Optical Direct-Detection System Based on Chaotic Encryption and Kramers-Kronig Receiver

Article Engineering, Electrical & Electronic

Security Enhancement in Coherent OFDM Optical Transmission With Chaotic Three-Dimensional Constellation Scrambling

Yiqun Zhang et al.

Summary: This paper proposes and experimentally demonstrates a novel hybrid chaos-based three-dimensional (3-D) constellation scrambling scheme to simultaneously improve the physical layer security and transmission performance of the coherent optical orthogonal frequency division multiplexing (CO-OFDM) system.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2022)

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Article Optics

Dispersion Suppressed Single Sideband Digital Filtered Multiple Access-Passive Optical Network Systems

Gong Xiaoxue et al.

Summary: A single sideband direct detection digital filtered multiple access-passive optical network (DFMA-PON) system is proposed to suppress the frequency selective fading effect caused by fiber dispersion. The KK algorithm is designed to eliminate signal-signal beat interference (SSBI) and improve receiver sensitivity.

ACTA OPTICA SINICA (2022)

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Review Engineering, Electrical & Electronic

Survey of Field-Signal Recovery Technique in Direct-Detection Optical Fiber Communication System

Sun Mengfan et al.

Summary: This study introduces three commonly used field-signal recovery techniques (Stokes vector receiver, carrier-assisted differential detection receiver, and Kramers-Kronig receiver) in direct-detection optical fiber communication systems. The advantages of KK receiver technology are highlighted compared to the other two techniques. The important position of KK receiver in future optical fiber communication systems is clarified, along with analysis of key technical challenges.

LASER & OPTOELECTRONICS PROGRESS (2022)

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Article Optics

Compressive sensing chaotic encryption algorithms for OFDM-PON data transmission

Tingwei Wu et al.

Summary: In this paper, a chaotic compressive sensing encryption algorithm is proposed for OFDM-PON systems to enhance data transmission security by constructing sparsity of transmitted data. The use of 2D-LSCM to generate pseudo-random numbers and four transform formats to achieve data sparsity, as well as four approximation algorithms to optimize compression performance, are introduced.

OPTICS EXPRESS (2021)

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Article Engineering, Electrical & Electronic

Security Issues and Possible Solutions of Future-Oriented Optical Access Networks for 5G and Beyond

Xiaoxue Gong et al.

Summary: This article addresses the security challenges faced by optical access networks and presents existing solutions, focusing on security enhancement schemes based on optical signal processing techniques. The feasibility and effectiveness of these proposed solutions have been verified through numerical simulations.

IEEE COMMUNICATIONS MAGAZINE (2021)

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Article Engineering, Electrical & Electronic

Enhancing the Reliability and Security of OFDM-PON Using Modified Lorenz Chaos Based on the Linear Properties of FFT

Jiajia Shen et al.

Summary: This paper proposes a technique for enhancing the reliability and security of OFDM-PON based on modified Lorenz chaos, which is experimentally verified to improve system security and PAPR performance.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2021)

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Article Optics

Flip-OFDM Based on Hartley Transform for Optical Wireless Communications

Li Lujiao et al.

Summary: A novel optical OFDM scheme based on fast Hartley transform was proposed in this paper, which allows even subcarriers to carry information symbols by flipping the negative part of the real bipolar signal, suitable for optical wireless communication systems. The Flip-FHT system achieves twice the spectral efficiency and 1/50 computational complexity at the receiver compared to ACO-OFDM system. Simulation results show that it outperforms ACO-OFDM under BPSK and 4PAM modulation with simpler system and smaller constellation size.

ACTA OPTICA SINICA (2021)

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Article Engineering, Electrical & Electronic