Simultaneous transmission of 2.5-Gb/s baseband and 5.8-GHz-band radio frequency signals on a single wavelength using optical diplexer and mixed-signal multiplexer

Simultaneous transmission of 2.5-Gb/s baseband and 5.8-GHz-band radio frequency (RF) signals on a single wavelength via a fiber link is successfully demonstrated using the optical diplexer and the newly designed novel baseband/RF mixed-signal multiplexer (MUX) with no mixer. The bit error rate (BER) < 10(-12) of the baseband signal is maintained when the RF input power is less than -14 dBm after 10-km-long distance transmission. The maximum carrier-to-noise ratio (CNR) of the RF signal is measured as 23 dB with no additional amplifier. The measured insertion loss for the RF signal of the mixed-signal MUX is 1.2 dB at 5.8 GHz, and the isolations between the two bands are about 20 dB for the baseband and 30 dB for the RF band, respectively. (c) 2008 Society of Photo-Optical Instrumentation Engineers.