The University of Southampton
University of Southampton Institutional Repository

Single is better than double: analysis of thermal poling configurations using 2D numerical modeling

Single is better than double: analysis of thermal poling configurations using 2D numerical modeling
Single is better than double: analysis of thermal poling configurations using 2D numerical modeling
Thermal poling, a technique to create permanently effective second-order susceptibility in silica optical fibers, has a wide range of applications, such as frequency conversion, electro-optic modulation, switching and polarization-entangled photon pairs generation. After many works where a conventional configuration anode-cathode was used, in 2009 a new electrode configuration (double-anode) was adopted, which allows for a more temperature-stable depletion region formation and a higher value of effective χ2. In this work we demonstrate, via numerical simulations realized in COMSOL® Multiphysics, that in a double-anode configuration the effective value of χ2 strongly depends on the relative position of the core with respect to the electrodes, requiring an accurate and precisely tailored geometry of the fiber, while in a single-anode configuration this value, for standard poling conditions is almost independent of the position of the core, offering the possibility of relaxing the manufacturing constraint of the fiber fabrication. We also demonstrate that, in the same experimental conditions, the maximum value of effective χ2 induced by thermal poling in double-anode configuration is smaller than the one obtained in single-anode configuration for any position of the core in the range between the anodic surface and the geometric center of the fiber. Finally, we report the experimental observation of depletion region formation in a twin-hole fused silica fiber poled in single-anode configuration. Using a QPM SHG experimental set-up, we demonstrate that the value of χ2 obtained in the single anode configuration is at least as large as for the double anode one.
SPIE
De Lucia, Francesco
4a43cb71-dbd5-422e-bea6-ed48cde423f3
Sazio, Pier-John
0d6200b5-9947-469a-8e97-9147da8a7158
De Lucia, Francesco
4a43cb71-dbd5-422e-bea6-ed48cde423f3
Sazio, Pier-John
0d6200b5-9947-469a-8e97-9147da8a7158

De Lucia, Francesco and Sazio, Pier-John (2018) Single is better than double: analysis of thermal poling configurations using 2D numerical modeling. In Proceedings of SPIE Photonics West 2018. SPIE.. (doi:10.1117/12.2288392).

Record type: Conference or Workshop Item (Paper)

Abstract

Thermal poling, a technique to create permanently effective second-order susceptibility in silica optical fibers, has a wide range of applications, such as frequency conversion, electro-optic modulation, switching and polarization-entangled photon pairs generation. After many works where a conventional configuration anode-cathode was used, in 2009 a new electrode configuration (double-anode) was adopted, which allows for a more temperature-stable depletion region formation and a higher value of effective χ2. In this work we demonstrate, via numerical simulations realized in COMSOL® Multiphysics, that in a double-anode configuration the effective value of χ2 strongly depends on the relative position of the core with respect to the electrodes, requiring an accurate and precisely tailored geometry of the fiber, while in a single-anode configuration this value, for standard poling conditions is almost independent of the position of the core, offering the possibility of relaxing the manufacturing constraint of the fiber fabrication. We also demonstrate that, in the same experimental conditions, the maximum value of effective χ2 induced by thermal poling in double-anode configuration is smaller than the one obtained in single-anode configuration for any position of the core in the range between the anodic surface and the geometric center of the fiber. Finally, we report the experimental observation of depletion region formation in a twin-hole fused silica fiber poled in single-anode configuration. Using a QPM SHG experimental set-up, we demonstrate that the value of χ2 obtained in the single anode configuration is at least as large as for the double anode one.

Text
De Lucia_corrected - Accepted Manuscript
Download (454kB)
Text
Abstract for Photonics West_submitted
Download (17kB)

More information

Accepted/In Press date: 30 December 2017
e-pub ahead of print date: 23 February 2018

Identifiers

Local EPrints ID: 414943
URI: http://eprints.soton.ac.uk/id/eprint/414943
PURE UUID: e31be564-4ba3-4c0f-96e8-4aff0b34d7e4
ORCID for Pier-John Sazio: ORCID iD orcid.org/0000-0002-6506-9266

Catalogue record

Date deposited: 17 Oct 2017 16:30
Last modified: 16 Mar 2024 05:49

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×