Wavelength Tunable Filter Based on Acousto-Optic Modulation of a Double-Core Fiber

Isabela B. Javorsky*, Ricardo E. Silva, Alexandre A.P. Pohl

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Article number8723399
Pages (from-to)1135-1138
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number14
Early online date27 May 2019
Publication statusPublished - 15 Jul 2019


  • Acousto-optic modulation
  • double-core fiber
  • tunable filter


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