Thermally-controlled transparency in multi-ring cascaded filters

Lorenzo Tunesi; Andrea Carena; Vittorio Curri; Paolo Bardella

doi:10.1117/12.3002558

12 March 2024 Thermally-controlled transparency in multi-ring cascaded filters

Lorenzo Tunesi, Andrea Carena, Vittorio Curri, Paolo Bardella

Proceedings Volume 12891, Silicon Photonics XIX; 128910N (2024) https://doi.org/10.1117/12.3002558
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

We propose a novel control scheme to induce transparency through thermal tuning in multi-stage cascaded ring structures. Higher-order MicroRing Resonator structures are fundamental blocks for high Q-factor filtering as well as wavelength-sensitive applications. Through the proposed thermal control scheme, which does not require additional heating elements with respect to the traditional calibration and uncertainty-compensation setup, we can manage both the central wavelength of the add-drop filter, as well as toggle the transparent state. Through this technique the add-drop filter can be switched off, allowing the signal to pass through without frequency-dependent effects and just introducing flat-band crosstalk.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lorenzo Tunesi, Andrea Carena, Vittorio Curri, and Paolo Bardella "Thermally-controlled transparency in multi-ring cascaded filters", Proc. SPIE 12891, Silicon Photonics XIX, 128910N (12 March 2024); https://doi.org/10.1117/12.3002558

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