Title :
The OEO as an acoustic sensor
Author :
Okusaga, Olukayode ; Pritchett, Justin ; Sorenson, R. ; Weimin Zhou ; Berman, M. ; Cahill, James ; Carter, Gary M. ; Menyuk, Curtis R.
Author_Institution :
Sensors & Electron. Devices Div., U.S. Army Res. Lab., Adelphi, MD, USA
Abstract :
The optoelectronic oscillator (OEO) is a radio-frequency (RF) source that utilizes lengths of optical fiber in a ring resonator to create low-phase-noise signals. In this work, we demonstrate a novel fiber-optic acoustic sensor by measuring the modulation sidebands induced on the OEO´s RF signal by an acoustic tone impinging on the fiber spool in the OEO. The narrow linewidth and high oscillating frequency of the OEO results in a sensor with both high signal-to-noise ratios and high spectral resolution.
Keywords :
acoustic transducers; fibre optic sensors; optoelectronic devices; phase noise; fiber-optic acoustic sensor; high spectral resolution; low-phase-noise signals; modulation sidebands; narrow linewidth; optical fiber; optoelectronic oscillator; oscillating frequency; radiofrequency source; ring resonator; signal-to-noise ratios; Frequency modulation; Optical fiber sensors; Optical fibers; Optical interferometry; Radio frequency; Optoelectronic oscillators; acoustic sensing;
Conference_Titel :
European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013 Joint
Conference_Location :
Prague
DOI :
10.1109/EFTF-IFC.2013.6702238
