Abstract

We report a novel kind of all-optical dynamic grating based on Brillouin scattering in a polarization maintaining fiber (PMF). A moving acoustic grating is generated by stimulated Brillouin scattering between writing beams in one polarization and used to reflect an orthogonally polarized reading beam at different wavelengths. The center wavelength of the grating is controllable by detuning the writing beams, and the $3\mathrm{dB}$ bandwidth of $\sim 80\mathrm{MHz}$ is observed with the tunable reflectance of up to 4% in a $30\mathrm{m}$ PMF.

© 2008 Optical Society of America

Correlation-based distributed measurement of a dynamic grating spectrum generated in stimulated Brillouin scattering in a polarization-maintaining optical fiber

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