Digital optical transmitter for digitized narrowcast signals

A method comprising:

• receiving and converting an optical analog-modulated signal comprising one or more up-converted analog RF signals to a first RF electrical analog signal;
• receiving and converting from a digital domain to an analog domain an optical digitally-modulated signal comprising one or more digital signals to a second RF electrical analog signal, the one or more digital signals each comprising a stream of binary digital bits;
• and
• combining the first RF electrical analog signal and the second RF electrical analog signal.

A fiber node comprising:

• means for receiving and converting an optical analog-modulated signal comprising one or more up-converted analog RF signals to a first RF electrical analog signal;
• means for receiving and converting from a digital domain to an analog domain an optical digitally-modulated signal comprising one or more digital signals to a second RF electrical analog signal, the one or more digital signals each comprising a stream of binary digital bits;
• and
• means for combining the first RF electrical analog signal and the second RF electrical analog signal.