We analysed longitudinal mode selectivity above threshold for asymmetric mirror structure DFB lasers which have a low front facet reflectivity by taking spatial hole burning into account. As a result we found that single longitudinal mode (SLM) operation yield cannot be improved by an introduction of front facet reflectivity for KL of 0.75. There was no strong KL dependence of the SLM operation yield for a low-noise DFB laser with a front facet reflectivity of 0.05.
No takes yet. Share an insight, caveat, or question.
Soda et al. (1988) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: