Answers are grounded in this paper and cite their sources.
Highly reliable distributed feedback (DFB) laser diodes operating at 1.5-μm wavelength range are fabricated through optimizing the device parameters. Thickness control of the active layer is found to be an essential factor in achieving low threshold operation of DFB lasers. The threshold current as low as 11 mA and stable single longitudinal mode CW operation up to 106°C is achieved with these DFB lasers.
No takes yet. Share an insight, caveat, or question.
Tsuji et al. (1987) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: