COHERENCE SENSING OF TIME-ADDRESSED OPTICAL-FIBER SENSORS ILLUMINATED BY A MULTIMODE LASER DIODE

• Tipo: Artigo em Revista Científica Internacional
• Data: 1991

Autores

SANTOS, JL (Autor) FCUP; JACKSON, DA (Autor) Outra

Revista

Título: Applied optics

Vol. 30

Páginas: 5068-5076

ISSN: 0003-6935

Editora: The Optical Society

Indexação

ISI Web of Knowledge - 19 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-001-Q8V

Abstract (EN): A reflective array of optical-fiber sensors multiplexed in time and with their status read using coherence sensing associated with directly modulated multimode laser-diode illumination is investigated. Sensor sensitivity as determined by primary noise sources is evaluated and numerical results are presented. The concept is demonstrated with two all-fiber Michelson interferometers and applied to the measurement of periodic and quasi-static parameters. It is shown that the effect of feedback light into the laser cavity on the level of the system noise floor is negligible, making unnecessary the use of source optical isolation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9