Frozen mode in coupled single-mode waveguides with gratings
Optics
2026-03-12 v1
Abstract
We present a systematic methodology for designing slow-light photonic integrated circuits with a frozen mode based on a special kind of exceptional point of degeneracy (EPD) of order three named stationary inflection points (SIPs). This is realized through three-way coupled waveguides with lateral gratings operating at telecommunication wavelengths. We provide two designs and analyze sensitivity to geometric perturbations. We have fabricated a periodic waveguide with integrated taper loads and demonstrate reasonable agreement with full-wave simulations. These findings confirm the feasibility of integrating SIP-based delay functionalities in standard silicon photonic platforms.
Keywords
Cite
@article{arxiv.2603.10286,
title = {Frozen mode in coupled single-mode waveguides with gratings},
author = {Albert Herrero-Parareda and Nathaniel Furman and Bradley J. Thompson and Ricky Gibson and Ilya Vitebskiy and Filippo Capolino},
journal= {arXiv preprint arXiv:2603.10286},
year = {2026}
}
Comments
8 pages, 8 figures