We report on the measurement of the small signal gain and index variation of a GaInAsP semiconductor optical amplifier as a function of the injected current in the wavelength range 1.53–1.58 μm. Employing interferometry to evaluate the index changes, we have determined that the linewidth enhancement factor varies from 9 to 4 for photon energies ranging from below to above the band gap, respectively.
No takes yet. Share an insight, caveat, or question.
Ehrhart et al. (1991) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: