Optimization of interrogation methods for sensors based on optical microbubble resonators

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2019

Autores

dos Santos, PSS (Autor) Outra; Coelho, L (Autor) FCUP; Jorge, PAS (Autor) FCUP

Ata de Conferência Internacional

Título: FOURTH INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS

4th International Conference on Applications of Optics and Photonics (AOP)

Univ Lisbon, Lisbon, PORTUGAL, MAY 31-JUN 04, 2019

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00R-8AQ

DOI: 10.1117/12.2530919

Abstract (EN): Optical microbubble resonators are among the highest sensitivity optical sensors. In the context of its application in the detection of water micro contaminants, in portable systems, their interrogation must be made by tracking the resonant wavelength peak position with the highest accuracy possible, at a reasonable cost. In this work different laser sources and scanning methods were tested and compared, aiming the development of a portable prototype. Each tunable laser source, was evaluated using a C2H2 Gas cell, which provided an absolute wavelength reference. Light transmitted through the cell was recorded using a photodetector and a software controlled feedback loop, enabling locking into selected reference peaks. Three distinct scanning methods were tested and compared for each laser source: large and short-range laser scanning and external waveform dithering, from which minimum standard deviations of 20, 0.18, and 0.07 pm, were obtained, respectively.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6