On-chip digitally-tunable dispersion management

Shujun Liu; Dajian Liu; Zejie Yu; Liu Liu; Yaocheng Shi; Daoxin Dai

doi:10.1117/12.2672783

10 April 2023 On-chip digitally-tunable dispersion management

Shujun Liu, Dajian Liu, Zejie Yu, Liu Liu, Yaocheng Shi, Daoxin Dai

Proceedings Volume 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022); 1261406 (2023) https://doi.org/10.1117/12.2672783
Event: 14th International Photonics and Optoelectronics Meeting (POEM 2022), 2022, Wuhan, China

Abstract

Dispersion management is highly desired in various applications such as microwave photonics and optical communication, helping reduce the delay disorder and modulate the pulse profiles. In this paper, we propose a new concept of digitally-tunable dispersion management. and a digitally-tunable dispersion controller (DTDC) on silicon composed of optical switches and chirped multimode waveguide gratings (CMWGs) is demonstrated for the first time. All the CMWGs are identical and have the same dispersion value of D₀ and dispersion ranging from 0 to (2^N-1)D₀ can be tuned with a step of D₀ by switching the propagation path of light. More importantly, the DTDC is circulator-free. finally, a DTDC is realized with four stages of 2-mm-long CMWGs, enabling the dispersion tuning from 0 to 42.8 ps/nm with a step of 2.82 ps/nm.

Citation Download Citation

Shujun Liu, Dajian Liu, Zejie Yu, Liu Liu, Yaocheng Shi, and Daoxin Dai "On-chip digitally-tunable dispersion management", Proc. SPIE 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022), 1261406 (10 April 2023); https://doi.org/10.1117/12.2672783

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KEYWORDS

Dispersion

Optical switching

Fabrication

Waveguides

Bragg gratings

Reflection

Light wave propagation

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