The gain medium of Distributed Raman Amplifier is Single Mode Fiber (SMF) of at least 25km in length. 50 km works better. That is to say, the signal is amplified all along the transmission fiber. In OSNR calculation, the Equivalent Noise Figure of distributed backward pump Raman Amplifier is 0dB, and typical value may be as low -2dB, which improves system OSNR and transmission distance. By lowering the amount of light at the input of the fiber non-linearity effect (SBS) is decreased .A typical application you would input 13 dB into your transmission fiber and go 60 km where the signal would be 0dBm at the input of the Ramon amplifier when it was turned off. When the Ramon was turned on the effective signal at the input would increase to 8 dB providing more than adequate light to drive a EDFA for distribution or to extend another 60 km.4Cable TV’s distributed Raman Amplifier is a series of products, with different Raman Gain and Gain bandwidth to meet differential needs. The unit adopts Japanese Fitel Raman pump laser, build-in laser APC, AGC, ATC closed-looped circuit ensuring long life and stable operation of the pump laser.
Perfect laser APC, AGC, ATC closed-looped circuit ensuring long life and stable operation of the pump laser.Low noise figure and flat gain.Adopts famous Fitel Raman pump laser.Different Gain bandwidth option:
RFA7000: C & L-Band.
Differential gain suits for different network.
Fiber CATV system, super-long trunk inconvenient for building relay station.
Relay distance > 60Km.
Single span distance > 80Km.
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.