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Recent Patents on Electrical & Electronic Engineering

Editor-in-Chief

ISSN (Print): 2213-1116
ISSN (Online): 2213-1132

A Review of Recent Development of Efficient High-Power Continuous- Wave Er-Yb Codoped Fiber Amplifiers

Author(s): Yang He, Qun Han, Jiping Ning and Hai Xiao

Volume 5 , Issue 2 , 2012

Page: [96 - 102] Pages: 7

DOI: 10.2174/2213111611205020096

Price: $65

Abstract

In this paper, we will review the recent developments of high-power continuous-wave (CW) Er-Yb codoped fiber amplifiers (EYDFAs). Several related patents and a couple of methods of improving the performance of high-power EYDFAs are reviewed. Current research results show that the Yb-band amplified spontaneous emission (Yb-ASE) is the main reason that limits the efficiency and stability of an EYDFA at high pump power. Several methods and experimental results dedicated to suppress the Yb-ASE are introduced. Current and potential future developments of high-power EYDFAs are summarized in the last part of this paper.

Keywords: Erbium, fiber amplifiers, fiber lasers, MOPA, ytterbium, HIGH-POWER, Typical MOPA System, Improvement of Beam Quality


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