Abstract

Pumping erbium-doped fiber amplifiers (EDFAs) at 980 nm provides the best overall performance achievable. However, it is a relatively narrow band and the constraints this imposes on pump laser wavelength have been sources of continuing concern [1,2]. Recently it has been found that the restrictions are less severe than had been originally believed [3,4], and these relaxed tolerances may lower the overall cost of the EDFA as well as reduce the impact of temperature-induced wavelength drifts in the pump laser wavelength. To further elucidate this situation, we have examined the effects of pump wavelength, λp, on the signal output of both power and small-signal amplifiers. Experimental and theoretical investigations of the tradeoffs between gain and noise as a result of detuning the pump wavelength are presented, together with the first measurements of noise penalties for small-signal EDFAs induced by off-peak pump wavelengths. For both power and small-signal amplifiers, a decrease in gain of less than 1 dB, with an associated increase of <1 dB in noise figure, is observed when the pump is varied over a range of 30 nm centered at 979 nm.

© 1992 Optical Society of America

PDF Article
More Like This
Gain and Noise Performance of Erbium-Doped-Fiber Power Amplifiers Pumped Between 960 and 1000 nm

Jagannath Chirravuri, W. J. Miniscalco, T. Wei, and B. Pedersen
WD2 Integrated Photonics Research (IPR) 1992

Gain improvement at 1550 nm by detuned pumping of erbium-doped fiber amplifiers

B. Pedersen, J. Chirravuri, and W. J. Miniscalco
PD18 Optical Fiber Communication Conference (OFC) 1992

Gain and noise figure variations of an erbium doped fiber amplifier for pump wavelengths between 1460 and 1510 nm

RICHARD S. VODHANEL, A. YI-YAN, B. ENNING, and R. I. LAMING
WL4 Optical Fiber Communication Conference (OFC) 1990

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