Multi-band impulse filtered UWB signal transmission by wideband optical VCSEL transmitter

This paper introduces a novel approach for transmitting UWB signals over optical fibre with cost effective Vertical-cavity surface-emitting laser (VCSEL). The transmitted impulse compile with the strict European frequency plan (ECC). A prototype filter is presented with lumped elements which has a -40 dB/500 MHz cut off at the critical 3.1 GHz band. Also a novel impedance matching method is presented for matching low cost 850 nm multi-mode VCSEL in the lower UWB band. Time-domain transmission measurements are presented with the fabricated devices that show this approach is acceptable for low cost remote antenna connection for UWB applications.