title: Collective coherent phase combining of 64 fibers.
abstract: A new architecture for active coherent beam combining of a large number of fibers is demonstrated. The approach is based on a self-referenced quadriwave shearing interferometer and active control with arrays of electro-optic ceramic modulators. Coherent phase combining of 64 independent amplified fibers is obtained. This is to our knowledge the highest reported number of combined fibers. A Strehl ratio degradation less than 2dB is achieved with a residual phase error <λ/10 rms.
authors.affiliation: Thales Research & Technology, Palaiseau, France. Jerome.bourderionnet@thalesgroup.com
authors.forename: Jérome
authors.initials: J
authors.lastname: Bourderionnet
authors.forename: Cindy
authors.initials: C
authors.lastname: Bellanger
authors.forename: Jérome
authors.initials: J
authors.lastname: Primot
authors.forename: Arnaud
authors.initials: A
authors.lastname: Brignon