Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorWan, KT-
dc.identifier.citationHKIE Transactions Hong Kong Institution of Engineers, 22(4): 247-251, (2015)en_US
dc.description.abstractIn this paper, a low-cost 3 × 3 coupler Mach–Zehnder interferometric optical fibre vibration sensor is proposed. Unlike the traditional Mach–Zehnder interferometer with a strain free reference arm, two parallel optical fibres with different strain transfer sensitivities are adopted. With the proper demodulation algorithm, the time rate of change in strain can be computed from the light signal of the outputs of a 3 × 3 coupler. The proposed optical fibre vibration sensor is verified by experiment. The vibrating frequency spectrum of a two-layer metal frame is measured by both the proposed optical fibre vibration sensor and micro-electro-mechanical system (MEMS)-based accelerometers. It was found that the proposed vibration sensor is more sensitive compared to the MEMS-based accelerometer, unless it is located near a zero-strain region. Several proposed sensors can easily be multiplexed to minimise the overall cost.en_US
dc.publisherTaylor & Francisen_US
dc.subjectOptical fibreen_US
dc.subjectMach-Zehnder interferometeren_US
dc.subjectVibration sensoren_US
dc.titleDevelopment of a low cost 3x3 coupler Mach-Zehnder interferometric optical fibre vibration sensoren_US
dc.relation.isPartOfHKIE Transactions Hong Kong Institution of Engineers-
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

Files in This Item:
File Description SizeFormat 
Fulltext.pdf234.6 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.