Design principles of tunable optical filters using phase change materials

Remona Heenkenda; Andrew Sarangan

doi:10.1117/12.2647782

31 January 2023 Design principles of tunable optical filters using phase change materials

Remona Heenkenda, Andrew Sarangan

Proceedings Volume 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022; 124770N (2023) https://doi.org/10.1117/12.2647782
Event: International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors, 2022, Boston, Massachusetts, United States

Abstract

When designing static filters such as edge, line, bandpass etc.. the conventional approach relies on exploiting the resonances and bandgaps (stop-bands) that occur inside a multilayer thin film structure. When designing for tunability, a different approach is needed, arising primarily from the fact that the refractive index changes that occur in a phase change material (PCM) are generally complex-valued. In this paper, we will review the principles and strategies for designing tunable optical filters.

Citation Download Citation

Remona Heenkenda and Andrew Sarangan "Design principles of tunable optical filters using phase change materials", Proc. SPIE 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022, 124770N (31 January 2023); https://doi.org/10.1117/12.2647782

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