I have suffered from optical power fluctuation in my fiber system. What is likely the cause?
The most common cause of optical power or frequency jitter is high reflection or back scattering, which is often referred to as low return loss. A laser is essentially an optical oscillator with a fixed oscillation frequency (wavelength). Optical reflection or back scattering tent to push or pull the optical frequency around its natural position. In turn optical power would fluctuate according to the laser gain profile. The best solution is to replace your current FORJ with a high performance unit and replace all your current ST connectors with FC/APC connectors.
