Centralized optical-frequency-comb-based RF carrier generator for DWDM fiber-wireless access systems

• Published in: Journal of optical communications and networking 2014-01, Vol.6 (1), p.1-4
• Main Authors: Xiaodan Pang, Beltran, Marta, Sanchez, Jose, Pellicer, Eloy, Olmos, J. J. Vegas, Llorente, Roberto, Tafur Monroy, Idelfonso
• Format: Article
• Language: English
• Subjects: Bands; Channels; Dense wavelength division multiplexing; End users; High speed; Millimeter-wave; Networks; Optical fibers; Optical filters; Optical frequency; Optical frequency comb; Optical mixing; Radio frequencies; Radio frequency; Radio over fiber; Radio over fiberDense wavelength division multiplexing; Wavelength division multiplexing; Wireless communication; Wireless communications; Wireless networks
• ISSN: 1943-0620; 1943-0639; 1943-0639
• DOI: 10.1364/JOCN.6.000001

In this paper, we report on a gigabit capacity fiber-wireless system that enables smooth integration between high-speed wireless networks and dense wavelength-division-multiplexing (DWDM) access networks. By employing a centralized optical frequency comb, both the wireline and the wireless services for each DWDM user can be simultaneously supported. Besides, each baseband channel can be transparently upconverted tomultiple radio-frequency (RF) bands for different wireless standards, which can be flexibly filtered at the end user to select the on-demand RF band, depending on the wireless applications. For demonstration, we transmit a 2.5 Gbit/s signal through the proposed system and successfully achieve a bit-error-rate (BER) performance well below the 7% overhead forward error correction limit of the BER of 2 × 10 -3 for both the wireline and the wireless signals in the 60 GHz band after 25 km single-mode fiber plus up to 6 m wireless distance.