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arXiv · 2504.05505

On-chip arbitrary dispersion engineering with deep photonic networks

Kazim Gorgulu·Aycan Deniz Vit·Ali Najjar Amiri·Emir Salih Magden
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Abstract

We demonstrate the design and optimization of on-chip arbitrary dispersion profiles using deep photonic networks constructed from custom-designed Mach-Zehnder interferometers. These photonic networks employ optimizable waveguide tapers, enabling precise engineering of wavelength-dependent dispersion profiles. We experimentally demonstrate a proof-of-concept two-port photonic network that exhibits a highly nonintuitive triangular dispersion profile over the wavelength range of 1.54 $\mu\mathrm{m}$ to 1.58 $\mu\mathrm{m}$ while simultaneously achieving a flat-band transmission with an insertion loss of less than 0.7 dB. We also illustrate the potential of multi-port photonic networks to enhance design freedom for more complex and customizable dispersion profiles, enabling new possibilities for on-chip dispersion engineering.

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Kazim Gorgulu, Aycan Deniz Vit, Ali Najjar Amiri, Emir Salih Magden. 2025-04-07. On-chip arbitrary dispersion engineering with deep photonic networks. https://doi.org/10.1364/ol.564441

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