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2024-07-08
Gradient Indexed Porous Core Photonic Crystal Fiber for Sub-Wavelength Confinement in Terahertz Regime
By
Progress In Electromagnetics Research M, Vol. 127, 141-149, 2024
Abstract
A gradient-indexed core photonic crystal fiber (PCF) is proposed to realize sub-wavelength field confinement in the terahertz (THz) regime. It is verified that the gradient index (GRIN) profile PCF confirms superior field localization compared to the standard PCF. The in-plane quality factor of the GRIN PCF is evaluated as 2.2849 × 109 which is 10 times greater than the conventional case. Moreover, the power fraction is found to be 84.04% and 99.69% along with the confinement loss of 0.31 dB/cm and 0.341 × 10-7 dB/cm for the standard and GRIN type PCF at 0.2 THz. It is significant that the designed PCF also produces radial and azimuthal polarizations with enhanced field propagation due to the implicated triangular GRIN profile. The proposed GRIN PCF is useful for sub-THz communication, sensing and imaging applications.
Citation
Kandaswamy Renuka Rani, Natesan Yogesh, and Krishnan Chitra, "Gradient Indexed Porous Core Photonic Crystal Fiber for Sub-Wavelength Confinement in Terahertz Regime," Progress In Electromagnetics Research M, Vol. 127, 141-149, 2024.
doi:10.2528/PIERM24041306
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