Dual-band Photonic Filters with Wide Tunable Range Using Chirped Sampled Gratings
Abstract
We have developed a photonic filter featuring dual independently tunable passbands. Employing the reconstruction equivalent-chirp technique, we designed linearly chirped sampled Bragg gratings with two equivalent phase shifts positioned at 1/3 and 2/3 of the cavity, thus introducing two passbands in the +1st channel. Leveraging the significant thermo-optic effect of silicon, dual-band tuning is achieved via micro-heaters integrated on the chip surface. By tuning the injection currents ranging from 0 to 35 mA into the micro-heaters, the filter exhibits a wide range of dual-wavelength filtering performance, with the frequency interval between the two passbands adjustable from 37.2 GHz to 186.1 GHz.
Keywords
Cite
@article{arxiv.2410.08248,
title = {Dual-band Photonic Filters with Wide Tunable Range Using Chirped Sampled Gratings},
author = {Siemng Zhu and Bocheng Yuan and Weiqing Cheng and Yizhe Fan and Yiming Sun and Mohanad Al-Rubaiee and Jehan Akbar and John H. Marsh and Lianping Hou},
journal= {arXiv preprint arXiv:2410.08248},
year = {2024}
}
Comments
5 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:2410.07788