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Double waveguide couplers produced by simultaneous femtosecond writing
Matthias Pospiech1, Moritz Emons, Andy Steinmann
1Institute of Quantum Optics, Leibniz UniversitäHannover, Welfengarten 1, D-30167 Hannover, Germany. pospiech@iqo.uni-hannover.de
Optics Express
|March 5, 2009
Summary
Researchers developed a new femtosecond laser writing method for fused silica waveguide couplers. This technique enables the simultaneous creation of complex, multi-waveguide devices with dynamic separation in a single writing pass.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
- Laser Physics
Background:
- Waveguide coupler devices are essential components in integrated optics.
- Fabrication of complex waveguide structures often requires multiple steps or specialized equipment.
Purpose of the Study:
- To introduce a novel method for fabricating waveguide coupler devices in fused silica.
- To demonstrate the capability of creating complex, multi-waveguide structures with dynamic separation.
Main Methods:
- Combining beam shaping with femtosecond laser writing.
- Utilizing a programmable phase modulator for dynamic phase-pattern variation during writing.
- Simultaneous writing of multiple waveguides with changing separation in a single sweep.
Main Results:
- Successful fabrication of waveguide coupler devices in fused silica.
- Demonstrated ability to create complex devices with simultaneously written waveguides.
- Investigated the guiding properties and coupling behavior of the fabricated waveguides.
Conclusions:
- The proposed method offers an efficient way to create complex waveguide coupler devices.
- Dynamic phase-pattern variation allows for novel device designs and fabrication possibilities.
- This technique advances the fabrication of integrated optical components.
