Open AccessAll-fiber 10 MHz acousto-optic modulator of a fiber Bragg grating at 1060 nm wavelength
Author(s) -
Ricardo E. Silva,
Tobias Tieß,
Martin Becker,
Tina Eschrich,
Manfred Rothhardt,
Matthias Jäger,
Alexandre de Almeida Prado Pohl,
Hartmut Bartelt
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.025972
Subject(s) - fiber bragg grating , optics , materials science , grating , blazed grating , wavelength , modulation (music) , long period fiber grating , frequency modulation , bandwidth (computing) , acousto optics , optical fiber , diffraction grating , optoelectronics , fiber optic sensor , dispersion shifted fiber , physics , telecommunications , acoustics , computer science
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.