Gain Flattened Erbium-Doped Fiber Amplifier Using Simple Equalizing Film

Authors: Chen, H.J.; Yang, X.L.

Source: International Journal of Infrared and Millimeter Waves, Volume 20, Number 12, December 1999 , pp. 2107-2112(6)

Publisher: Springer

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Abstract:



A simple scheme using a piece of SiO2 with an equalizing film platted on one side to get flattened gain spectrum of EDFA is studied in this paper. The film works as an inter-stage wavelength-selective filter, it is optimized to place at the middle of the EDF to suppress the ASE light generated by the first piece of EDF and pre-emphasize the signals before they enter the second EDF at the same time. The simulating results of 8 WDM signals show pretty good performance of gain flatness and noise figure as well. It is a facile equalization scheme for wide-band WDM systems.

Keywords: Equalizing film; Erbium-doped fiber amplifier; Gain; Noise figure

Document Type: Research Article

Affiliations: Institute of Optical Fiber Communications, Nanjing University of Posts and Telecommunications, Nanjing, 210003, People's Republic of China

Publication date: December 1, 1999

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