Fiber DFB lasers with ultimate efficiency

A novel method for designing distributed feedback (DFB) lasers with ultimate efficiency is presented. The method is based on the calculation of the optimum signal distribution for a given pumping scheme and derivation of the grating profile that sustains this distribution so that at every point in t...

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Bibliographic Details
Published in:Journal of lightwave technology 2005-01, Vol.23 (1), p.32-43
Main Authors: Yelen, K., Zervas, M.N., Hickey, L.M.B.
Format: Article
Language:English
Subjects:
Design methodology
Distributed feedback (DFB) lasers
Distributed feedback devices
erbium
Fiber lasers
Gratings
Laser feedback
Laser theory
Optical design
Optical fiber devices
optical fiber lasers
Optical fiber theory
Pump lasers
ytterbium
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Description
Summary:A novel method for designing distributed feedback (DFB) lasers with ultimate efficiency is presented. The method is based on the calculation of the optimum signal distribution for a given pumping scheme and derivation of the grating profile that sustains this distribution so that at every point in the cavity pump-to-signal conversion efficiency is maximum. Theory applied experimentally in Er-Yb co-doped fiber resulting in a 57% increase in the efficiency with 10% shorter device length compared with standard optimized co-pumped designs.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2004.840037