title: Generation of polarization-resolved wideband unpredictability-enhanced chaotic signals based on vertical-cavity surface-emitting lasers subject to chaotic optical injection.
abstract: A system framework is proposed and analyzed for generating polarization-resolved wideband unpredictability-enhanced chaotic signals based on a slave vertical-cavity surface-emitting laser (S-VCSEL) driven by an injected optical chaos signal from a master VCSEL (M-VCSEL) under optical feedback. After calculating the time series outputs from the M-VCSEL under optical feedback and the S-VCSEL under chaotic optical injection by using the spin-flip model (SFM), the unpredictability degree (UD) is evaluated by permutation entropy (PE), and the bandwidth of the polarization-resolved outputs from the M-VCSEL and S-VCSEL are numerically investigated. The results show that, under suitable parameters, both the bandwidth and UD of two polarization components (PCs) outputs from the S-VCSEL can be enhanced significantly compared with that of the driving chaotic signals output from the M-VCSEL. By simulating the influences of the feedback and injection parameters on the bandwidth and UD of the polarization-resolved outputs from S-VCSEL, related operating parameters can be optimized.
authors.forename: Jian-Jun
authors.initials: JJ
authors.lastname: Chen
authors.forename: Zheng-Mao
authors.initials: ZM
authors.lastname: Wu
authors.forename: Xi
authors.initials: X
authors.lastname: Tang
authors.forename: Tao
authors.initials: T
authors.lastname: Deng
authors.forename: Li
authors.initials: L
authors.lastname: Fan
authors.forename: Zhu-Qiang
authors.initials: ZQ
authors.lastname: Zhong
authors.forename: Guang-Qiong
authors.initials: GQ
authors.lastname: Xia