摘要A long optically controlled delay line enhanced by ring configuration is demonstrated by using the group-velocity control of signal pulses based on stimulated Brillouin scattering. In experiment, two optical fibre ring cavities are used: one is used as the Brillouin laser, providing single-mode Stokes wave as probe wave; the other is used as the Brillouin amplifier, working as slow light medium. We achieve a maximum time delay of 215ns using the ring Brillouin amplifier, five times larger than the input probe pulse width of 40ns. In the meantime, a considerable pulse broadening is observed, which agrees well with the theoretical prediction based on linear theory.
Abstract：A long optically controlled delay line enhanced by ring configuration is demonstrated by using the group-velocity control of signal pulses based on stimulated Brillouin scattering. In experiment, two optical fibre ring cavities are used: one is used as the Brillouin laser, providing single-mode Stokes wave as probe wave; the other is used as the Brillouin amplifier, working as slow light medium. We achieve a maximum time delay of 215ns using the ring Brillouin amplifier, five times larger than the input probe pulse width of 40ns. In the meantime, a considerable pulse broadening is observed, which agrees well with the theoretical prediction based on linear theory.
DONG Yong-Kang;LU Zhi-Wei;LI Qiang;GAO Wei. Long Optical Delay Lines Enhanced by Ring Configuration in Optical Fibres[J]. 中国物理快报, 2007, 24(6): 1586-1588.
DONG Yong-Kang, LU Zhi-Wei, LI Qiang, GAO Wei. Long Optical Delay Lines Enhanced by Ring Configuration in Optical Fibres. Chin. Phys. Lett., 2007, 24(6): 1586-1588.
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2007, Vol. 24 
