Fiber Optic Sensor Interrogation Using Microwave Photonics Filtering Technique

Autores UPV
Año
CONGRESO Fiber Optic Sensor Interrogation Using Microwave Photonics Filtering Technique

Abstract

In this review systems to interrogate photonic sensors based on long fiber Bragg gratings (FBGs) are illustrated and experimentally validated. The FBG-based devices are used as quasi-distributed sensors and appear able to detect and measure the precise location of several spot events. The principle of operation is based on a technique used to analyze microwave photonics (MWP) filters. Several events can be detected along the FBG device with a good spatial accuracy using a modulator and a photo-detector (PD) with a modest bandwidth. The simple proposed schemes result cost effective, intrinsically robust against environmental changes and easy to reconfigure.