Smart interpolator for a fiber-optic pressure sensor

Changsen Sun; Junxiu Lin

doi:10.1364/AO.36.005185

Applied Optics
Vol. 36,
Issue 21,
pp. 5185-5187
(1997)
•https://doi.org/10.1364/AO.36.005185

Smart interpolator for a fiber-optic pressure sensor

Changsen Sun and Junxiu Lin

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Changsen Sun and Junxiu Lin, "Smart interpolator for a fiber-optic pressure sensor," Appl. Opt. 36, 5185-5187 (1997)

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Abstract

A smart interpolator is proposed to improve the long-term stability of a fiber-optic pressure sensor. This method relies on decomposing the compensation model into signal and reference channel parameters. Analysis shows that this interpolator can be used for self-calibration and cancellation of the long-term drift. Experiments prove its effectiveness.

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Equations (15)

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P (MPa)	S	I ₁₁	I ₁₂	I ₂₁	I ₂₂	X	Y
0.00	0.0360	1.1057	1.0642	0.9170	0.9484	0.0191	-0.0168
0.01	0.0937	1.1676	1.0007	0.9163	0.9476	0.0770	-0.0168
0.02	0.1519	1.2307	0.9369	0.9162	0.9474	0.1355	-0.0167
0.03	0.2099	1.2934	0.8734	0.9161	0.9473	0.1938	-0.0167
0.04	0.2670	1.3554	0.8109	0.9159	0.9472	0.2514	-0.0168
0.05	0.3230	1.4162	0.7493	0.9158	0.9470	0.3080	-0.0167
0.06	0.3778	1.4756	0.6891	0.9157	0.9469	0.3633	-0.0168
0.07	0.4310	1.5339	0.6306	0.9155	0.9467	0.4173	-0.0168
0.08	0.4825	1.5899	0.5737	0.9155	0.9467	0.4697	-0.0167

P (MPa)	S′	X′	Y′	X̂	S - S′	X X̂′
0.00	0.0348	0.0146	-0.0202	0.0157	0.0012	0.0011
0.01	0.0925	0.0725	-0.0201	0.0737	0.0012	0.0012
0.02	0.1511	0.1313	-0.0202	0.1321	0.0008	0.0008
0.03	0.2090	0.1897	-0.0201	0.1903	0.0009	0.0006
0.04	0.2663	0.2474	-0.0201	0.2481	0.0007	0.0007
0.05	0.3223	0.3041	-0.0202	0.3046	0.0007	0.0005
0.06	0.3772	0.3598	-0.0202	0.3599	0.0006	0.0001
0.07	0.4305	0.4140	-0.0201	0.4140	0.0005	0.0000
0.08	0.4821	0.4666	-0.0201	0.4664	0.0004	-0.0002

P (MPa)	S	I ₁₁	I ₁₂	I ₂₁	I ₂₂	X	Y
0.00	0.0360	1.1057	1.0642	0.9170	0.9484	0.0191	-0.0168
0.01	0.0937	1.1676	1.0007	0.9163	0.9476	0.0770	-0.0168
0.02	0.1519	1.2307	0.9369	0.9162	0.9474	0.1355	-0.0167
0.03	0.2099	1.2934	0.8734	0.9161	0.9473	0.1938	-0.0167
0.04	0.2670	1.3554	0.8109	0.9159	0.9472	0.2514	-0.0168
0.05	0.3230	1.4162	0.7493	0.9158	0.9470	0.3080	-0.0167
0.06	0.3778	1.4756	0.6891	0.9157	0.9469	0.3633	-0.0168
0.07	0.4310	1.5339	0.6306	0.9155	0.9467	0.4173	-0.0168
0.08	0.4825	1.5899	0.5737	0.9155	0.9467	0.4697	-0.0167

P (MPa)	S′	X′	Y′	X̂	S - S′	X X̂′
0.00	0.0348	0.0146	-0.0202	0.0157	0.0012	0.0011
0.01	0.0925	0.0725	-0.0201	0.0737	0.0012	0.0012
0.02	0.1511	0.1313	-0.0202	0.1321	0.0008	0.0008
0.03	0.2090	0.1897	-0.0201	0.1903	0.0009	0.0006
0.04	0.2663	0.2474	-0.0201	0.2481	0.0007	0.0007
0.05	0.3223	0.3041	-0.0202	0.3046	0.0007	0.0005
0.06	0.3772	0.3598	-0.0202	0.3599	0.0006	0.0001
0.07	0.4305	0.4140	-0.0201	0.4140	0.0005	0.0000
0.08	0.4821	0.4666	-0.0201	0.4664	0.0004	-0.0002

Abstract

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Equations (15)

Applied Optics