title: Double waveguide couplers produced by simultaneous femtosecond writing.
abstract: We report on a novel method to create waveguide coupler devices in fused silica by combining the technique of beam shaping with femtosecond laser writing. The method is based on a programmable phase modulator and a dynamic variation of the phase-pattern during the writing process. The major advantage is the possibility to create complex devices in a single sweep by simultaneously writing two or more waveguides with changing separation. The guiding properties and the coupling behavior between the waveguides are investigated.
authors.affiliation: Institute of Quantum Optics, Leibniz UniversitäHannover, Welfengarten 1, D-30167 Hannover, Germany. pospiech@iqo.uni-hannover.de
authors.forename: Matthias
authors.initials: M
authors.lastname: Pospiech
authors.forename: Moritz
authors.initials: M
authors.lastname: Emons
authors.forename: Andy
authors.initials: A
authors.lastname: Steinmann
authors.forename: Guido
authors.initials: G
authors.lastname: Palmer
authors.forename: Roberto
authors.initials: R
authors.lastname: Osellame
authors.forename: Nicola
authors.initials: N
authors.lastname: Bellini
authors.forename: Giulio
authors.initials: G
authors.lastname: Cerullo
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner