Lasers, Fiber Optics, and Communications

Full-duplex fiber-wireless link for alternative wired and 40-GHz band wireless access based on differential quaternary phase-shift optical single sideband millimeter-wave signal

[+] Author Affiliations
Ruijiao Zhang

Beijing University of Posts and Telecommunications, School of Electronic Engineering, State Key Laboratory of Information Photonics and Optical Communications, Xitucheng Road #10, Haidian District, Beijing 100876, China

Jianxin Ma

Beijing University of Posts and Telecommunications, School of Electronic Engineering, State Key Laboratory of Information Photonics and Optical Communications, Xitucheng Road #10, Haidian District, Beijing 100876, China

Xiangjun Xin

Beijing University of Posts and Telecommunications, School of Electronic Engineering, State Key Laboratory of Information Photonics and Optical Communications, Xitucheng Road #10, Haidian District, Beijing 100876, China

Opt. Eng. 54(2), 026101 (Feb 04, 2015). doi:10.1117/1.OE.54.2.026101
History: Received October 9, 2014; Accepted January 5, 2015
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Abstract.  A full-duplex fiber-wireless link with a uniform single sideband differential quaternary phase-shift keying optical millimeter-wave signal is proposed to provide wired or 40-GHz band wireless access alternatively. The uniform optical millimeter-wave signal that supports services for wired or wireless users is produced via an LiNbO3 Mach-Zehnder modulator. After being transmitted to the hybrid optical network unit (HONU), it can be demodulated in different patterns on the demand of the user terminals for wired or wireless access. Simultaneously, part of the blank optical carrier abstracted from it is reused as the uplink optical carrier, so the HONU is free from the laser source, and thus, the complexity and cost of the system are reduced. Moreover, since the two tones of the dual-tone optical millimeter wave come from the same source, they maintain high coherency even after being transmitted over fiber. Additionally, the downlink data are carried by one tone of the dual-tone optical millimeter wave, so the downlink optical millimeter-wave signal suffers little from the fiber chromatic dispersion and laser phase noise. The theoretical analysis and simulation results show that our proposed full-duplex link for alternative wired and wireless access maintains good performance even when the transmission link with standard single mode fiber is extended to 30 km.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ruijiao Zhang ; Jianxin Ma and Xiangjun Xin
"Full-duplex fiber-wireless link for alternative wired and 40-GHz band wireless access based on differential quaternary phase-shift optical single sideband millimeter-wave signal", Opt. Eng. 54(2), 026101 (Feb 04, 2015). ; http://dx.doi.org/10.1117/1.OE.54.2.026101


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