Electric field detection with a piezoelectric polymer-jacketed single-mode optical fiber

Pat D. DeSouza; Marc D. Mermelstein

doi:10.1364/AO.21.004214

Applied Optics
Vol. 21,
Issue 23,
pp. 4214-4218
(1982)
•https://doi.org/10.1364/AO.21.004214

Electric field detection with a piezoelectric polymer-jacketed single-mode optical fiber

Pat D. DeSouza and Marc D. Mermelstein

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Pat D. DeSouza and Marc D. Mermelstein, "Electric field detection with a piezoelectric polymer-jacketed single-mode optical fiber," Appl. Opt. 21, 4214-4218 (1982)

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Abstract

The detection of electric fields with a piezoelectric polymer-jacketed single-mode optical fiber is proposed. The polymer-jacketed fiber is incorporated as the sensing arm of a Mach-Zehnder fiber-optic interferometer. Calculations are presented for the fractional phase change/unit electric field strength of monochromatic light propagating in a poly(vinylidene fluoride)-jacketed fiber as a function of jacket radius. A minimum detectable field strength of 6.0 μV/m is estimated for a 1-km length of jacketed fiber.

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Equations (18)

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Material	Parameter	Value	Reference
Silica glass	Young’s modulus E′	7.3 × 10¹¹ dyn/cm²	14
	Poisson’s ratio σ′	0.17	14
	Refractive index n at λ = 0.6 μm	1.46	14
	Dielectric constant κ′	3.78	14
	Fiber radius r₁	62.5 and 50 μm
	Pockels coefficients
	P₁₁	0.1254	15
	P₄₄	−0.0718	15
Poly(vinylidene fluoride) PVDF	Young’s modulus E	2.5 × 10¹⁰ dyn/cm²	16
	Poisson’s ratio	0.39	16
	Hydrostatic piezoelectric coefficient d_h	13 × 10⁻¹² m/V	8
	Piezoelectric coefficient d₃₁	6 × 10⁻¹² m/V	17
	Dielectric constant κ	13	18

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Applied Optics