Explained: Working of FP Laser
https://www.inphenix.com/en/ho....w-does-fp-laser-work
The Fabry Perot– FP laser, also known as the Fabry Perot Interferometer (FPI), is a type of laser that is widely used in the telecommunications industry, astronomy, and other fields. This laser’s primary application is for low-data-rate short-distance transmission over distances of up to 20 kilometers.
It should be noted that the #fplaser is a more advanced version or substitute for the DFB (Distributed Feedback) laser.
The spectrum width is the fundamental distinction between DFB and Fabry Perot lasers. On the one hand, the #fabryperotlaser has a wide spectrum width and is a multi-longitudinal mode laser, whereas the DFB laser has a narrow spectrum width and is a single longitudinal mode laser.