Impacts of mismatched intrinsic parameter on leader-laggard synchronization between two mutually coupled VCSELs

doi:10.1007/s12200-011-0139-8

Front Optoelec Chin

2011, Vol. 4

Issue (3) : 298-307 https://doi.org/10.1007/s12200-011-0139-8

RESEARCH ARTICLE

Impacts of mismatched intrinsic parameter on leader-laggard synchronization between two mutually coupled VCSELs

Lingbo ZENG¹, Tao DENG¹, Zhengmao WU¹, Jiagui WU¹, Guangqiong XIA^1,2(

)

1. School of Physics, Southwest University, Chongqing 400715, China; 2. State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

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Abstract

Based on spin-flip model (SFM), the impacts of mismatched intrinsic parameter on leader-laggard chaos synchronization between two mutually coupled vertical-cavity surface-emitting lasers (VCSELs) have been investigated numerically. Results show that, for two VCSELs with identical intrinsic parameter, the switching point of leader-laggard caused by continually varying frequency detuning or injection rate detuning is located at zero frequency detuning or zero injection rate detuning, which indicates that the VCSEL with higher frequency or subject to lower injection level plays a leader role. However, for two VCSELs with mismatched intrinsic parameter, the switched point of leader-laggard will deviate from zero frequency detuning or zero injection rate. Therefore, compared with the results obtained under matched intrinsic parameter, the opposite results have been observed in the range between zero detuning and switching point. Additionally, the offsets of switching point induced by different intrinsic parameters are different, and the influence of line-width enhancement factor is found to be the most significant.

Keywords vertical-cavity surface-emitting laser mutual coupling mismatched intrinsic parameter leader-laggard chaos synchronization

Corresponding Author(s): XIA Guangqiong,Email:gqxia@swu.edu.cn

Issue Date: 05 September 2011

Cite this article:

Lingbo ZENG,Tao DENG,Zhengmao WU, et al. Impacts of mismatched intrinsic parameter on leader-laggard synchronization between two mutually coupled VCSELs[J]. Front Optoelec Chin, 2011, 4(3): 298-307.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0139-8
https://academic.hep.com.cn/foe/EN/Y2011/V4/I3/298

Fig.1 Schematic diagram of two mutually coupled VCSELs (M: mirror)

Fig.2 (a) Time series of LP, LP of VCSEL1; (b) time series of LP, LP of VCSEL2; (c) corresponding cross-correlation coefficient of LP, LP between VCSEL1 and VCSEL2

Fig.3 Dependence of and on frequency detuning ( = –). (a) LP; (b) LP

Fig.4 Dependence of and on injection detuning ( = –). (a) LP; (b) LP

Fig.5 (circle) and (square) as a function of frequency detuning for a fixed mismatched (a) , (b) , (c) , (d) , and (e) of 10%. Left column is for LP, and right column is for LP

Fig.6 (circle) and (square) as a function of mismatched (a) , (b) , (c) , (d) , and (e) for a fixed frequency detuning of = 1 GHz. Left column is for LP, and right column is for LP

Fig.7 (circle) and (square) as a function of the detuning of injection strength for a fixed mismatched (a) , (b) , (c) , (d) , and (e) of 10%. Left column is for LP, and right column is for LP

Fig.8 (circle) and (square) as a function of mismatched (a) , (b) , (c) , (d) , and (e) for a fixed detuning of injection strength of = 1.5 GHz. Left column is for LP, and right column is for LP

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