Abstract

Erbium doped fiber amplifiers can achieve a high gain over more than 40nm bandwidth. However, they suffer from a non uniformity of the gain, and this is particularly detrimental to WDM applications. As they propagate through a chain of EDFAs, the channels at different wavelengths will accumulate increasing discrepancies between them in terms of gain and SNR. In order to make it possible to chain EDFAs in a WDM environment, the EDFAs should have ideally both a flattened gain and SNR. A method as proposed in [1] and [2] admittedly cannot achieve equalization of both gain and SNR. On the other hand, some EDFAs are optimized for WDM by adjusting the characteristic and length of the fiber and the pump power [3], but in that case they usually show a flattened gain for a small range of input power.

© 1995 Optical Society of America

PDF Article
More Like This
Active equalization of non-uniform EDFA gain by using multiple AOTF passbands for megameter WDM transmission

S.-M. Hwang and A. E. Willner
CTuS3 Conference on Lasers and Electro-Optics (CLEO) 1995

Optimum Gain Equalization for WDM In-line Multistage Amplifier Systems

Mitsunori Fukutoku, Kazuhiro Oda, and Hiromu Toba
SaB4 Optical Amplifiers and Their Applications (OAA) 1995

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription