Titre :

Design of a Radio Frequency Compensation System, using the Electrical Characterisation of a Multi-Transducer Acousto-Optical Tunable Filter

Auteur(s) :

Vanhamel, J. [Auteur]
Department of Electrical Engineering [KU Leuven] [KU-ESAT]
Delft University of Technology [TU Delft]
Dupont, Samuel [Auteur]
Université Polytechnique Hauts-de-France [UPHF]
Optoélectronique - IEMN [OPTO - IEMN]
INSA Institut National des Sciences Appliquées Hauts-de-France [INSA Hauts-De-France]
Kastelik, Jean-Claude [Auteur]
Université Polytechnique Hauts-de-France [UPHF]
Optoélectronique - IEMN [OPTO - IEMN]
INSA Institut National des Sciences Appliquées Hauts-de-France [INSA Hauts-De-France]
Dekemper, E. [Auteur]
Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique [BIRA-IASB]

Titre de la manifestation scientifique :

10th Convention of the European Acoustics Association Forum Acusticum 2023

Ville :

Turin

Pays :

Italie

Date de début de la manifestation scientifique :

2023-09-11

Titre de la revue :

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

Éditeur :

European Acoustics Association

Date de publication :

2023-09-15

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Electronique
Sciences de l'ingénieur [physics]/Acoustique [physics.class-ph]
Sciences de l'ingénieur [physics]/Optique / photonique

Résumé en anglais : [en]

Acousto-Optical Tunable Filters (AOTFs) make use of the interaction between sound and light. To generate an ultrasound diffraction grating, a Radio-Frequency (RF) signal is applied to a piezoelectric transducer. The optical ...
Lire la suite >Acousto-Optical Tunable Filters (AOTFs) make use of the interaction between sound and light. To generate an ultrasound diffraction grating, a Radio-Frequency (RF) signal is applied to a piezoelectric transducer. The optical pass band can be controlled by adapting the properties of this transducer and the RF-signal. To achieve more precise control of the optical spectral bandwidth, we propose to use a multi-electrode array, consisting of three consecutive transducers. The Voltage Standing Wave Ratio (VSWR) is then used to evaluate the efficiency of the coupling between the RF-signal applied to the transducer and the acousto-optical crystal. A higher VSWR indicates that more power is being reflected back and that less is being absorbed by the transducer, which in turn results in a decrease in optical performance. The aim of this paper is to develop an RF driving system capable of compensating for the VSWR behavior, linked to the individual impedance matching network of each transducer. For this, the three transducers were electrically characterized. These measurements allow the development of a power compensation system, leading to an increase of applied power at the level of each transducer. Hence, the absorbed power at transducer level increases, resulting in improved optical efficiency.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL