Time delay signature concealment of optical feedback induced chaos in an external cavity semiconductor laser.
The time delay (TD) signature concealment of optical feedback induced chaos in an external cavity semiconductor laser is experimentally demonstrated. Both the evolution curve and the distribution map of TD signature are obtained in the parameter space of external feedback strength and injection current. The optimum parameter scope of the TD signature concealment is also specified. Furthermore, the approximately periodic evolution relation between TD signature and external cavity length is observed and indicates that the intrinsic relaxation oscillation of semiconductor laser may play an important role during the process of TD signature suppression.
Wu
Jia-Gui
JG
School of Physics, Southwest University, Chongqing, 400715, China.
Xia
Guang-Qiong
GQ
Tang
Xi
X
Lin
Xiao-Dong
XD
Deng
Tao
T
Fan
Li
L
Wu
Zheng-Mao
ZM
D000465:Algorithms; D004867:Equipment Design; D007834:Lasers; D054023:Lasers, Semiconductor; D008422:Materials Testing; D017711:Nonlinear Dynamics; D055095:Optics and Photonics; D009991:Oscillometry / Q000379:methods; D012666:Semiconductors; D013997:Time Factors