Selective excitation of vortex fibre modes using a spatial light modulator

Details Selective excitation of vortex fibre modes using a spatial light modulator Selective excitation of vortex fibre modes using a spatial light modulator

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005njph....7..125b&link_type=abstract

New Journal of Physics, Volume 7, Issue 1, pp. 125 (2005).

Physics

6

Scientific paper

A controllable excitation of fibre modes is examined theoretically and experimentally. We verify that the modes of a few-mode fibre can be selectively excited by means of a spatial light modulation of a laser beam focused to the fibre. The proposed method is demonstrated on a dynamical switching, phase coupling and weighted mixing of LP01, LP11 and LP21 modes, achieved by an exchange of computer-generated holograms sent to the spatial light modulator. The possibility to excite a vortex fibre mode with a well-defined azimuthal phase dependence is also verified. It is promising for an encoding and transfer of information by vortices in fibre communications.

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