Abstract
A tunable notch filter is acoustically modulated in the transmission spectrum of a double-core optical fiber. Flexural acoustic waves dynamically change the coupling power and the wavelength of the propagating modes, allowing to switch and tune wavelengths between the two cores. A maximum modulation depth of 5.4 dB and a tuning wavelength range of 8.4 nm are achieved with the present configuration. The results indicate new possibilities for application in space division multiplexing systems, dynamic couplers, gain equalizers, and fibers lasers.
| Original language | English |
|---|---|
| Article number | 8723399 |
| Pages (from-to) | 1135-1138 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 31 |
| Issue number | 14 |
| Early online date | 27 May 2019 |
| DOIs | |
| Publication status | Published - 15 Jul 2019 |
Funding
Manuscript received March 25, 2019; revised May 14, 2019; accepted May 18, 2019. Date of publication May 27, 2019; date of current version June 25, 2019. This work was supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and in part by the Fundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Estado do Paraná. (Corresponding author: Isabela B. Javorsky.) The authors are with the CPGEI—Graduate Program in Electrical Engineering and Computer Science, Federal University of Technology-Paraná, Curitiba 80230-901, Brazil (e-mail: [email protected]).
Keywords
- Acousto-optic modulation
- double-core fiber
- tunable filter
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