affiliation(s):  Center for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Joint Laboratory of Optical Communications, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zx_qiang@yahoo.com.cn

Key Words:  Erbium doped fiber amplifier, Three-stage, Pump, L-band, Fiber optical communication


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QIANG Ze-xuan, HE Sai-ling, ZHANG Xu-liang, SHEN Lin-fang. A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier[J]. Journal of Zhejiang University Science A, 2004, 5(9): 1130~1134.

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Abstract: 
The configuration of the novel three-stage l-band erbium-doped fiber amplifier with very large and flat gain and very low noise figure presented in this paper uses the forward ASE (amplified spontaneous emission) from the first section of the EDF (erbium-doped fiber) and the backward ASE from the third section of the EDF (both serve as the secondary pump sources of energy) to pump the second EDF. To improve the pump efficiency, the power of the pump is split into two parts (with a ratio of e.g. 2:7). The characteristics of this l-band EDFA are studied on the basis of the Giles Model with ASE.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Becker, P.C., Olsson, N.A., Simpson, J.R., 1999. Erbium-Doped Fiber Amplifiers: Fundamentals and Technology. Academic Press, San Diego, USA, p.258-259.

[2] Desurvier, E.D., 1994. Erbium-doped Fiber Amplifiers: Principles and Applications. A Wiley-Interscience, New York, p.478-485.

[3] Giles, C.R., Desurvire, E.D., 1991. Modeling erbium-doped fiber amplifiers. J. Lightwave Technol., 9(2):271-282.

[4] Harun, S.W., Poopalan, P., Ahmad, H., 2002. Gain enhancement in L-Band EDFA through a Double-pass technique. IEEE Photon. Technol. Lett., 14(3):296-297.

[5] Lee, J., Ryu, U.C., Ahn, S.J., Park, N., 1999. Enhancement of power conversion efficiency for a L-band EDFA with a secondary pumping effect in the unpumped EDF section. IEEE Photon. Technol. Lett., 11(1):42-44.

[6] Mahdi, M.A., Adikan, F.R.M., Poopalan, P., Selvakennedy, S., Chan, W.Y., Ahmad, H., 2000. Long-wavelength EDFA enhancement through 1550 nm band signal injection. Opt. Commun., 176(3):125-129.

[7] Massicott, J.F., Wyatt, R., Ainsile, B.J., Craig-ryan, S.P., 1990. Efficient, high power, high gain, Er3+ doped silica fiber amplifier. Electron. Lett., 26(14):1038-1039.

[8] Yamashita, S., Okoshi, T., 1992. Performance improvement and optimization of fiber amplifier with midway isolator. IEEE Photon. Technol. Lett., 4(11):1276-1278.

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