Fiber-optical cable television system performance improvement employing light injection and optoelectronic feedback techniques

A split-band directly modulated fiber-optical cable television system employing light injection and optoelectronic feedback techniques is proposed and demonstrated. The light injection technique enhances the laser resonance frequency, and the optoelectronic feedback technique further enhances it, leading to an improvement in the systems´ overall performances. Good performances of carrier-to-noise ratio, composite second order, and composite triple beat were achieved for the full channel band over a 100-km single-mode fiber transport