Multimode interference tapered fiber refractive index sensors

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Biazoli, CR (Autor) Outra; Susana Silva (Autor) Outra; Franco, MAR (Autor) Outra; Frazao, O (Autor) FCUP; Cordeiro, CMB (Autor) Outra

Revista

Título: Applied Optics

Vol. 51 Nº 16

Páginas: 5941-5945

ISSN: 1559-128X

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 59 Citações

Scopus - 63 Citações

Outras Informações

ID Authenticus: P-002-6W5

DOI: 10.1364/ao.51.005941

Abstract (EN): Real-time monitoring of the fabrication process of tapering down a multimode-interference-based fiber structure is presented. The device is composed of a pure silica multimode fiber ( MMF) with an initial 125 mu m diameter spliced between two single-mode fibers. The process allows a thin MMF with adjustable parameters to obtain a high signal transmittance, arising from constructive interference among the guided modes at the output end of the MMF. Tapered structures with waist diameters as low as 55 mu m were easily fabricated without the limitation of fragile splices or difficulty in controlling lateral fiber alignments. The sensing device is shown to be sensitive to the external environment, and a maximum sensitivity of 2946 nm/refractive index unit in the refractive index range of 1.42-1.43 was attained. (c) 2012 Optical Society of America

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5