Fiber DFB lasers with ultimate efficiency

Author

Yelen, K. ; Zervas, M.N. ; Hickey, L.M.B.

Author_Institution

Optoelectronics Res. Centre, Univ. of Southampton, UK

Volume

23

Issue

1

fYear

2005

Firstpage

32

Lastpage

43

Abstract

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.

Keywords

diffraction gratings; distributed Bragg reflector lasers; erbium; fibre lasers; laser cavity resonators; optical pumping; ytterbium; DFB lasers; Er-Yb codoped fiber; distributed feedback laser; fiber lasers; grating profile; optimum signal distribution; pump-to-signal conversion efficiency; pumping scheme; Design methodology; Distributed feedback devices; Fiber lasers; Gratings; Laser feedback; Laser theory; Optical design; Optical fiber devices; Optical fiber theory; Pump lasers; Distributed feedback (DFB) lasers; erbium; optical fiber lasers; optical fiber theory; ytterbium;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2004.840037

Filename

1377429