Answers are grounded in this paper and cite their sources.
1.54-μm wavelength phase-adjusted InGaAsP/InP distributed feedback lasers with low threshold and almost symmetrical subthreshold spectra are demonstrated. Antireflecting window structures were formed by a novel mass transport technique over a length of 25 μm. The phase adjustment was accomplished by a groove in the substrate. Asymmetric output characteristics due to displacement of the groove from the cavity center were observed in agreement with theory.
No takes yet. Share an insight, caveat, or question.
Broberg et al. (1985) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: