Počet záznamů: 1
Disorder effects in subwavelength grating metamaterial waveguides
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SYSNO ASEP 0484771 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Disorder effects in subwavelength grating metamaterial waveguides Tvůrce(i) Ortega-Moñux, A. (ES)
Čtyroký, Jiří (URE-Y) RID
Cheben, P. (CA)
Schmid, J. H. (CA)
Wang, S. (CN)
Molina-Fernández, I. (ES)
Halíř, R. (CZ)Celkový počet autorů 7 Zdroj.dok. Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 25, č. 11 (2017), s. 12222-12236Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Subwavelength grating ; Integrated photonics ; Diffraction effects Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP GA16-00329S GA ČR - Grantová agentura ČR Institucionální podpora URE-Y - RVO:67985882 UT WOS 000403940700017 EID SCOPUS 85019995568 DOI 10.1364/OE.25.012222 Anotace Subwavelength grating (SWG) waveguides are integrated photonic structures with a pitch substantially smaller than wavelength for which they are designed, so that diffraction effects are suppressed. SWG operates as an artificial metamaterial with an equivalent refractive index which depends on the geometry of the structure and the polarization of the propagating wave. SWG waveguides have been advantageously used in silicon photonics, resulting in significant performance improvements for many practical devices, including highly efficient fiber-chip couplers, waveguide crossings, broadband multimode interference (MMI) couplers, evanescent field sensors and polarization beam splitters, to name a few. Here we present a theoretical and experimental study of the influence of disorder effects in SWG waveguides. We demonstrate via electromagnetic simulations and experimental measurements that even a comparatively small jitter (similar to 5 nm) in the position and size of the SWG segments may cause a dramatic reduction in the transmittance for wide (multimode) SWG waveguides, while for narrow (single mode) waveguides this effect is negligible. Our study shows that the impact of the jitter on SWG waveguide performance is directly related to the modal confinement Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2018
Počet záznamů: 1