We numerically investigated a phase shifter based on a polymeric platform by using two different approaches. The device consists of a polymeric slot waveguide covered with an organic liquid crystal cladding, which is a promising configuration for the implementation of polymeric waveguide systems for computation, communication and sensing. Two different nematic liquid crystals have been considered, E7 and 5CB. At first, we have indirectly computed the phase shift through a combination of 2D Finite Element Method with index ellipsoid theory. Then, we have investigated the signal propagation by means of 3D Finite Difference Time Domain Method, which allowed to obtain also the intrinsic propagation loss of the structure and the materials. Although each approach introduces specific approximations and requires different resources, both give similar results and confirm the excellent quality of the device, namely low propagation losses and relevant phase shifting capability.

Analysis of a phase shifter based on a slot polymeric waveguide with liquid crystal cladding / Cornaggia, Flavio; Alam, Badrul; D'Alessandro, Antonio; Asquini, Rita. - (2021), pp. 107-108. ((Intervento presentato al convegno 21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 tenutosi a Torino [10.1109/NUSOD52207.2021.9541518].

Analysis of a phase shifter based on a slot polymeric waveguide with liquid crystal cladding

Alam, Badrul;d'Alessandro, Antonio;Asquini, Rita
2021

Abstract

We numerically investigated a phase shifter based on a polymeric platform by using two different approaches. The device consists of a polymeric slot waveguide covered with an organic liquid crystal cladding, which is a promising configuration for the implementation of polymeric waveguide systems for computation, communication and sensing. Two different nematic liquid crystals have been considered, E7 and 5CB. At first, we have indirectly computed the phase shift through a combination of 2D Finite Element Method with index ellipsoid theory. Then, we have investigated the signal propagation by means of 3D Finite Difference Time Domain Method, which allowed to obtain also the intrinsic propagation loss of the structure and the materials. Although each approach introduces specific approximations and requires different resources, both give similar results and confirm the excellent quality of the device, namely low propagation losses and relevant phase shifting capability.
21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021
optical integrated circuits; FDTD; FEM; liquid crystal; waveguide; phase shift
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Analysis of a phase shifter based on a slot polymeric waveguide with liquid crystal cladding / Cornaggia, Flavio; Alam, Badrul; D'Alessandro, Antonio; Asquini, Rita. - (2021), pp. 107-108. ((Intervento presentato al convegno 21st International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 tenutosi a Torino [10.1109/NUSOD52207.2021.9541518].
File allegati a questo prodotto
File Dimensione Formato  
Cornaggia_Analysis_2021.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 2.75 MB
Formato Adobe PDF
2.75 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1578740
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact