期刊
OPTICS EXPRESS
卷 28, 期 25, 页码 37919-37935出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.412068
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资金
- National Key Research and Development Program of China [2019YFB1803500]
- National Natural Science Foundation of China [61822509, 61671316, 61805170, 61731014, 61805171, 61961136002]
- Shanxi Talent Program [201805D211027]
- Shanxi 1331 Project Key Innovative Team
- Program for Top Young and Middle-aged Innovative Talents of Shanxi
- Program for Guangdong Introducing Innovative and Enterpreneurial Teams
- Open Fund of Guangdong Provincial Key Laboratory of Information Photonics Technology [GKPT20-01]
- International Cooperation of Key R&D Program of Shanxi Province [201903D421012]
We propose a scheme of high-speed physical key distribution based on dispersion-shift-keying chaos synchronization in two semiconductor lasers without external feedback (response lasers), which are driven by a common external-cavity semiconductor laser (drive laser). In this scheme, the dispersion introduces a laser field beating-induced nonlinear transformation to the outputs of drive laser and renders the correlation elimination between the drive and response lasers improving the security of key distribution. Moreover, the commonly driven lasers without external feedback constitute an open-loop synchronization configuration and yield a short synchronization recovery time of a subnanosecond supporting the implementation of high-speed key distribution. With these two merits, we numerically demonstrate a 1.2 Gb/s secure key distribution with a bit error ratio below 3.8x10(-3). (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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