Remote optical fiber sensor with Raman amplification

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2011

Autores

Thiago V N Coelho (Autor) Outra; Guerreiro, A (Autor) FCUP; Pedro A S Jorge (Autor) Outra; Pontes, MJ (Autor) Outra

Ata de Conferência Internacional

Título: International Conference on Applications of Optics and Photonics

International Conference on Applications of Optics and Photonics

Braga, Portugal, 3 a 7 de Maio de 2011

Indexação

ISI Web of Knowledge - 0 Citações

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Outras Informações

ID Authenticus: P-002-X83

DOI: 10.1117/12.892187

Abstract (EN): In this work, we analyze a remote optical sensor system composed of two Fiber Bragg Gratings (FBGs) and one Long Period Grading (LPG) capable of simultaneously sensing the temperature and the refractive index, separated by 50 km from the optical source and the interrogation unit. Since the active components of the system and the sensor head are separated over such a large distance, it is necessary to consider Raman amplification o strengthen the optical signal. We present both experimental measurements and the results of numerical simulations, which describe the signal evolution and predict the measurement results for a remote sensor based on a LPG. The simulation codes are also used to study a hybrid sensor composed of two FBGs with a LPG. We show that the power ratio between the two central wavelengths of the FBG has a linear relation with the change of refractive index of the sensored medium.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8