Počet záznamů: 1
Transport properties of optical fibres with high numerical apertures
- 1.
SYSNO ASEP 0535619 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Transport properties of optical fibres with high numerical apertures Tvůrce(i) Tyc, Tomáš (UPT-D) ORCID
Simpson, Stephen Hugh (UPT-D) RID, SAI
Čižmár, Tomáš (UPT-D) RID, ORCID, SAICelkový počet autorů 3 Číslo článku 112970Y Zdroj.dok. Complex Light and Optical Forces XIV 2020. Proceedings of SPIE, 11297. - Bellingham : SPIE, 2020 - ISSN 0277-786X - ISBN 978-151063357-5 Poč.str. 8 s. Forma vydání Tištěná - P Akce Complex Light and Optical Forces 2020 /14./ Datum konání 04.02.2020 - 05.02.2020 Místo konání San Francisco Země US - Spojené státy americké Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova optical fibre ; polarization ; spin-orbit coupling Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP EF15_003/0000476 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LO1212 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UPT-D - RVO:68081731 UT WOS 000552296600015 EID SCOPUS 85082708144 Anotace We theoretically examine the transport properties of non-ideal optical fibres with high numerical aperture. Using a simple spectral method, we derive the modes in perturbed or non-ideal fibres from the numerically evaluated modes of circularly symmetric fibres. We then consider the propagation through the fibre of Gaussian spots, projected onto the distal fibre end. The incident spots are of uniform, arbitrary polarization and positioned at any point on the fibre facet. We then evaluate the effect of propagation through the fibre in terms of various indices. In particular, we consider the motion of the centre of energy, the average polarization state and the average spin and orbital angular momentum. The study includes both step index and graded index optical fibres with symmetric and chiral deformations. We observe a fundamental difference between propagation in step index and graded index optical fibres: in the latter case, the centre of energy converges to the fibre axis as the light propagated along the fibre and in the former it moves erratically about the transverse plane. In addition, we find that circular polarization states are preserved for cylindrically symmetric fibres, of arbitrarily high numerical aperture. However, this property is destroyed by relatively weak deformations of the fibre.We theoretically examine the transport properties of non-ideal optical fibres with high numerical aperture. Using a simple spectral method, we derive the modes in perturbed or non-ideal fibres from the numerically evaluated modes of circularly symmetric fibres. We then consider the propagation through the fibre of Gaussian spots, projected onto the distal fibre end. The incident spots are of uniform, arbitrary polarization and positioned at any point on the fibre facet. We then evaluate the effect of propagation through the fibre in terms of various indices. In particular, we consider the motion of the centre of energy, the average polarization state and the average spin and orbital angular momentum. The study includes both step index and graded index optical fibres with symmetric and chiral deformations. We observe a fundamental difference between propagation in step index and graded index optical fibres: in the latter case, the centre of energy converges to the fibre axis as the light propagated along the fibre and in the former it moves erratically about the transverse plane. In addition, we find that circular polarization states are preserved for cylindrically symmetric fibres, of arbitrarily high numerical aperture. However, this property is destroyed by relatively weak deformations of the fibre. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2021
Počet záznamů: 1