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Optical response of an all-fibre acoustooptic phase modulator using aluminium nitride coating

Bhatti, Ajaz, Al-Raweshidy, Hamed S., Murtaza, G. (2000) Optical response of an all-fibre acoustooptic phase modulator using aluminium nitride coating. Optics Communications, 176 (4-6). pp. 355-363. ISSN 0030-4018. (doi:10.1016/S0030-4018(00)00496-X) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:16127)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1016/S0030-4018(00)00496-X

Abstract

For the first time we present results on an all-fibre acoustooptic phase modulator using aluminium nitride (AlN) thin film as the piezoelectric coating. Two-dimensional axisymmetric finite element analysis was employed to determine the response of the modulator over a wide frequency range from 10 kHz to 700 MHz. Phase shifts of 0.823 rad/V/m in the low frequency region and 0.374 rad/V/m in the high frequency region were observed. At frequencies higher than 28 MHz the response is dominated by radial resonances of the fibre-coating composite. A theoretical investigation of the acoustic impedance showed that there is good impedance matching between the AlN piezoelectric coating and the glass fibre resulting in a high acoustic energy transfer of similar to 82% at the coating-fibre interface. (C) 2000 Elsevier Science B.V. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/S0030-4018(00)00496-X
Uncontrolled keywords: finite element analysis; AlN coating; piezoelectricity; phase modulation; acoustooptic devices; thin films
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK8300 Optoelectronic devices. Photoelectronic devices
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: P. Ogbuji
Date Deposited: 15 Apr 2009 14:44 UTC
Last Modified: 16 Nov 2021 09:54 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/16127 (The current URI for this page, for reference purposes)

University of Kent Author Information

Al-Raweshidy, Hamed S..

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