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12 November 2010 Influence of asymmetrical bias currents on chaos synchronization performance of mutually coupled semiconductor lasers
Tao Deng, Guang-Qiong Xia, Yuan He, Yuan-Yuan Liu, Zheng-Mao Wu
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Proceedings Volume 7844, Semiconductor Lasers and Applications IV; 78440R (2010) https://doi.org/10.1117/12.870053
Event: Photonics Asia 2010, 2010, Beijing, China
Abstract
We experimentally and numerically investigate the chaos synchronization characteristics of mutually coupled system consisted of two semiconductor lasers (SLs) with asymmetrical bias currents. The results show that, for the case of the two SLs with identical free running oscillation frequencies, the mutually coupled system can achieve excellent chaos synchronization under relatively large asymmetrical bias currents. Frequency detuning Δƒ (Δƒ=ƒ1-ƒ2, where ƒ1, ƒ2 are the free running frequencies of SL1 and SL2, respectively) has obvious influence on the synchronization performance. For the case of the SL1 biased at a relatively much larger current compared with that of SL2, the synchronization performance will be degraded with the increase of the positive frequency detuning (ƒ1>ƒ2), while the synchronization performance can be further improved with suitable negative frequency detuning. The simulated results are basically consistent with experimental results.
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Tao Deng, Guang-Qiong Xia, Yuan He, Yuan-Yuan Liu, and Zheng-Mao Wu "Influence of asymmetrical bias currents on chaos synchronization performance of mutually coupled semiconductor lasers", Proc. SPIE 7844, Semiconductor Lasers and Applications IV, 78440R (12 November 2010); https://doi.org/10.1117/12.870053
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KEYWORDS
Chaos
Semiconductor lasers
Laser sintering
Laser systems engineering
Telecommunications
Beam splitters
Optical filtering
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