20 June 2014 Full-duplex radio over fiber system with optimum optical carrier to sideband ratio and wavelength reuse
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Optical Engineering, 53(6), 066106 (2014). doi:10.1117/1.OE.53.6.066106
Abstract
A full-duplex radio over fiber system with optimum optical carrier to sideband ratio (OCSR) of 0 dB and wavelength reuse for uplink are proposed. At the central office, single-sideband modulation with OCSR larger than 0 dB is realized based on optical injection. At the base station, a notch filter with the notch depth corresponding to the OCSR of the transmitted signal is used to achieve the optimum OCSR of 0 dB. The reflected weakly modulated carrier is reused as the carrier for upload signals. A simulation is carried out to verify the proposed system. Results show that the download 60-GHz-RF signal is almost not affected by the fiber chromatic dispersion, and the power penalty after transmission over a 50-km single-mode fiber is negligible in uplink and is only 1.27 dB in downlink.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jintian Xiong, Rong Wang, Tao Pu, Tao Fang, Jilin Zheng, Lin Lu, Peng Xiang, "Full-duplex radio over fiber system with optimum optical carrier to sideband ratio and wavelength reuse," Optical Engineering 53(6), 066106 (20 June 2014). http://dx.doi.org/10.1117/1.OE.53.6.066106
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KEYWORDS
Modulation

Radio optics

Hybrid fiber radio

Single mode fibers

Linear filtering

Signal detection

Single sideband modulation

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