Optics Express

Noise figure measurements on Nd and Yb doped double-clad fiber amplifiers

Peter W. Wessels, Carsten Fallnich

Published Jun 30, 2003• 4 citations

Abstract

We present comparative noise figure measurements on neodymium and ytterbium doped double-clad fiber amplifiers. While the neodymium doped amplifier showed the quantum-limited noise figure of 3 dB, the ytterbium doped amplifier exhibited excess noise due to its three-level system. We compared optical and electrical methods with respect to the accuracy and the suitability for high power measurements.

DOI: 10.1364/oe.11.001531

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