Numerical simulations of transverse mode coupling in large-mode-area fibre amplifiers

Author

Andermahr, N. ; Fallnich, C.

Author_Institution

Laser Zentrum Hannover, Hannover, Germany

fYear

2009

fDate

14-19 June 2009

Firstpage

1

Lastpage

1

Abstract

In this paper, we have shown experimentally that transverse modes in a fibre amplifier prefer to have orthogonal polarization states at high gain. In this talk we present numerical simulations of mode interaction that support this observation. The propagation of the electrical field E is described by the Helmholtz equation. We discuss physical reasons for transverse mode coupling in active and passive fibres and describe how both types of mode coupling can be implemented in our numerical model.

Keywords

Helmholtz equations; numerical analysis; optical fibre amplifiers; optical fibre couplers; Helmholtz equation; electrical field; large-mode-area fibre amplifier; numerical simulation; orthogonal polarization states; transverse mode coupling; Equations; Fiber lasers; Laser modes; Numerical simulation; Optical fiber polarization; Optical propagation; Optimized production technology; Power amplifiers; Power generation; Refractive index;

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.2009.5192840

Filename

5192840