Optical complexity in external cavity semiconductor laser

OPTICS COMMUNICATIONS

卷:387

Article

Rondoni, Lamberto^1,2,3  Ariffin, M. R. K.^1,6,7  Varatharajoo, Renuganth^1,5  Mukherjee, Sayan⁴  Palit, Sanjay K.⁸  Banerjee, Santo^1,6 

[1] Univ Putra Malaysia, Malaysia Italy Ctr Excellence Math Sci, Serdang, Selangor, Malaysia

[2] Politecn Torino, Dipartimento Sci Matemat & Graphene, Polito Lab, Turin, Italy

[3] Ist Nazl Fis Nucl, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy

[4] Sivanath Sastri Coll, Dept Math, Kolkata 700029, India

[5] Univ Putra Malaysia, Dept Aerosp Engn, Serdang 43400, Selangor, Malaysia

[6] Univ Putra Malaysia, Inst Math Res, Serdang, Malaysia

[7] Univ Putra Malaysia, Fac Sci, Dept Math, Serdang, Selangor, Malaysia

[8] Calcutta Inst Engn & Management, Basic Sci & Humanities Dept, Kolkata 700040, India

关键词: Semiconductor laser;    Output power;    Chaotic dynamics;    Recurrence based entropy;    Time-delayed system;    Cross-correlation;   

DOI  :  10.1016/j.optcom.2016.11.011

来源: Elsevier

【 摘 要 】

In this article, the window based complexity and output modulation of a time delayed chaotic semiconductor laser (SL) model has been investigated. The window based optical complexity (OC), is measured by introducing the recurrence sample entropy (SampEn). The analysis has been done without and in the presence of external noise. The significant changes in the dynamics can be observed under induced noise with weak strength. It has also been found that there is a strong positive correlation between the output power and the complexity of the system with various sets of parameters. The laser intensity, as well as the OC can be increased with the incremental noise strength and the associated system parameters. Thus, optical complexity quantifies the system dynamics and its instabilities, since is strongly correlated with the laser outputs. This analysis can be applied to measure the laser instabilities and modulation of output power.

【 授权许可】

Free