Number of the records: 1
Disorder effects in subwavelength grating metamaterial waveguides
- 1.
SYSNO ASEP 0484771 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Disorder effects in subwavelength grating metamaterial waveguides Author(s) 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)Number of authors 7 Source Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 25, č. 11 (2017), s. 12222-12236Number of pages 15 s. Publication form Print - P Language eng - English Country US - United States Keywords Subwavelength grating ; Integrated photonics ; Diffraction effects Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects GA16-00329S GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 UT WOS 000403940700017 EID SCOPUS 85019995568 DOI 10.1364/OE.25.012222 Annotation 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 Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2018
Number of the records: 1