Show simple item record

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

dc.contributor.authorVanhamel, J.
dc.contributor.authorDupont, S.
dc.contributor.authorKastelik, J.C.
dc.contributor.authorDekemper, E.
dc.date2023
dc.date.accessioned2025-04-18T09:31:24Z
dc.date.available2025-04-18T09:31:24Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/14016
dc.descriptionAcousto-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 five 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 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 five transducer setups were electrically characterized. These measurements allow the development of an RF 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 diffraction efficiency. © 2023 Jurgen Vanhamel et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.languageeng
dc.titleDesign of a Radio Frequency Compensation System, using the Electrical Characterisation of a Multi-Transducer Acousto-Optical Tunable Filter
dc.typeConference
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeDiffraction
dc.subject.freeEfficiency
dc.subject.freeImpedance matching (electric)
dc.subject.freeRadio waves
dc.subject.freeAcousto-optical tunable filter
dc.subject.freeCompensation
dc.subject.freeCompensation systems
dc.subject.freeFrequency compensation
dc.subject.freeOptical-
dc.subject.freePower
dc.subject.freeRadio-frequency-steering
dc.subject.freeRadiofrequencies
dc.subject.freeRadiofrequency signals
dc.subject.freeVoltage standing-wave ratio
dc.subject.freeTransducers
dc.source.titleProceedings of Forum Acusticum 2023, September 11-15 2023, Torino, Italy
dc.source.page6355-6360
Orfeo.peerreviewedNo
dc.identifier.doi10.61782/fa.2023.0379
dc.identifier.url


Files in this item

Thumbnail
Name:
Vanhamel(2023b).pdf
Size:
892.9Kb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record