Numerical modelling of an error of manufacturing of ion-exchange waveguide for the tasks of quantum computations

This paper describes modeling of single-mode waveguide and 3dB directional coupler for integrated optical quantum circuits manufactured by ion-exchange process. We present results of diffusion ion exchange simulation for Na+ ↔ K+ in the R2O-Sn2O-SiO2 glass and optical elements modeling performed by...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2019-12, Vol.1410 (1), p.12136
Main Authors: Gerasimenko, V S, Gerasimenko, N D, Kiselev, F D
Format: Article
Language:English
Subjects:
Beams (radiation)
Directional couplers
Ion exchange
Optical components
Physics
Propagation
Refractivity
Silicon dioxide
Waveguides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes modeling of single-mode waveguide and 3dB directional coupler for integrated optical quantum circuits manufactured by ion-exchange process. We present results of diffusion ion exchange simulation for Na+ ↔ K+ in the R2O-Sn2O-SiO2 glass and optical elements modeling performed by the beam propagation method. There was demonstrated that the refractive index profile in the overlapping area of directional coupler can be calculated by summing two separate profiles, and error would not exceed 3%. We were able to minimize light propagation looses in the device with about 20 mm length. It was done by reducing interaction length to zero and adjusting width of the bend. After that fabrication tolerance of the device was looked. The overall transmittance of the proposed directional coupler was evaluated as 0.96
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1410/1/012136