Abstract
Silicon-on-Insulator (SOI)-based structure has a lot of advantages and overcomes the limitation of conventional copper- and fiber-based technologies. SOI waveguide-based directional coupler is broadly used in high-speed networks and hybrid interconnects due to its high index difference. The SOI directional coupler (DC) is designed with odd and even modes of TE and TM for symmetric and asymmetric structures. For symmetric structure, TM mode requires lower coupler length for the coupling power of cross-port and parallel port power, and for asymmetric structure, TE mode requires larger coupler length for the coupling power of cross-port and parallel port power. Coupler was designed using an effective index method with optimized structural parameter such as coupler length, polarization dependence, and wavelength. Finally, the proposed coupler and its performance were investigated in terms of coupling efficiency, cross-talk, and coupling length.
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Radhakrishnan, S., Kumawat, A., Thavasi Raja, G., Sriram Kumar, D. (2020). Numerical Investigation of T-Shape Waveguide-Based Directional Coupler. In: Janyani, V., Singh, G., Tiwari, M., Ismail, T. (eds) Optical and Wireless Technologies. Lecture Notes in Electrical Engineering, vol 648. Springer, Singapore. https://doi.org/10.1007/978-981-15-2926-9_45
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DOI: https://doi.org/10.1007/978-981-15-2926-9_45
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