Compact, High‐resolution Inverse‐Designed On‐Chip Spectrometer Based on Tailored Disorder Modes

Wisnu Hadibrata; Heeso Noh; Heming Wei; Sridhar Krishnaswamy; Koray Aydin

doi:10.1002/lpor.202000556

journal article Jul 09, 2021

Compact, High‐resolution Inverse‐Designed On‐Chip Spectrometer Based on Tailored Disorder Modes

Wisnu Hadibrata

Heeso Noh Heming Wei

Sridhar Krishnaswamy Koray Aydin

Laser & Photonics Reviews Vol. 15 No. 9 · Wiley

View at Publisher Save 10.1002/lpor.202000556

Abstract

AbstractIntegrated optical sensors have garnered much interest for lab‐on‐chip applications such as chemical and biological sensing and detection. Among various ways for detection schemes, spectral analysis performed by a spectrometer has shown great promise. Typically, such spectrometry is carried out in a relatively large device, owing to the fact that spectral resolution is often dictated by large optical path length. Here, a high‐resolution compact spectrometer utilizing random scattering events in a disordered medium is demonstrated. The spectrometer is inverse designed by objective‐first method and fabricated using two‐photon polymerization technique. The compact spectrometer consists of a disordered photonic structure and an inversed‐designed mode decomposer. A spectral resolution of 0.25 nm with a bandwidth of 30 nm in the near‐infrared regime is realized from a spectrometer occupying a relatively small footprint of 30 × 12.8 µm2. The proposed platform has a great potential to be used as a versatile lightweight and compact spectrometer for various applications including on‐chip spectrometer and sensing.

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Metrics

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References

Details

Published: Jul 09, 2021
Vol/Issue: 15(9)
License: View

Authors

W

Wisnu Hadibrata

Department of Electrical and Computer Engineering Northwestern University 2145 Sheridan Road Evanston IL 60208 USA

H

Heeso Noh

Department of Nano and Electronic Physics Kookmin University 77 Jeongneung‐Ro Seongbuk‐Gu Seoul 02707 South Korea

H

Heming Wei

Center for Smart Structures and Materials Northwestern University 2137 Tech Drive Evanston IL 60208 USA

S

Sridhar Krishnaswamy

Center for Smart Structures and Materials Northwestern University 2137 Tech Drive Evanston IL 60208 USA

K

Koray Aydin

Department of Electrical and Computer Engineering Northwestern University 2145 Sheridan Road Evanston IL 60208 USA

Cite This Article

Wisnu Hadibrata, Heeso Noh, Heming Wei, et al. (2021). Compact, High‐resolution Inverse‐Designed On‐Chip Spectrometer Based on Tailored Disorder Modes. Laser & Photonics Reviews, 15(9). https://doi.org/10.1002/lpor.202000556

Compact, High‐resolution Inverse‐Designed On‐Chip Spectrometer Based on Tailored Disorder Modes

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