Optical fiber refractometry based on multimode interference

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Orlando Frazao (Author) FCUP; Susana O Silva (Author) FCUP; Jaime Viegas (Author) Other; Luis A Ferreira (Author) Other; Francisco M Araujo (Author) Other; Jose L Santos (Author) FCUP

Journal

Title: Applied Optics

Vol. 50

Pages: E184-E188

ISSN: 1559-128X

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 46 Citations

Scopus - 50 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-N4T

DOI: 10.1364/ao.50.00e184

Abstract (EN): This paper presents an overview of optical fiber sensors based on multimode interference with a focus on refractometric applications. A specific configuration is presented to measure the refractive index of the surrounding liquid based on the Fresnel reflection in the fiber tip, combined with a simple interrogation technique that uses two fiber Bragg gratings as discrete optical sources, with the measurand information encoded in the relative intensity variation of the reflected signals. A resolution of 1.75 x 10(-3) RIU is achieved. (C) 2011 Optical Society of America

Language: English

Type (Professor's evaluation): Scientific