Title :
Numerical simulations of transverse mode coupling in large-mode-area fibre amplifiers
Author :
Andermahr, N. ; Fallnich, C.
Author_Institution :
Laser Zentrum Hannover, Hannover, Germany
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;
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
DOI :
10.1109/CLEOE-EQEC.2009.5192840
