SNR enhancement receiver based on dual-comb microwave photonic channelization

Jianghua Zhang; Tian Jiang; Xin Zhang; Yumin Luo; Jie Yang; Xin Zheng; Ke Yin

doi:10.1117/12.2550132

20 December 2019 SNR enhancement receiver based on dual-comb microwave photonic channelization

Jianghua Zhang, Tian Jiang, Xin Zhang, Yumin Luo, Jie Yang, Xin Zheng, Ke Yin

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112095C (2019) https://doi.org/10.1117/12.2550132
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

Signal to noise ratio (SNR) is one of the key parameters in the communication, radar and spectrum perception systems. In this paper, we propose and demonstrate a SNR enhancement receiver with wide processing bandwidth and tunability, where two coherent optical frequency combs (OFCs) based on multi-channel microwave source and electro-optic modulators are incorporated to accomplish simultaneous frequency down-conversion and channelization. By exploiting a dual frequency microwave source as a comb driver, the FSR tunable OFC is demonstrated. The FSR of the laser can be tuned flexibly from 8 GHz to 12 GHz by controlling the controlling the frequency of the microwave source. Multifrequency microwave signal is generated from a 0-10GHz microwave signal source and cloned to the optical domain by a carrier suppressed single sideband modulator (CS-SS) and then down-converted and channelized to the same IF. The IF signals are digitalized and then added in the digital domain. With the proposed receiver a 7.2 dB SNR enhancement has been achieved.

Citation Download Citation

Jianghua Zhang, Tian Jiang, Xin Zhang, Yumin Luo, Jie Yang, Xin Zheng, and Ke Yin "SNR enhancement receiver based on dual-comb microwave photonic channelization", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112095C (20 December 2019); https://doi.org/10.1117/12.2550132

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