Science and Technology Division, Corning Incorporated, SP-AR-06-02, Corning, New York 14831, USA.
Opt Lett. 2012 Nov 15;37(22):4660-2. doi: 10.1364/ol.37.004660.
We report, for the first time (to our knowledge), generation of Brillouin dynamic gratings (BDGs) in few-mode optical fibers. A moving acoustic grating is generated by stimulated Brillouin scattering using a writing beam in one fiber mode, which is used to reflect a reading beam at a different wavelength in another fiber mode. With single-end pumping, a BDG with a tunable reflectance of up to 0.1% is demonstrated in a 15 km specially designed two-mode optical fiber.
我们首次（据我们所知）在多模光纤中产生了布里渊动态光栅（BDG）。通过在一根光纤模式中使用写入光束产生受激布里渊散射，从而产生移动的声光栅，该声光栅用于在另一根光纤模式中反射不同波长的读取光束。在单端泵浦下，在 15 km 特制的双模光纤中演示了具有高达 0.1%可调反射率的 BDG。
