Fast thermo-optic switching on silicon nitride platform through parity-time symmetry breaking
Optics
2024-08-28 v1 Applied Physics
Abstract
This work demonstrates a fast thermo-optic switching mechanism on silicon nitride on insulator platform leveraging parity-time symmetry breaking. The cladding-free design enables low-loss optical propagation in a partially metal-covered waveguide, with the same metal layer serving as an integrated heater for rapid phase tuning. The fabricated device exhibits an 8.5 {\mu}s rise time for a {\pi} phase shift, despite the weak thermo-optic coefficient in silicon nitride. Additionally, the impact of thermal cross-talk is investigated and an insertion loss as low as 0.39 dB for a 100-{\mu}m-long heater-waveguide section is demonstrated.
Keywords
Cite
@article{arxiv.2408.15139,
title = {Fast thermo-optic switching on silicon nitride platform through parity-time symmetry breaking},
author = {Ravi Pradip and Venkata Sai Akhil Varri and Liam McRae and Frank Brückerhoff-Plückelmann and Daniel Wendland and Anna P. Ovvyan and Shabnam Taheriniya and Wolfram Pernice and Simone Ferrari},
journal= {arXiv preprint arXiv:2408.15139},
year = {2024}
}
Comments
15 pages, 6 figures