Tuning the optical response of a dielectric grating using vanadium-dioxide as a phase-change material

Muhammad Fayyaz Kashif; Tiziana Stomeo; Francesco Guido; Maria Antonietta Vincenti; Irene Vassalini; Massimo De Vittorio; Antonella D'Orazio; Ivano Alessandri; Costantino De Angelis; Marco Grande; Domenico de Ceglia

doi:10.1117/12.2594682

1 August 2021 Tuning the optical response of a dielectric grating using vanadium-dioxide as a phase-change material

Muhammad Fayyaz Kashif, Tiziana Stomeo, Francesco Guido, Maria Antonietta Vincenti, Irene Vassalini, Massimo De Vittorio, Antonella D'Orazio, Ivano Alessandri, Costantino De Angelis, Marco Grande, Domenico de Ceglia

Author Affiliations +

Proceedings Volume 11796, Active Photonic Platforms XIII; 1179621 (2021) https://doi.org/10.1117/12.2594682
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

In this work, we demonstrate the modulation in optical response at visible wavelengths of a dielectric grating structure under a thermal stimulus. The grating structure is coated with a thin layer of vanadium dioxide (VO₂) which undergoes a phase transition from an insulator to a metal at a temperature of ~ 68°C. We report on the design, simulations, and characterization of the proposed structure. Measured optical response through experiments finds a good agreement with the predictions made by numerical simulations.

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Muhammad Fayyaz Kashif, Tiziana Stomeo, Francesco Guido, Maria Antonietta Vincenti, Irene Vassalini, Massimo De Vittorio, Antonella D'Orazio, Ivano Alessandri, Costantino De Angelis, Marco Grande, and Domenico de Ceglia "Tuning the optical response of a dielectric grating using vanadium-dioxide as a phase-change material", Proc. SPIE 11796, Active Photonic Platforms XIII, 1179621 (1 August 2021); https://doi.org/10.1117/12.2594682

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