Laser-frequency locking techniques for high-sensitivity strain measurements by high-birefringence fiber Bragg gratings and resonators
Authors: Salza M., Gagliardi G., Di Maio A., Ferraro P., De Natale P., Chehura E., Tatam R.
Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, Via Campi Flegrei 34, 80078 Napoli, Italy;
Centre for Photonics and Optical Engineering, School of Engineering, Cranfield University, Bedford MK43 OAL, UK
Abstract: A new approach to simultaneously interrogate orthogonal axes of single Fiber-Bragg-Gratings (FBGs) and FBG-Fabry Perot resonator sensors fabricated in linearly highly birefiringent (HiBi) fibre is presented. Novel interrogation techniques of single Fiber-Bragg-Gratings (FBGs) and FBG-resonator sensors are presented. For a single FBG, we combined a laser-modulation technique to an electronic feedback loop that keeps the source always frequency locked to one peak of the sensor
Journal/Review: PROCEEDINGS OF SPIE
Volume: 6619 Pages from: 661915-1 to: 661915-4