| Full text | |
| Author(s): |
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.
Total Authors: 8
|
| Document type: | Journal article |
| Source: | OPTICS LETTERS; v. 49, n. 3, p. 4-pg., 2024-02-01. |
| 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 (7.7 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) | |
| FAPESP's process: | 22/10584-9 - Numerical investigation of specialty optical fibers for application in broadband ultrasonic sensors and transmitters |
| Grantee: | Ricardo Ezequiel da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |