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Proceedings Paper

Comparison of the noise performance in erbium- and praseodymium-doped fiber amplifiers
Author(s): Jun Bao; Steven P. Bastien; Harish R. Sunak
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Paper Abstract

The erbium-doped fiber amplifier (EDFA) operating at 1.5 micrometers wavelength and the praseodymium-doped fiber amplifier (PDFA) at 1.3 micrometers wavelength are promising components for optical fiber communications due to their high gain, high saturation powers, low noise and low crosstalk. In this paper, using a comprehensive model which takes into account the spectroscopic properties of the fiber amplifiers, we have analyzed the noise performance in EDFAs and PDFAs under different operating conditions. We found that the noise figures (NF) is strongly signal wavelength dependent due to lower population inversion in EDFAs for 1.48 micrometers pumping and due to ground state absorption (GSA) in PDFAs. Outside of the GSA wavelengths, the noise performance of the PDFA is comparable with that of EDFA pumped in 0.98 micrometers band. We have confirmed that the NF is independent of numerical aperture (NA) for both amplifiers. The improvement in noise performance due to the addition of an inline isolator and an optical fiber filter has also been studied.

Paper Details

Date Published: 23 March 1993
PDF: 11 pages
Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); doi: 10.1117/12.141130
Show Author Affiliations
Jun Bao, Univ. of Rhode Island (United States)
Steven P. Bastien, EDFA Consultants (United States)
Harish R. Sunak, Univ. of Rhode Island and EDFA Consultants (United States)

Published in SPIE Proceedings Vol. 1789:
Fiber Laser Sources and Amplifiers IV
Michel J. F. Digonnet; Elias Snitzer, Editor(s)

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