We experimentally investigate the transmission performance of 60-GHz signals over standard single-mode fiber (SSMF) and wireless links at different bit rates. Experimental results show that in a transmission of over 10-km SSMF and 1.3-m wireless link, bit rate reaches up to 5 Gb/s and bit error rate (BER) is less than 10^{-4}. The main limiting factor in such radio-over-fiber (ROF) systems is intersymbol interferences caused by the so-called walk-off effect when BER is below 10^{-8}. In addition, a transmission of over 20-km SSMF without chromatic dispersion compensation is brie°y investigated. For a BER of 10?8, the optical penalty is 2 dB.