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《Acta Photonica Sinica》 2018-10
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Generation of Tunable Chaotic Signal with Controllable Bandwidth Based on Weak-resonant-cavity Fabry-Perot Laser Diodes

LIU Lin-jie;DENG Tao;WU Zheng-mao;TIAN Zhi-fu;XIA Guang-qiong;School of Physical Science and Technology,Southwest University;  
A scheme for generating tunable chaotic signals with controllable bandwidth was proposed and experimentally demonstrated based on two weak-resonant-cavity Fabry-Perot laser diodes,which is realized by that the chaotic signal from a weak-resonant-cavity Fabry-Perot laser diode(named as master weak-resonant-cavity Fabry-Perot laser diode)with tunable fiber Bragg grating optical feedback is unidirectionally injected into another weak-resonant-cavity Fabry-Perot laser diode(named as slave weakresonant-cavity Fabry-Perot laser diode).The experimental results show that,through adjusting the central wavelength of tunable fiber Bragg grating and feedback strength,master weak-resonant-cavity Fabry-Perot laser diode can output chaotic signal whose central wavelength can be tuned within the tunable range of tunable fiber Bragg grating.Further injecting the chaotic signal from master weakresonant-cavity Fabry-Perot laser diode into slave weak-resonant-cavity Fabry-Perot laser diode,the bandwidth of the tunable chaotic signal can be adjusted within a large range by varying the injection power and detuning frequency.
【Fund】: 国家自然科学基金(Nos.61475127 61575163 61775184 61875167);; 重庆市自然科学基金(No.CSTC2016jcyjA0082);; 中央高校专项业务费(No.XDJK2017B012)资助~~
【CateGory Index】: TN248
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