Confinement loss of inhibited coupling fibers with a cladding composed of a lattice of tubes of various shapes is theoretically and numerically investigated. Both solid core and hollow core are taken into account. It is shown that in case of polygonal shaped tubes, confinement loss is affected by extra loss due to Fano resonances between core modes and cladding modes with high spatial dependence. This explains why hollow core Kagome fibers exhibit much higher confinement loss with respect to tube lattice fibers and why hypocycloid core cladding interfaces significantly reduce fiber loss. Moreover it is shown that tube deformations, due for example to fabrication process, affect fiber performances. A relationship between the number of polygon sides and the spectral position of the extra loss is found. This suggests general guide lines for the design and fabrication of fibers free of Fano resonance in the spectral range of interest.

Extra loss due to Fano resonances in inhibited coupling fibers based on a lattice of tubes / Vincetti, Luca; Setti, Valerio. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 20:(2012), pp. 14350-14361. [10.1364/OE.20.014350]

Extra loss due to Fano resonances in inhibited coupling fibers based on a lattice of tubes

VINCETTI, Luca;SETTI, VALERIO
2012

Abstract

Confinement loss of inhibited coupling fibers with a cladding composed of a lattice of tubes of various shapes is theoretically and numerically investigated. Both solid core and hollow core are taken into account. It is shown that in case of polygonal shaped tubes, confinement loss is affected by extra loss due to Fano resonances between core modes and cladding modes with high spatial dependence. This explains why hollow core Kagome fibers exhibit much higher confinement loss with respect to tube lattice fibers and why hypocycloid core cladding interfaces significantly reduce fiber loss. Moreover it is shown that tube deformations, due for example to fabrication process, affect fiber performances. A relationship between the number of polygon sides and the spectral position of the extra loss is found. This suggests general guide lines for the design and fabrication of fibers free of Fano resonance in the spectral range of interest.
20
14350
14361
Extra loss due to Fano resonances in inhibited coupling fibers based on a lattice of tubes / Vincetti, Luca; Setti, Valerio. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 20:(2012), pp. 14350-14361. [10.1364/OE.20.014350]
Vincetti, Luca; Setti, Valerio
File in questo prodotto:
File Dimensione Formato  
oe-20-13-14350.pdf

accesso aperto

Tipologia: Versione dell'editore (versione pubblicata)
Dimensione 1.35 MB
Formato Adobe PDF
1.35 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/737474
Citazioni
  • ???jsp.display-item.citation.pmc??? 4
  • Scopus 49
  • ???jsp.display-item.citation.isi??? 39
social impact