Radio-Frequency Self-Referencing Technique With Enhanced Sensitivity for Coarse WDM Fiber Optic Intensity Sensors

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Julio Montalvo (Autor) Outra; Orlando Frazao (Autor) Outra; Jose Luis Santos (Autor) FCUP; Carmen Vazquez (Autor) Outra; Jose Manuel Baptista (Autor) Outra

Revista

Título: Journal of Lightwave Technology

Vol. 27

Páginas: 475-482

ISSN: 0733-8724

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 18 Citações

Scopus - 23 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

ID Authenticus: P-003-MXB

DOI: 10.1109/jlt.2008.2004949

Abstract (EN): A self-referenced passive optical network (PON) with coarse wavelength division multiplexing (CWDM) is reported for remotely addressing optical intensity sensors with enhanced sensitivity. The self-referencing remote configuration is described as a finite-impulse-response (FIR) filter in reflective operation using two fiber Bragg gratings (FBG) and a fiber delay line. The antisymmetrical phase response of the configuration permits to achieve a self-referencing measurement parameter two times more sensitive than reported previously. To enhance the power budget of the network, CWDM devices with low insertion losses are used for spectral splitting of a radio-frequency (RF) modulated broadband light source (BLS). The network topology and the sensor's interrogation technique are theoretically analyzed and experimental results validating the models are reported.

Idioma: Inglês

Tipo (Avaliação Docente): Científica