Integrated photonics by 3D microprinting
The design freedom of Two-Photon Polymerization enables to additively print optical interfaces, waveguides and hybrid refractive-diffractive optics on various prepatterned substrates. Benefit from the high-precision positioning systems in Nanoscribe’s technology to precisely integrate complex microstructures where needed.
Microfabrication of complex optical structures on pre-existing patterns
The miniaturization of optical and optoelectronic components is decisive for enabling data communication and telecommunication as well as sensing and imaging applications. The realization of freeform lenses, mirrors and other novel designs by conventional micro-scale 3D printing lacks sufficient resolution and optical surface quality. Two-Photon Polymerization allows to print optically transparent microstructures with smooth surfaces along a lean process. The technology is not only used to fabricate microparts on plane substrates but also to directly print complex structures precisely on pre-existing patterns and topographies, e.g. on photonic integrated circuits, on optical fiber tips and on premanufactured wafers. This method enables miniaturization and assembly-free fabrication of optical interfaces with high-precision in-situ 3D microprinting on various materials, such as InP, SOI and Si3N4.
For example, it is used to print freeform microoptical components directly onto chips, enabling the connection of multiple fibers to a chip. The light in this case must be collected, redirected parallel to the chip plane and then transferred to a narrow waveguide. For this purpose, the inherent design freedom of Two-Photon Polymerization enables to combine elements such as a spherical lens to collect light from the fiber facet with a taper to transfer it into the waveguide. Using the high-resolution process camera and a programing interface of the printer, an automatic alignment of the coupling structures to the waveguides with alignment accuracy in the order of 100 nm can be achieved.
With Nanoscribe Photonic Professional GT2, our customers in science and industry print microoptical structures directly onto photonic components, thus enabling edge and surface coupling with great success. For its new Two-Photon Grayscale Lithography system Quantum X, Nanoscribe develops advanced processes for photonic packaging, see research projects MiLiQuant, HandheldOCT and PHOENICS.
You want to assess the opportunities for your project in integrated photonics? Explore the application options of our 3D Microfabrication solutions. Have a look at the 10 most recent scientific publications in integrated photonics.
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