Optical coherence tomography system mass-producible on a silicon photonic chip

Optics Express
Simon SchneiderChristian Koos

Abstract

Miniaturized integrated optical coherence tomography (OCT) systems have the potential to unlock a wide range of both medical and industrial applications. This applies in particular to multi-channel OCT schemes, where scalability and low cost per channel are important, to endoscopic implementations with stringent size demands, and to mechanically robust units for industrial applications. We demonstrate that fully integrated OCT systems can be realized using the state-of-the-art silicon photonic device portfolio. We present two different implementations integrated on a silicon-on-insulator (SOI) photonic chip, one with an integrated reference path (OCTint) for imaging objects in distances of 5 mm to 10 mm from the chip edge, and another one with an external reference path (OCText) for use with conventional scan heads. Both OCT systems use integrated photodiodes and an external swept-frequency source. In our proof-of-concept experiments, we achieve a sensitivity of -64 dB (-53 dB for OCTint) and a dynamic range of 60 dB (53 dB for OCTint). The viability of the concept is demonstrated by imaging of biological and technical objects.

References

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Citations

May 23, 2018·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Hsern Ern Ivan TanRodney James Dilley
Dec 21, 2017·Journal of Biomedical Optics·Guillermo L MonroyStephen A Boppart
Aug 24, 2017·Journal of Biomedical Optics·Kai NeuhausMartin J Leahy
Sep 11, 2019·Optics Express·Xingchen JiMichal Lipson
Jun 1, 2019·Biomedical Optics Express·Masahiro YamanariYasushi Ikuno
Apr 1, 2020·Applied Optics·Aleksandar JovicPasqualina M Sarro

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