Title :
Self-Referencing Fiber-Optic Intensity Sensors Using Ring Resonators and Fiber Bragg Gratings
Author :
Vázquez, C. ; Montalvo, J. ; Montero, D.S. ; Pena, J.M.S.
Author_Institution :
Carlos III Univ. of Madrid, Leganes
Abstract :
An improved ring resonator self-referencing technique in a new reflection configuration for remote fiber-optic intensity sensors is demonstrated using fiber Bragg gratings. Sensor sensitivity doubles and a single fiber lead is used. The sensor is interrogated at two subcarrier frequencies having a high rejection of interference from laser source intensity fluctuations and loss in the fiber lead. We experimentally demonstrate the efficiency of the new reflection configuration, the usefulness of the theoretical model proposed, and discuss design parameters for optimum insertion losses
Keywords :
Bragg gratings; fibre optic sensors; fluctuations; light reflection; optical design techniques; optical fibre losses; optical resonators; fiber Bragg gratings; fiber lead loss; fiber-optic intensity sensors; insertion losses; laser source intensity fluctuations; remote fiber-optic intensity sensors; ring resonators; self-referencing sensors; sensor sensitivity; Fiber lasers; Fluctuations; Frequency; Interference; Laser modes; Laser theory; Optical fiber sensors; Optical reflection; Optical ring resonators; Ring lasers; Fiber-optic sensor; intensity-based sensor; microfibers; ring resonator; self-referencing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.885640
