中国物理B ›› 2010, Vol. 19 ›› Issue (9): 94210-094210.doi: 10.1088/1674-1056/19/9/094210

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Investigation on performance of all optical buffer with large dynamical delay time based on cascaded double loop optical buffers

吴重庆1, 余贶琭1, 王拥军2, 忻向军2, 张晓磊2   

  1. (1)Institute of Optical Information, Beijing Jiaotong University, Key Laboratory of Education Ministry on Luminescence and Optical Information Technology, Beijing 100044, China; (2)School of Electronic Engineering, Beijing University of Posts and Telecommunications; Key Laboratory of Information Photonics and Optical Communications of Education Ministry; Beijing 100876, China
  • 收稿日期:2010-01-12 修回日期:2010-02-26 出版日期:2010-09-15 发布日期:2010-09-15
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. 2010CB328300), the National Natural Science Foundation of China (Grant Nos. 60677004 and 60702049), the Program for the New Century Excellent Talents in Universi

Investigation on performance of all optical buffer with large dynamical delay time based on cascaded double loop optical buffers

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)   

  1. a School of Electronic Engineering, Beijing University of Posts and Telecommunications; Key Laboratory of Information Photonics and Optical Communications of Education Ministry; Beijing 100876, China; b Institute of Optical Information, Beijing Jiaotong University, Key Laboratory of Education Ministry on Luminescence and Optical Information Technology, Beijing 100044, China
  • Received:2010-01-12 Revised:2010-02-26 Online:2010-09-15 Published:2010-09-15
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. 2010CB328300), the National Natural Science Foundation of China (Grant Nos. 60677004 and 60702049), the Program for the New Century Excellent Talents in University of China (Grant No. NECT-07-0111) and the Innovation Plan for Youth of Beijing University of Posts and Telecommunications.

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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.

Abstract: 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.

Key words: all optical packets switching, optical buffer with large delay range, signals impairment, noise analysis of semiconductor optical amplifier

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