Double waveguide couplers produced by simultaneous femtosecond writing

Institute of Quantum Optics, Leibniz UniversitäHannover, Welfengarten 1, D-30167 Hannover, Germany.
Optics Express (Impact Factor: 3.53). 04/2009; 17(5):3555-63. DOI: 10.1364/OE.17.003555
Source: PubMed

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.

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