Distributed Feedback Laser (DFB) for Signal Power Amplitude Level Improvement in Long Spectral Band

This study outlines the distributed feedback laser for signal power amplitude level improvement in the long spectral band of 1550? nm wavelength within supporting pumped wavelength of 1480? nm. The bias and modulation peak currents based distributed feedback laser are varied in order to test the signal power level, peak signal amplitude variations after the fiber-optic channel and light detectors. The signal power level, peak signal amplitude is measured against spectral wavelength and time bit period variations. The study emphasis the signal power level, peak signal amplitude are enhanced for the best selection values of both a bias current at 45? mA and modulation peak current at 0.5? mA.