Long-Period Gratings Dynamic Interrogation With Modulated Fiber Bragg Gratings and Optical Amplification

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Carvalho, JP (Author) Other; Coelho, L (Author) Other; Pontes, MJ (Author) Other; Barbero, AP (Author) Other; Martinez, MA (Author) Other; Ribeiro, RM (Author) Other; Weyl, J (Author) Other; Baptista, JM (Author) Other; Giraldi, MTR (Author) Other; Dias, I (Author) Other; Santos, JL (Author) FCUP; Frazao, O (Author) FCUP

Journal

Title: IEEE Sensors Journal

Vol. 12

Pages: 179-183

ISSN: 1530-437X

Publisher: IEEE

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 8 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-002-HHH

DOI: 10.1109/jsen.2011.2128305

Abstract (EN): It is reported a long-period grating (LPG) dynamic interrogation technique based on the modulation of fiber Bragg gratings located in the readout unit of the system. It permits to attenuate the effect of the 1/f noise of the electronics in the resolution of the LPG-based sensing head. The concept is tested to detect variations of the external refractive index and a resolution of 2.0 x 10(-4) NIR was achieved without system optimization. Additionally, the effect in the sensor resolution when introducing Erbium and Raman optical amplification is experimentally investigated.

Language: English

Type (Professor's evaluation): Scientific