Key-Space-Enhanced Optical Chaos Secure Communication Scheme Using Integrated Mutually Coupled Lasers
We present a key-space-enhanced optical chaos secure communication scheme using a pair of integrated four-section semiconductor lasers as transceivers, which are commonly driven by a DFB laser with bidirectional injection. The transceiver consists of two DFB laser sections, which are mutually couple...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/11/12/1144 |
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| Summary: | We present a key-space-enhanced optical chaos secure communication scheme using a pair of integrated four-section semiconductor lasers as transceivers, which are commonly driven by a DFB laser with bidirectional injection. The transceiver consists of two DFB laser sections, which are mutually coupled through a passive phase section and an amplifier section. The center frequencies, bias currents, coupling rate, and phase shift of the integrated laser can be used as physical key parameters and thus enhance the dimension of key space. The numerical results show that a physical key space of about 2<sup>70</sup> is achieved with a data rate of 10 Gbit/s. |
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| ISSN: | 2304-6732 |