Design of λ/4 phase shifted DFB fibre Raman laser

Author

Hu, Youfang ; Broderick, Neil G R

Author_Institution

Optoelectron. Res. Centre, Univ. of Southampton, Southampton, UK

fYear

2009

fDate

14-19 June 2009

Firstpage

1

Lastpage

1

Abstract

We demonstrated an improved design of a DFB fibre Raman laser with an optimised lambda/4 phase-shifted grating structure, which enables highly efficient laser operation at low threshold with a relatively short cavity length. We modelled the laser´s time-dependent behaviour using the standard nonlinear coupled mode equations. Assuming Raman pumping from one side of the grating, we were able to numerically investigate the laser dynamics under CW pumping condition. The values of the parameters used in modelling are achievable in today´s mature fabrication technology.

Keywords

Raman lasers; coupled mode analysis; diffraction gratings; distributed feedback lasers; fibre lasers; laser beams; laser cavity resonators; nonlinear equations; optical design techniques; CW pumping; Raman pumping; grating structure; lambda/4 phase shifted DFB fibre Raman laser; laser cavity length; laser design; laser dynamics; laser operation; nonlinear coupled mode equations; time-dependent behaviour; Design optimization; Fiber gratings; Fiber lasers; Laser excitation; Laser modes; Nonlinear equations; Optical coupling; Optical design; Pump lasers; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-4079-5

Electronic_ISBN

978-1-4244-4080-1

Type

conf

DOI

10.1109/CLEOE-EQEC.2009.5196560

Filename

5196560