Generation and synchronization of feedback-induced chaos in semiconductor ring lasers by injection-locking |
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| Authors: | Guohui Yuan Xin ZhangZhuoran Wang |
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| Institution: | State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, 610054 Sichuan, China |
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| Abstract: | A smart scheme for chaotic signal generation in a semiconductor ring laser (SRL) with optical feedback is proposed and investigated numerically. The chaotic oscillation in the SRL can be generated by the partial reflection of the laser output. Time series, attracter and the power spectrum, as well as the Lyapunov exponent spectrum, are calculated and analyzed. We also study the synchronization scheme of feedback-induced chaos in SRLs by optical injection that consists of a drive SRL with optical feedback and a response SRL with optical injection from the drive laser. High-quality synchronization is achieved with suitable injection strength and detuning frequency between the drive and the response SRLs. |
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| Keywords: | Chaos communication Synchronization Semiconductor ring laser (SRL) Optical feedback |
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