Dynamic Interrogation of Long Period Gratings with Modulated Fibre Bragg Gratings

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

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

Conference proceedings International

Title: FOURTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

Fourth European Workshop on Optical Fibre Sensors

Porto, PORTUGAL, SEP 08-10, 2010

Indexing

ISI Web of Knowledge - 0 Citations

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Scopus - 2 Citations

Scientific classification

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

Other information

Authenticus ID: P-003-AZJ

DOI: 10.1117/12.866444

Abstract (EN): It is reported a LPG dynamic interrogation technique based on the modulation of fibre Bragg gratings located in the readout unit that 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 2.0x10 (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