Enhanced Vector Signal Transmission Over Double-Sideband Carrier-Suppressed Optical Millimeter-Waves Through a Small LO Feedthrough

We proposed a new vector signal transmission scheme for double-sideband with carrier-suppressed (DSB-CS) radio-over-flber system. The traditional single-stage DSB-CS scheme will induce signal phase distortion, and is therefore not suitable for vector signal delivery. However, by taking the advantage of the intrinsic local oscillator (LO) power feedthrough at a physical mixer, we found the phase information of the received vector signal would be preserved without introducing any hardware complexity to transmitter and receiver system setup. A feasibility demonstration of transmitting tri-band 16QAM-orthogonal frequency-division multiplexing signal carried by a DSB-CS optical mm-wave has been achieved with a received error vector machine value less than 14.8% after 100-km standard single-mode fiber and over 5-m wireless distance. In addition, the optimal value and dynamic range for the LO input power was investigated and experimentally measured.

[1]  Gee-Kung Chang,et al.  Key Technologies of WDM-PON for Future Converged Optical Broadband Access Networks [Invited] , 2009, IEEE/OSA Journal of Optical Communications and Networking.

[2]  Xiaoping Zheng,et al.  A Radio-Over-Fiber Downstream Link Employing Carrier-Suppressed Modulation Scheme to Regenerate and Transmit Vector Signals , 2007, IEEE Photonics Technology Letters.

[3]  A.J. Seeds,et al.  Microwave Photonics , 2006, Journal of Lightwave Technology.

[4]  G. Chang,et al.  A full-duplex radio-over-fiber system based on optical carrier suppression and reuse , 2006, IEEE Photonics Technology Letters.

[5]  A.M.J. Koonen,et al.  Radio-Over-MMF Techniques—Part II: Microwave to Millimeter-Wave Systems , 2008, Journal of Lightwave Technology.

[6]  Xiaoping Zheng,et al.  Vector signal transmission in ROF system employing optical carrier-suppressed modulation scheme , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.