Open AccessCoherent combining of 49 laser beams from a multiple core optical fiber by a spatial light modulator
Author(s) -
Jérôme Lhermite,
Eric Suran,
Vincent Kermène,
Frédéric Louradour,
Agnès DesfargesBerthelemot,
Alain Barthélémy
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.004783
Subject(s) - optics , spatial light modulator , core (optical fiber) , optical modulator , fiber laser , materials science , optical fiber , phase modulation , optoelectronics , physics , phase noise
We report co-phasing of 49 beams from a multicore fiber based on a spatial light modulator using a simple feedback loop control. A specific fiber of 7x7 Germanium doped cores was fabricated. The power carried by the far field main lobe of the phased array, in the continuous wave regime, amounts to 96% of its theoretical value. Femtoseconde pulses were also phase-locked with the same device configuration.