Non-Orthogonal Optical Overlapped Time Multiplexing System for Intensity Modulation Direct Detection

doi:10.13190/j.jbupt.2021-263

Journal of Beijing University of Posts and Telecommunications ›› 2022, Vol. 45 ›› Issue (3): 81-85.doi: 10.13190/j.jbupt.2021-263

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Non-Orthogonal Optical Overlapped Time Multiplexing System for Intensity Modulation Direct Detection

LIU Jinquan¹, LIU Haidan¹, WANG Junjian², WANG Daobin³, GAO Guanjun¹

1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876,China;
2. Infrastructure Construction Company Limited, China Xiongan Group, Baoding 071700, China;
3. School of Science, Lanzhou University of Technology, Lanzhou 730050, China

Received:2021-11-19 Online:2022-06-28 Published:2022-06-01

Abstract

Abstract: Overlapped time domain multiplexing is one of the most efficient manners to improve the communication system spectral efficiency and performance. A non-orthogonal optical overlapped time domain multiplexing system based on intensity modulation and direct detection is designed, and is demonstrated experimentally. The performance of non-orthogonal optical overlapped time division multiplexing system is compared with pulse amplitude modulation system that has the same bitrate with the proposed system. Experimental results show that when compared to the signals modulated by 4, 8 and 16 pulse amplitude modulation, the minimum receiver optical power of the signals modulated by the proposed system with rectangular pulse shaping of two, three and four fold overlapping are reduced by 2.5, 4.5 and 8.5dB, respectively, when satistying the hard detection-forward error correction threshold limit.

Key words: non-orthogonal optical overlapped time domain multiplexing, intensity modulation direct detection, pulse amplitude modulation

CLC Number:

TN913.7

LIU Jinquan, LIU Haidan, WANG Junjian, WANG Daobin, GAO Guanjun. Non-Orthogonal Optical Overlapped Time Multiplexing System for Intensity Modulation Direct Detection[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(3): 81-85.

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Non-Orthogonal Optical Overlapped Time Multiplexing System for Intensity Modulation Direct Detection

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