A new design approach for fiber DFB lasers with improved efficiency

Author

Yelen, Kuthan ; Hickey, Louise M B ; Zervas, Mikhail N.

Author_Institution

Optoelectronics Res. Centre, Univ. of Southmapton, Southampton, UK

Volume

40

Issue

6

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

711

Lastpage

720

Abstract

The standard distributed feedback (DFB) laser optimization method is critically investigated and a new design approach based on the effective cavity length is presented. By applying this method in an erbium-ytterbium co-doped fiber, the pump-to-signal conversion ratio is increased by 40% for the same total device length and pumping conditions. The laser with the proposed design is produced and the theoretical results are verified by the experimental work.

Keywords

distributed feedback lasers; erbium; fibre lasers; laser cavity resonators; optical pumping; optimisation; ytterbium; distributed feedback fiber lasers; effective cavity length; erbium-ytterbium codoped fiber; fiber DFB lasers; pump-to-signal conversion; standard distributed feedback laser optimization method; Distributed feedback devices; Erbium-doped fiber lasers; Fiber lasers; Gratings; Laser feedback; Laser theory; Optical design; Optical feedback; Optical fiber polarization; Pump lasers; DFB; Distributed feedback; erbium; gratings; lasers; optical fiber lasers; ytterbium;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2004.828257

Filename

1303785