1 Department of Photonics Engineering, Technical University of Denmark2 Coding and Visual Communication, Department of Photonics Engineering, Technical University of Denmark3 Metro-Access and Short Range Systems, Department of Photonics Engineering, Technical University of Denmark4 High-Speed Optical Communication, Department of Photonics Engineering, Technical University of Denmark5 Universidad Politecnica de Valencia6 Technical University of Denmark7 Huazhong University of Science and Technology8 Universidad Politecnica de Valencia9 Huazhong University of Science and Technology
The photonic generation of electrical orthogonal frequency-division multiplexing (OFDM) modulated wireless signals in the 75−110 GHz band is experimentally demonstrated employing in-phase/quadrature electrooptical modulation and optical heterodyn upconversion. The wireless transmission of 16-quadrature-amplitude-modulation OFDM signals is demonstrated with a bit error rate performance within the forward error correction limits. Signals of 19.1 Gb/s in 6.3-GHz bandwidth are transmitted over up to 1.3-m wireless distance. Optical comb generation is further employed to support different channels, allowing the cost and energy efficiency of the system to be increased and supporting different users in the system. Four channels at 9.6 Gb/s/ch in 14.4-GHz bandwidth are generated and transmitted over up to 1.3-m wireless distance. The transmission of a 9.6-Gb/s single-channel signal occupying 3.2-GHz bandwidth over 22.8 km of standard single-mode fiber and 0.6 m of wireless distance is also demonstrated in the multiband system.
I E E E Photonics Journal, 2012, Vol 4, Issue 5, p. 2027-2036
Microwave photonics signal processing; Frequency combs; Heterodyning; Fiber optics systems; Orthogonal frequency division multiplexing