A novel approach to fabricate high performance electrically tunable fiber device based on well-aligned liquid crystal- infiltrated hollow core fiber

Su, Hsien-Pin; Hwang, Shug-June

doi:10.1016/j.optlastec.2023.109416

Cited by 2 publications

(1 citation statement)

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“…In this context, Maune et al 44 have presented electrically tuned SOI based ring resonators by using the NLCs as a waveguide side and top cladding material. Moreover, Su and Hwang 45 have studied the effect of the applied voltage on the LC orientation. When the applied voltage is less than a threshold voltage (V th = 35 V), the director of the LC (RDP-98995; DIC Corp.) is barely disturbed and parallel to the fiber axis.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric dual-core liquid crystal channel-based tunable mode converter

Esmail,

Hameed,

Obayya

et al. 2024

Sci Rep

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In this work, a higher order-to-fundamental mode converter is reported and analyzed based on an asymmetric dual channel waveguide (ADC-WG) on silicon. In the reported structure, one of the two waveguides is infiltrated with nematic liquid crystal (NLC) material to add temperature tunability while the other one is a solid BK7 waveguide. The modal characteristics are obtained using the full vectorial finite difference method (FVFDM). In addition, the structural parameters and optical characteristics of the employed materials are investigated to achieve good wavelength selectivity with a short device length (LD). Thus, a compact mode converter that can work at different wavelengths including the telecommunication wavelength i.e., 1.55 μm with LD ~ 482.31 μm and a low crosstalk of − 19.86 dB is presented. To prove the thermal tunability of the suggested mode converter, its operation is tested through a temperature range between 20 and 35 °C and the results show that the mode conversion process is achieved at each temperature with different phase matching wavelengths (λPMW) but with quite similar coupling length (LC). The proposed device can therefore be effectively utilized in integrated photonic circuits.

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Section: Introductionmentioning

confidence: 99%