Publication: Fast Interrogation of Fiber Bragg Gratings with Electro-Optical Dual Optical Frequency Combs
Loading...
Identifiers
Publication date
2016-11-26
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Impact
Export
Abstract
Optical frequency combs (OFC) generated by electro-optic modulation of continuous-wave lasers provide broadband coherent sources with high power per line and independent control of line spacing and the number of lines. In addition to their application in spectroscopy, they offer flexible and optimized sources for the interrogation of other sensors based on wavelength change or wavelength filtering, such as fiber Bragg grating (FBG) sensors. In this paper, a dual-OFC FBG interrogation system based on a single laser and two optical-phase modulators is presented. This architecture allows for the configuration of multimode optical source parameters such as the number of modes and their position within the reflected spectrum of the FBG. A direct read-out is obtained by mapping the optical spectrum onto the radio-frequency spectrum output of the dual-comb. This interrogation scheme is proposed for measuring fast phenomena such as vibrations and ultrasounds.
Description
Keywords
Ultrasounds, Sensors, Spectroscopy, Fiber bragg gratings, Dual optical frequency comb, Sensor interrogation, Dynamic measurements
Bibliographic citation
Posada-Román, J. E., García-Souto, J. A., Poiana, D. A., & Acedo, P. (2016). Fast interrogation of fiber bragg gratings with Electro-Optical dual optical frequency combs. Sensors, 16(12), 2007.