Tapered fiber optic devices with liquid crystal cladding

Mariusz Florek; Karol A. Stasiewicz; Joanna Korec; Joanna E. Moś; Olga Strzeżysz; Katarzyna Garbat; Leszek R. Jaroszewicz

doi:10.1117/12.2522018

15 March 2019 Tapered fiber optic devices with liquid crystal cladding

Mariusz Florek, Karol A. Stasiewicz, Joanna Korec, Joanna E. Moś, Olga Strzeżysz, Katarzyna Garbat, Leszek R. Jaroszewicz

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Proceedings Volume 11045, Optical Fibers and Their Applications 2018; 110450E (2019) https://doi.org/10.1117/12.2522018
Event: 18th Conference on Optical Fibers and Their Applications, 2018, Naleczow, Poland

Abstract

The paper presents the results of manufacturing and characterization of a broad band in-line hybrid device using a nematic liquid crystal as an active cladding for biconical tapered optical fiber. Two different liquid crystal mixtures denoted as 1550* and E7 were used for electric and temperature control in a broad wavelength range. An optical fiber tapers with a waist of 10±0.5 μm and losses lower than 0.5 dB in a whole broad band spectrum range were applied. Such taper waist diameter makes the whole waist as core for light propagation, where the surrounding air becomes the cladding. Additionally, such diameter enables an effective control of molecules orientation. Performance of a tuned cladding was studied in an electric field in the range between 0 V and 160 V in the room temperature equal to 20 °C. Influence of induced liquid crystal molecules reorientation was measured at a broad wavelength range (500-1700 nm).

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Mariusz Florek, Karol A. Stasiewicz, Joanna Korec, Joanna E. Moś, Olga Strzeżysz, Katarzyna Garbat, and Leszek R. Jaroszewicz "Tapered fiber optic devices with liquid crystal cladding", Proc. SPIE 11045, Optical Fibers and Their Applications 2018, 110450E (15 March 2019); https://doi.org/10.1117/12.2522018

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KEYWORDS

Liquid crystals

Cladding

Optical fibers

Modulation

Refractive index

Chemical elements

Fiber optics

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