Open AccessTime delay signature concealment of optical feedback induced chaos in an external cavity semiconductor laser
Author(s) -
Jiagui Wu,
Guang-Qiong Xia,
Xi Tang,
Xiaohui Lin,
Tao Deng,
Li Fan,
Zheng-Mao Wu
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.006661
Subject(s) - signature (topology) , semiconductor laser theory , physics , optics , laser , oscillation (cell signaling) , semiconductor , parameter space , optoelectronics , mathematics , statistics , geometry , biology , genetics
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.