Direct modulation will lead to high laser chirp (Laser’s bias current is modulated by signal and the optical spectrum FM’s). Laser chip will interact with dispersion effect caused by standard single mode fiber (SMF-28), which will generate serious CSO distortion . This distortion will become more serious with the increase of transmission distance, bandwidth and channel number.
Today we can maintain acceptable signal quality while transmitting an analog and digital full channel signal with transmission distance≤15Km or transmitting digital load with transmission distance≤40Km.
NEW PHONE NUMBER 843-438-4334
4Cable TV’s revolutionary PowerMiserTM amplifier line reduces the power requirements for most amplifier types by 50% or more. A PowerMiserTM amplifier can reduce Carbon Emissions by as much as 261 pounds per amplifier per year! That reduction multiplied by the million plus amplifiers in service would make a significant contribution to the health of our planet!
The two Founders of 4 Cable TV have over 90 years of combined experience in Cable TV. Between the two of them they have built thousands of miles of plant and have engineered and overseen thousands of successful amplifier module upgrades.