발간년도 : [2023]
| 논문정보 |
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| 논문명(한글) |
[Vol.18, No.3] Microstructural Design and Computational Analysis of Enlarged Core Photonic Crystal Waveguides |
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| 논문투고자 |
Jeong I. Kim |
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| 논문내용 |
Current optical waveguides work as one of the widest bandwidth media for information data transmission links, and also crucially operate as light-signal processing components in lightwave communication systems. Photonic crystal waveguides (PCWs) from very new advanced technology have been considered in order to provide several unique features due to different waveguidance mechanism of the PCWs, including endlessly single-mode remarkable operation bandwidth and the potential to localize part of the guided mode in air regions, because artificial photonic crystals can be formed by modulating the relative refractive permittivity of a material with an appropriately-designed repeating pattern in space, thereby enabling a photonic band-gap (PBG) effect. In this research, newly proposed enlarged core PCWs have been first designed and investigated without and with a central air hole in order to achieve large effective mode areas by utilizing the PBG effect and therefore mitigate signal distortion and degradation sequels. Based on accurate and reliable computational analysis techniques, the enlarged core PCW with the central air-hole radius of 1.5 μm and seven layers of air holes from the 3rd to the 9th exhibits desirable performance results with the large effective area of 73.01 μm2 for the fundamental
mode at the operating wavelength of 1.55 μm, providing additive advantages in terms of simple fabrication materials and coupling or convergence aspect with the conventional optical waveguides. |
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