Gain-clamped fibre amplifier using an ASE end reflector

Gain clamped L‐band EDFA using a fiber Bragg grating in two stage configuration

“…Gain clamping and control of EDFAs in DWDM networks are necessary for stabilizing the channel-gain constant, in order to overcome the power transient effect and saturation detection of the surviving channels in the presence of dynamic input power variation or add/drop of optical channels. Gain clamping techniques have been extensively explored for C-band EDFA [3][4], but there is still a lack of research effort for L-band EDFA.…”