300 km-ultralong Raman fiber lasers using a distributed mirror for sensing applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

martins, h (Autor) Outra; marques, mb (Autor) FCUP; frazao, o (Autor) Outra

Revista

Título: Optics Express

Vol. 19

Páginas: 18149-18154

ISSN: 1094-4087

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 21 Citações

Scopus - 28 Citações

Outras Informações

ID Authenticus: P-002-MKM

DOI: 10.1364/oe.19.018149

Abstract (EN): Several configurations of ultralong Raman fiber lasers (URFL) based on a distributed mirror combined with Bragg gratings or fiber loop mirrors are studied. Two continuous-wave URFL configurations, with single and cascaded cavities using fiber Bragg gratings as mirrors are explored for a 300 km long fiber. For optical sensing, the cavity length was optimized for 250 km using one of the gratings an intensity sensor. Another URFL configuration based in a fiber loop mirror is also reported. For optical sensing using a 300 km long fiber it is shown that the best choice is a hybrid configuration. The sensitivity of the FBG laser sensor range was from (76 +/- 2) x 10(-6) mu epsilon(-1) (for lower strain) to (9.0 +/- 0.4) x 10 -6 mu epsilon(-1) (for higher strain). (C) 2011 Optical Society of America

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6