中国物理B ›› 2010, Vol. 19 ›› Issue (9): 94210-094210.doi: 10.1088/1674-1056/19/9/094210
吴重庆1, 余贶琭1, 王拥军2, 忻向军2, 张晓磊2
Wang Yong-Jun(王拥军)a)†, Wu Chong-Qing(吴重庆)b), Xin Xiang-Jun(忻向军)a), Yu Kuang-Lu(余贶琭)b), and Zhang Xiao-Lei(张晓磊)a)
摘要: Optical buffers are critical for optical signal processing in future optical packet-switched networks. In this paper, a theoretical study as well as an experimental demonstration on a new optical buffer with large dynamical delay time is carried out based on cascaded double loop optical buffers (DLOBs). It is found that pulse distortion can be restrained by a negative optical control mode when the optical packet is in the loop. Noise analysis indicates that it is feasible to realise a large variable delay range by cascaded DLOBs. These conclusions are validated by the experiment system with 4-stage cascaded DLOBs. Both the theoretical simulations and the experimental results indicate that a large delay range of 1--9999 times the basic delay unit and a fine granularity of 25 ns can be achieved by the cascaded DLOBs. The performance of the cascaded DLOBs is suitable for the all optical networks.
中图分类号: