Abstract
To attain secure fiber-optic transmissions at a high rate, a realizable scheme is proposed in this paper, that can achieve 10-Gsymbol/s quantum noise encryption based on intensity modulation. Specifically, a dual digital-to-analog converter (DAC) is used to drive a single-drive Mach–Zehnder modulator. Then, to demonstrate the advantage of this scheme, a trial of 10-Gsymbol/s single-channel transmissions over 30 km are confirmed at 4096 intensity levels. Furthermore, specific indicators that affect secure transmissions are analysed, such as the number of modulation levels and noise masking. Finally, experimental results show that a masking number of 370 is achieved to resist direct detection attacks at the 4096 signal levels. Multilevel optical signals are hidden in the quantum noise. It is also apparent that the proposed modulation method realizes highly secure fiber-optic transmission.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
