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Updated: Feb 6, 2026

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
Published on: May 12, 2020
Reusable thin-film all-polymer couplers for vertical light coupling to single-mode waveguides
Abstract:
A reusable all-polymer coupler using gratings and tapers for vertical light coupling to single-mode planar waveguides is demonstrated. Numerical simulations are performed to optimize the tapers and gratings to increase the coupling efficiency. A hot-embossing replication technique is used for the fabrication of waveguide sensors and gratings, which is adaptable to mass production, such as roll-to-roll processes. The external grating is reversibly bonded to the waveguide via van der Waals forces, and the thus realized re-usability reduces the fabrication costs. The utility of the structure is shown by using these grating couplers for testing of asymmetric Mach-Zehnder interferometers.
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