DFB lasers and DBR lasers share many of the same characteristics of narrow linewidth and tunability. Whereas the DBR is fabricated on single growth epi, the DFB requires that the grating be buried under a high index layer, epitaxially regrown over the grating, inorder to form the waveguide. This fabrication difference leads to critical distinctions between the operational characteristics of these two architectures.


Разработка: студия Green Art