Spectral characteristics for 1.3μm monolithic external cavity (MEC) DFB lasers have been studied experimentally. As drive current increased, light output and spectral linewidth were changed periodically. Less than 2 MHz linewidths were obtained at the minimum points of each period. The narrowest beat spectrum linewidth was less than 3MHz with two MEC DFB lasers.
No takes yet. Share an insight, caveat, or question.
Murata et al. (1986) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: