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arXiv · 2410.08248

Dual-band Photonic Filters with Wide Tunable Range Using Chirped Sampled Gratings

Siemng Zhu·Bocheng Yuan·Weiqing Cheng·Yizhe Fan·Yiming Sun·Mohanad Al-Rubaiee·Jehan Akbar·John H. Marsh·Lianping Hou
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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.

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Siemng Zhu, Bocheng Yuan, Weiqing Cheng, Yizhe Fan, Yiming Sun, Mohanad Al-Rubaiee, Jehan Akbar, John H. Marsh, Lianping Hou. 2024-10-10. Dual-band Photonic Filters with Wide Tunable Range Using Chirped Sampled Gratings. https://arxiv.org/abs/2410.08248

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