All-optical modulation based on the phase-change materials combined with chains of silicon nanoantennas

Alisher Ibragimov; Vladislav Sitnianskii; Damir Yagudin; Alexander Shorokhov; Andrey Fedyanin

doi:10.1117/12.2642945

31 December 2022 All-optical modulation based on the phase-change materials combined with chains of silicon nanoantennas

Alisher Ibragimov, Vladislav Sitnianskii, Damir Yagudin, Alexander Shorokhov, Andrey Fedyanin

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Proceedings Volume PC12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII; PC1232205 (2022) https://doi.org/10.1117/12.2642945
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

Chalcogenide phase-change materials are showing promise for the development of non-volatile memory and neuro-inspired computing technologies. One of the key issues in these devices is the energy consumption for the write (crystallization) and erase (amorphization) process. In this work, we propose to combine a PCM with a subwavelength chain of silicon nanoantennas with variable sizes following a parabolic profile. In comparison with a common slab waveguide, it was numerically demonstrated that the nanoparticle chain requires 24 times less energy for the writing and 42 times less energy for erasing process due to slow- light behavior near the photonic band-gap edge, which enhances local electromagnetic fields in the structure. Achieved results could be used for neuromorphic silicon photonics applications.

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Citation Download Citation

Alisher Ibragimov, Vladislav Sitnianskii, Damir Yagudin, Alexander Shorokhov, and Andrey Fedyanin "All-optical modulation based on the phase-change materials combined with chains of silicon nanoantennas", Proc. SPIE PC12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII, PC1232205 (31 December 2022); https://doi.org/10.1117/12.2642945

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KEYWORDS

Phase shift keying

Modulation

Nanoantennas

Silicon

Crystals

Nanoparticles

Photonic crystals

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