Transmission of Microwave Signals beyond the Modal Bandwidth of Multimode Fiber Links

Abstract

Employing the optical frequency multiplication method, we present an experimental performance analysis of the generation of microwave carriers up to 40GHz and their transmission over a 4.4km multimode fiber link. Also, 16QAM and 64QAM radio signals up to 2OMS/s symbol rate are recovered successfully in the 24-30GHz band after 4.4km multimode fiber transmission, complying with the transmitter constellation error requirements of wireless standard IEEE 802.11a.

Radio-over-fiber techniques for advanced in-building networks

“…Moreover, the signal withstands dispersion effectively, both the modal dispersion in multimode fiber and the chromatic dispersion in single-mode fiber. We have shown the successful transmission of 16-QAM and 64-QAM signals up to 120 Mbit/s in the 24-30GHz band over 4.4 km of silica 50µm core diameter graded-index fiber [3]. By using up to 10 subcarriers, we transported 210 Mbit/s 64-QAM over the same link [4].…”