Gain-clamped erbium-doped waveguide amplifier module with fiber Bragg grating using optical feedback

Abstract

A gain-clamped C-band EDWA module using forward optical feedback with a fiber Bragg grating (FBG) over the operating range of 1530 to 1560nm has been experimentally investigated and demonstrated. A 0.3dB minimum gain variation is observed at 1550nm over a 10dBm variation of the input signal power. In addition, the gain clamping behaviors have also been experimentally investigated under different operating conditions.