Title :
Bidirectional radio-over-fiber link employing optical frequency multiplication
Author :
Larrodé, M. García ; Koonen, A.M.J. ; Olmos, J. J Vegas ; Ng´oma, A.
Author_Institution :
COBRA Res. Inst., Eindhoven Univ. of Technol., Netherlands
Abstract :
We propose a bidirectional radio-over-fiber link consisting of an optical downlink transmission employing the optical frequency multiplication principle, a remote local oscillator (LO) generation, a remote down-conversion of the radio-frequency uplink signals, and an optical uplink transmission employing intensity modulation-direct detection. Experiments demonstrate the optical up-conversion of 64-level quadrature amplitude modulated radio signals to 17.8 GHz after transmission over 4.4 km of multimode fiber, 12.5 and 25 km of single-mode fiber in the downlink; the uplink performance is evaluated in terms of down-conversion loss employing the optically generated LO.
Keywords :
microwave photonics; optical fibre communication; optical frequency conversion; optical modulation; quadrature amplitude modulation; 12.5 km; 17.8 GHz; 25 km; 4.4 km; bidirectional radio-over-fiber link; downconversion loss; downlink; intensity modulation-direct detection; multimode fiber transmission; optical downlink transmission; optical frequency multiplication; optical upconversion; optical uplink transmission; quadrature amplitude modulated radio signals; radiofrequency uplink signals; remote downconversion; remote local oscillator generation; single-mode fiber; Amplitude modulation; Downlink; Frequency conversion; Intensity modulation; Local oscillators; Optical modulation; Quadrature amplitude modulation; RF signals; Radio frequency; Signal generators; Broad-band wireless access; optical fiber communications; radio-over-fiber (RoF) systems;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.862011
