Abstract
In this research study, we propose a slow-light-based photonic crystal waveguide consisting of a combination of circular and elliptic airholes with a background material of lithium niobate LiNbO3 (refractive index n = 2.211). By modifying the radii of the closest row to the waveguide in each side, we demonstrate a high value of normalized delay-bandwidth product, equal to 0.60. Using finite-difference time-domain method (FDTD), a significant increase of second harmonic generation efficiency of about 0.14 at a moderate power is observed when analyzing the nonlinear performance of the designed slow-light structure.
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Gharsallah, Z., Sana, M., Najjar, M., Janyani, V. (2018). Slow-Light Enhanced Second Harmonic Generation in Lithium Niobate Photonic Crystal Waveguides. In: Janyani, V., Tiwari, M., Singh, G., Minzioni, P. (eds) Optical and Wireless Technologies. Lecture Notes in Electrical Engineering, vol 472. Springer, Singapore. https://doi.org/10.1007/978-981-10-7395-3_33
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DOI: https://doi.org/10.1007/978-981-10-7395-3_33
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