Tunable optical delays based on Brillouin dynamic grating in a polarization maintaining fiber

초록

We demonstrate a novel kind of tunable optical delays based on dynamic grating generated by Brillouin scattering in an optical fiber. An axial strain gradient is applied to a 15m section of a polarization-maintaing fiber, and the Brillouin reflection grating is generated position-selectively by controlling the optical frequencies of Brillouin pump waves.