A high-precision silicon-on-insulator position sensor

Autor: Paul Beck, Laura C. Wynne, Simone Iadanza, Liam O’Faolain, Sebastian A. Schulz, Peter Banzer
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: APL Photonics, Vol 8, Iss 4, Pp 046113-046113-7 (2023)
Druh dokumentu: article
ISSN: 2378-0967
DOI: 10.1063/5.0133968
Popis: Integrated photonic devices provide significant advantages over their conventional counterparts, such as a drastically reduced footprint as well as compatibility with other photonic or electronic circuitry. In this work, we present a high-precision optical position sensor fabricated on a silicon-on-insulator platform. The sensor relies on the principle of position-dependent directional waveguide coupling upon excitation of a monolithically integrated scatterer with a tightly focused polarization-tailored beam. We demonstrate a spatial resolution of 7.2 nm, corresponding to approximately λ/200.
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