Optical refractometer based on large-core air-clad photonic crystal fibers

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

Authors

Susana Silva (Author) FCUP; Santos, JL (Author) FCUP; Xavier X Malcata (Author) Other; Jens Kobelke (Author) Other; Kay Schuster (Author) Other; Frazao, O (Author) FCUP

Journal

Title: Optics Letters

Vol. 36

Pages: 852-854

ISSN: 0146-9592

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 32 Citations

Scopus - 33 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-T8C

DOI: 10.1364/ol.36.000852

Abstract (EN): A large-core air-clad photonic crystal fiber-based sensing structure is described, which is sensitive to refractive index. The sensing head is based on multimodal interference, and relies on a single-mode/large-core air-clad photonic crystal fiber (PCF)/single-mode fiber configuration. Using two distinct large-core air-clad PCF geometries-one for refractive index measurement and the other for temperature compensation, it was possible to implement a sensing head sensitive to refractive index changes in water as induced by temperature variations. The results indicated the high sensitivity of this sensing head to refractive index variations of water, and a resolution of 3: 4 x 10(-5) refractive index units could be achieved. (C) 2011 Optical Society of America

Language: English

Type (Professor's evaluation): Scientific