Abstract
A 2-D photonic crystal (PhC) based octagonal-shaped optical channel drop filter (CDF) resonance structure is suggested and simulated. The structure comprises of four ports. Port ‘A’ acts as an input and ‘B’, ‘C’ and ‘D’ are taken out as output ports. The plane wave expansion (PWE) method is used to evaluate the Photonic bandgap (PBG) as well as the distributions of electric fields. When the applied optical signal lies in the PBG range and also equal to the resonance wavelength of the structure then it enabled the structure to behave as a filter; otherwise, it would be performed as a normal waveguide. In the proposed structure for the wavelengths 1200–1600 nm, it behaves as a normal waveguide and for 1650–1700 nm. Wavelengths behave like a drop filter. By using scatterer and coupling rods in the proposed structure, we obtained 98–99% of drop efficiency for the wavelengths 1650 and 1700 nm.
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Pandey, M.K., Sharma, R., Jangid, M. (2022). Design and Simulation of a Photonic Crystal-Based 2-D Octagonal-Shaped Optical Drop Filter. In: Tiwari, M., Maddila, R.K., Garg, A.K., Kumar, A., Yupapin, P. (eds) Optical and Wireless Technologies. Lecture Notes in Electrical Engineering, vol 771. Springer, Singapore. https://doi.org/10.1007/978-981-16-2818-4_49
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DOI: https://doi.org/10.1007/978-981-16-2818-4_49
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