Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/783
Title: | Broadband Self-Collimation in C2 Symmetric Photonic Crystals | Authors: | Gümüş, Melike Giden, İbrahim Halil Kurt, Hamza |
Keywords: | Crystal structure Group velocity dispersion Numerical analysis Super-collimation Coupling technique |
Publisher: | OSA - The Optical Society | Source: | Gumus, M., Giden, I. H., & Kurt, H. (2018). Broadband self-collimation in C2 symmetric photonic crystals. Optics letters, 43(11), 2555-2558. | Abstract: | In this study, we report a low-symmetric photonic crystal (PhC) structure that exhibits high coupling efficiency in a broadband frequency range with a tilted self-collimating capability. First, the analytical approach is implemented as a starting point, and the ideal configuration is chosen for the self-collimation effect, which is analytically supported by group velocity dispersion and third-order-dispersion calculations. Then, numerical analyses in both time and frequency domains are performed to the ideal PhC design, which possesses a strong self-collimating characteristic, even at huge incident angles within the operating frequencies. Later, experimental measurements are conducted in microwaves, and the existing self-collimation property is still preserved at longer wavelengths in the millimeter scale. The microwave experiment as well as numerical analyses indicate that the designed PhC self-collimator allows overcoming possible misalignment problems at the PhC–source interface and enables a strong broadband beam channeling with a high transmission. | URI: | https://www.osapublishing.org/ol/abstract.cfm?uri=ol-43-11-2555 https://hdl.handle.net/20.500.11851/783 |
Appears in Collections: | Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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