| Original Articles |
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Long Optical Delay Lines Enhanced by Ring Configuration in Optical Fibres |
| DONG Yong-Kang;LU Zhi-Wei;LI Qiang;GAO Wei |
| Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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DONG Yong-Kang, LU Zhi-Wei, LI Qiang et al 2007 Chin. Phys. Lett. 24 1586-1588 |
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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.
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| Keywords:
42.65.Es
42.81.Dp
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Received: 09 December 2006
Published: 17 May 2007
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| PACS: |
42.65.Es
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(Stimulated Brillouin and Rayleigh scattering)
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42.81.Dp
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(Propagation, scattering, and losses; solitons)
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