Fast interrogation of fiber Bragg grating sensors using electro-optic dual optical frequency combs

O. E. Bonilla-Manrique; J. A Garcia-Souto; P. Martin-Mateos; B. Jerez-Gonzalez; P. Acedo

doi:10.1117/12.2195288

28 September 2015 Fast interrogation of fiber Bragg grating sensors using electro-optic dual optical frequency combs

O. E. Bonilla-Manrique, J. A Garcia-Souto, P. Martin-Mateos, B. Jerez-Gonzalez, P. Acedo

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963422 (2015) https://doi.org/10.1117/12.2195288
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this document, a FBG interrogation system based on a multimode optical source and a direct read-out is proposed for measuring fast phenomena such as vibrations and ultrasounds. The system is based on an electro-optic dual optical frequency-comb. This architecture allows the configuration of the multimode optical source parameters such as the number of modes that are within the reflected spectrum (FWHM) of the FBG. Results are presented for the dual-comb operating under optimized control when mapping these optical modes onto detectable tones of multiples of 100 kHz around a centre radiofrequency tone (40 MHz). Dynamic strain is induced onto the fiber through an actuator, which generates changes in the reflected wavelength of the FBG and in turn the modes within the reflected spectrum. The electrical signals are analyzed using fast Fourier transform algorithms allowing identification of the vibrations.

Citation Download Citation

O. E. Bonilla-Manrique, J. A Garcia-Souto, P. Martin-Mateos, B. Jerez-Gonzalez, and P. Acedo "Fast interrogation of fiber Bragg grating sensors using electro-optic dual optical frequency combs ", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963422 (28 September 2015); https://doi.org/10.1117/12.2195288

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available