DFB Laser vs. DBR Laser: 4 Major Differences
The late 1990s to the early 2000s telecom revolution prompted laser manufacturers to innovate and design more varieties of lasers to meet the growing demand in telecom applications. One of the best ways to meet the need for low signal lasers is to use distributed feedback lasers (DFB lasers). These lasers have not only contributed to addressing the needs of the telecommunications industry but have also caused the disappearance of DBR lasers (Distributed Bragg Reflectors) from the market. In this post, we'll look at the differences between DFB lasers and DBR lasers. But before that, we will take a quick look at what DFB laser is and what DBR laser is. What Is A DFB Laser? A DFB laser is a type of diode laser that generates resonance and oscillation in the cavity using diffraction gratings rather than mirrors. A distributed feedback (DFB) laser's purpose is to sharpen the output of conventional Fabry-Perot lasers . The substitution of mirrors with grating offers DFB la...