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5 March 2022 All-fiber, dynamically tunable, polarization filter based on liquid crystal filled nano-channels
Abdullah Rahnama, Tigran Dadalyan, Keivan Mahmoud Aghdami, Tigran Galstian, Peter R. Herman
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Proceedings Volume PC12012, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XV; PC120120K (2022) https://doi.org/10.1117/12.2609196
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Point-by-point femtosecond laser writing of filaments was used to open high aspect ratio nano-holes transversely through the core of a single-mode telecommunication fiber (SMF-28). On infiltration with nematic liquid crystal, the small 200 nm diameter holes induced strong capillary alignment to facilitate strong birefringence responses when the filament was aligned into second-order (~1 micrometer period) Bragg arrays. Geometric arrangement of the nano-hole arrays provided the unique opportunity of designing customized all-fiber polarization filter inside of traditional single-mode fiber, with properties tunable by device length, azimuthal and chiral orientation of the filament array, and thermo-optic responses.
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Abdullah Rahnama, Tigran Dadalyan, Keivan Mahmoud Aghdami, Tigran Galstian, and Peter R. Herman "All-fiber, dynamically tunable, polarization filter based on liquid crystal filled nano-channels", Proc. SPIE PC12012, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XV, PC120120K (5 March 2022); https://doi.org/10.1117/12.2609196
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KEYWORDS
Polarization
Wave plates
Liquid crystals
Capillaries
Telecommunications
Thermal effects
Thermal optics
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