title: Time delay signature concealment of optical feedback induced chaos in an external cavity semiconductor laser.
abstract: 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.
authors.affiliation: School of Physics, Southwest University, Chongqing, 400715, China.
authors.forename: Jia-Gui
authors.initials: JG
authors.lastname: Wu
authors.forename: Guang-Qiong
authors.initials: GQ
authors.lastname: Xia
authors.forename: Xi
authors.initials: X
authors.lastname: Tang
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Lin
authors.forename: Tao
authors.initials: T
authors.lastname: Deng
authors.forename: Li
authors.initials: L
authors.lastname: Fan
authors.forename: Zheng-Mao
authors.initials: ZM
authors.lastname: Wu
mesh_terms: 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