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  • Received: Mar. 13, 2015

    Accepted: Jun. 19, 2015

    Posted: Jan. 23, 2019

    Published Online: Sep. 14, 2018

    The Author Email: Guangqiong Xia (gqxia@swu.edu.cn), Zhengmao Wu (zmwu@swu.edu.cn)

    DOI: 10.3788/COL201513.091401

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    Li Zhou, Guangqiong Xia, Zhuqiang Zhong, Jiagui Wu, Shuntian Wang, Zhengmao Wu. Time-delay signature concealment of polarization-resolved chaos outputs in vertical-cavity surface-emitting lasers with variable-polarization filtered optical feedback[J]. Chinese Optics Letters, 2015, 13(9): 091401

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Chinese Optics Letters, Vol. 13, Issue 9, 091401 (2015)

Time-delay signature concealment of polarization-resolved chaos outputs in vertical-cavity surface-emitting lasers with variable-polarization filtered optical feedback

Li Zhou, Guangqiong Xia*, Zhuqiang Zhong, Jiagui Wu, Shuntian Wang, and Zhengmao Wu**

Author Affiliations

  • School of Physical Science and Technology, Southwest University, Chongqing 400715, China

Abstract

Through employing permutation entropy and the self-correlation function, the time-delay signature (TDS) of a vertical-cavity surface-emitting laser (VCSEL) with variable-polarization filtered optical feedback (VPFOF) is evaluated theoretically. The work shows that the feedback rate η, polarizer angle θp, and filter bandwidth Λ have an obvious influence on the TDS. The evolution maps of the TDS in parameter space (η,Λ) and (η,θp) are simulated for searching the chaos with weak TDS. Furthermore, compared with a VCSEL with polarization-preserved filtered optical feedback and a VCSEL with variable-polarization mirror optical feedback, this VPFOF–VCSEL shows superiority in TDS suppression.