A Method for Detecting Nanometer Length Oscillations in Fiber-Optic Sensors Using a Tracking Tandem Low-Coherent Interferometer

A Method for Detecting Nanometer Length Oscillations in Fiber-Optic Sensors Using a Tracking Tandem Low-Coherent Interferometer

A method for detecting changes in the length of an optical cavity is proposed for fiber-optic sensors based on the Fabry–Perot interferometer scheme. The possibility of detecting oscillations of the resonator length at the subnanometer level in the frequency band 1.5–300 kHz is shown. The sensitivit...

Full description

Saved in:
Bibliographic Details
Published in:Instruments and experimental techniques (New York) Vol. 66; no. 6; pp. 957 - 960
Main Authors: Volkov, P. V., Goryunov, A. V., Luk’yanov, A. Yu, Semikov, D. A., Tertyshnik, A. D.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-12-2023
Springer Nature B.V
Subjects:
Electrical Engineering
Fiber optics
Frequencies
General Experimental Technique
Interferometers
Measurement Science and Instrumentation
Oscillations
Physical Chemistry
Physics
Physics and Astronomy
Sensors
Temperature effects
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method for detecting changes in the length of an optical cavity is proposed for fiber-optic sensors based on the Fabry–Perot interferometer scheme. The possibility of detecting oscillations of the resonator length at the subnanometer level in the frequency band 1.5–300 kHz is shown. The sensitivity was 0.3 nm in standard deviation. The proposed scheme makes it possible to reliably distinguish high-frequency oscillations against the background of slow drifts of the sensor length caused by temperature fluctuations or deformations.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441223040061