All-fiber 10 MHz acousto-optic modulator of a fiber Bragg grating at 1060 nm wavelength

R.E. Silva, T. Tiess, M. Becker, T. Eschrich, M. Rothhardt, M. Jäger, A.A.P. Pohl, H. Bartelt

Research output: Contribution to journalArticlepeer-review

Abstract

Acousto-optic modulation of a 1 cm fiber Bragg grating at 10.9 MHz frequency and 1065 nm wavelength is demonstrated for the first time. A special modulator design is employed to acoustically induce a dynamic radial long period grating which couples power of the fundamental mode to the higher-order modes supported by the Bragg grating. A modulated reflection band with a depth of 16 dB and 320 pm bandwidth has been achieved. The results indicate a higher modulation frequency compared to previous studies using flexural acoustic waves. In addition, the reduction of the grating length and the modulator size points to compact and faster acousto-optic modulators.
Original languageEnglish
Pages (from-to)25972-25978
JournalOptics Express
Volume23
Issue number20
DOIs
Publication statusPublished - 24 Sep 2015

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