Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

doi:10.1088/1674-1056/19/7/070515

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 70515-070515.doi: 10.1088/1674-1056/19/7/070515

Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

李光辉, 王安帮, 冯野, 汪洋

Physics Department, College of Science, Taiyuan University of Technology, Taiyuan 030024, China

收稿日期:2009-11-12 出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 60577019 and 60777041) and the International Cooperation Project of Shanxi Province, China (Grant No. 2007081019).

Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

Li Guang-Hui (李光辉), Wang An-Bang (王安帮), Feng Ye (冯野), Wang Yang (汪洋)

Physics Department, College of Science, Taiyuan University of Technology, Taiyuan 030024, China

Received:2009-11-12 Online:2010-07-15 Published:2010-07-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 60577019 and 60777041) and the International Cooperation Project of Shanxi Province, China (Grant No. 2007081019).

摘要/Abstract

摘要： This paper numerically demonstrates synchronization and bidirectional communication without delay line by using two semiconductor lasers with strong mutual injection in a face-to-face configuration. These results show that both of the two lasers' outputs synchronize with their input chaotic carriers. In addition, simulations demonstrate that this kind of synchronization can be used to realize bidirectional communications without delay line. Further studies indicate that within a small deviation in message amplitudes of two sides (±6%), the message can be extracted with signal-noise-ratio more than 10 dB; and the signal-noise-ratio is extremely sensitive to the message rates mismatch of two sides, which may be used as a key of bidirectional communication.

Abstract: This paper numerically demonstrates synchronization and bidirectional communication without delay line by using two semiconductor lasers with strong mutual injection in a face-to-face configuration. These results show that both of the two lasers' outputs synchronize with their input chaotic carriers. In addition, simulations demonstrate that this kind of synchronization can be used to realize bidirectional communications without delay line. Further studies indicate that within a small deviation in message amplitudes of two sides (±6%), the message can be extracted with signal-noise-ratio more than 10 dB; and the signal-noise-ratio is extremely sensitive to the message rates mismatch of two sides, which may be used as a key of bidirectional communication.

Key words: synchronization, bidirectional communication, without delay line, semiconductor laser

中图分类号: (Communication using chaos)

05.45.Vx

05.45.Xt (Synchronization; coupled oscillators) 42.55.Px (Semiconductor lasers; laser diodes)

李光辉, 王安帮, 冯野, 汪洋. Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers[J]. 中国物理B, 2010, 19(7): 70515-070515.

Li Guang-Hui (李光辉), Wang An-Bang (王安帮), Feng Ye (冯野), Wang Yang (汪洋). Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers[J]. Chin. Phys. B, 2010, 19(7): 70515-070515.

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Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

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