A Photonic-Crystal Selective Filter
A highly selective filter is designed, working at 1.55 μm and having a 3-dB bandwidth narrower than 0.4 nm, as is required in Dense Wavelength Division Multiplexed systems. Different solutions are proposed, involving photonic crystals made rectangular- or circular-section dielectric rods, or else o...
| Published in: | Journal of Telecommunications and Information Technology |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
National Institute of Telecommunications
2017-09-01
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| Subjects: | |
| Online Access: | https://jtit.pl/jtit/article/view/681 |
| Summary: | A highly selective filter is designed, working at 1.55 μm and having a 3-dB bandwidth narrower than 0.4 nm, as is required in Dense Wavelength Division Multiplexed systems. Different solutions are proposed, involving photonic crystals made rectangular- or circular-section dielectric rods, or else of holes drilled in a dielectric bulk. The polarization and frequency selective properties are achieved by introducing a defect in the periodic structure. The device is studied by using in-house codes implementing the full-wave Fourier Modal Method. Practical guidelines about advantages and limits of the investigated solutions are given.
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| ISSN: | 1509-4553 1899-8852 |