All-fiber broadband spectral acousto-optic modulation of a tubular-lattice hollow-core optical fiber.
Opt Lett
; 49(3): 690-693, 2024 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-38300091
ABSTRACT
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 (7.7â
cm) and low drive voltages (10â
V). Modulated spectral bands with 20â
nm half-width and maximum depths greater than 60% are achieved. The resonant notch wavelength is tuned from 743 to 1355â
nm (612â
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.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
/
Opt. lett. (Online)
/
Optics letters (Online)
Ano de publicação:
2024
Tipo de documento:
Article