Title :
Power penalty due to optical reflections in erbium-doped fiber preamplifier
Author :
Kobayashi, M. ; Ishihara, T. ; Gotoh, M.
Author_Institution :
Hitachi Cable Ltd., Ibaraki, Japan
Abstract :
The effect of optical reflections in erbium-doped fiber amplifiers (EDFAs) is investigated primarily as they are used for preamplifying the received signal in a digital transmission system. Both an increase in amplified spontaneous emission (ASE) due to its multiple reflection and an increase in relative noise intensity (RIN) due to interferometric phase-to-intensity-noise conversion are considered as sources of degradation of the receiver sensitivity. The power penalty is calculated and confirmed experimentally.<>
Keywords :
erbium; fibre lasers; light interferometry; noise; reflectivity; sensitivity; superradiance; EDFAs; amplified spontaneous emission; digital transmission system; erbium-doped fiber preamplifier; interferometric phase-to-intensity-noise conversion; multiple reflection; optical reflections; power penalty; receiver sensitivity; relative noise intensity; Acoustic reflection; Degradation; Erbium-doped fiber amplifier; Light sources; Optical interferometry; Optical noise; Optical reflection; Phase noise; Preamplifiers; Spontaneous emission;
Journal_Title :
Photonics Technology Letters, IEEE
