Finite Element Analysis of Piezoelectric Polymer-Coated D-Fiber Intended for Electric Field Sensing

We report, for the first time, the advantage of using a polymer-coated D-fiber over conventional circular fiber as the sensing element in an all-fiber electric field sensor. Finite element analysis has been used to studythe strains in a D-fiber subjected to an external electric field. The optical D-...

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Bibliographic Details
Published in:Fiber and integrated optics 2000-01, Vol.19 (1), p.79-85
Main Author: A. Bhatti, H. S. Al-Raweshidy, G. Murtaza
Format: Article
Language:English
Subjects:
Acousto-optic Device
All-fiber Device
d-fiber
Electric Field Sensing
Finite Element Analysis
Optical Fiber Communications
Phase Modulation
Piezoelectricity
Piezoelectric Materials
Polymer Coatings
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
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Summary:We report, for the first time, the advantage of using a polymer-coated D-fiber over conventional circular fiber as the sensing element in an all-fiber electric field sensor. Finite element analysis has been used to studythe strains in a D-fiber subjected to an external electric field. The optical D-fiber carrying a transversely poled piezoelectric poly(vinylidene fluoride) polymer coating was modeled by using three-dimensional stress analysis. The response of the D-fiber electric field sensor was determined over a wide frequency range from 100 Hz to 50 MHz. The modeling predicts that the resulting strains will cause a phase shift of 0.06 rad V m in the low-frequency (axially unconstrained) region and 0.002 rad V m in the high-frequency (axially constrained)region. An increase in the phase modulation sensitivity by a factor of 3 compared to conventional circular fiber has been achieved by utilizing the unique properties of the D-fiber structure.
ISSN:0146-8030
1096-4681
DOI:10.1080/014680300244530