Autor(es)

Da Silva, Ricardo E. ; Osorio, Jonas H. ; Rodrigues, Gabriel L. ; Webb, David J. ; Gerome, Frederic ; Benabid, Fetah ; Cordeiro, Cristiano M. B. ; Franco, Marcos A. R.

• Tipo de documento: Artigo Científico
• Fonte: OPTICS LETTERS; v. 49, n. 3, p. 4-pg., 2024-02-01.

Resumo

We demonstrate a broadband acousto-optic notch filter based on a tubular -lattice hollow -core fiber for the first time to our knowledge. The guided optical modes are modulated by acoustically induced dynamic long -period gratings along the fiber. The device is fabricated employing a short interaction length (7.7 cm) and low drive voltages (10 V). Modulated spectral bands with 20 nm half -width and maximum depths greater than 60% are achieved. The resonant notch wavelength is tuned from 743 to 1355 nm (612 nm span) by changing the frequency of the electrical signal. The results indicate a broader tuning range compared to previous studies using standard and hollow -core fibers. It further reveals unique properties for reconfigurable spectral filters and fiber lasers, pointing to the fast switching and highly efficient modulation of all -fiber photonic devices. (c) 2024 Optica Publishing Group (AU)

• Processo FAPESP: 22/10584-9 - Investigação numérica de fibras ópticas especiais para aplicação em sensores e transmissores ultrassônicos banda larga
• Beneficiário: Ricardo Ezequiel da Silva
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado