Research on the light source of 60GHz millimeter wave ROF system

A novel light source is proposed and applied in a 60 GHz millimeter wave Radio-over-Fiber (ROF) system. The Fabry-Perot semiconductor laser diode ( F-P SLD) which shows a multimode output can be converted to a single-mode laser source by employing a F-P SLD locked to the externally injected narrow-band amplified spontaneous emission (ASE). We successfully apply this source in the BS (base station) of 60 GHz millimeter wave ROF system