Long-time dynamics of a vertical-cavity surface-emitting laser under optical feedback

Pramana: Journal of physics

S DAMODARAKURUP^1¹  R SOORAT^2,3²  A VUDAYAGIRI^3³ 

[1]Department of Physics,Government College Kanjiramkulam,Kanjiramkulam,Thiruvananthapuram 695 524, India^1

[2]R C Bose Centre for Cryptology and Security, Indian Statistical Institute Kolkata, 203 Barrackpore Trunk Road, Kolkata 700 108, India^2

[3]School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500 046, India^3

关键词: Vertical-cavity surface-emitting laser;    optical feedback;    chaos;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

External optical feedback in vertical-cavity surface-emitting laser (VCSEL) is found to influence its output intensity.We studied the effect of the amount of total output polarisation feedback and polarisation-selective feedback on the output intensities of a VCSEL for a low-resolution sampling and for long temporal duration. A 40 μs resolution time-series correlation analysis is performed for different feedback conditions and the characteristicdynamics is investigated.We found a correlated fluctuation in VCSEL output for a moderate amount of total feedbackand polarised feedback. The period of such fluctuations is found to be reduced from total feedback to the polarised feedback of the system.

【 授权许可】

CC BY