Principal Characteristics of DFB Laser - Inphenix Inc.

https://www.inphenix.com/en/everything-you-need-to-know-about-dfb-lasers/

DFB Laser is an edge-emitting semiconductor light source, which is more stable and generates a clean single-mode output. It offers smooth and tunable control of the wavelength, low-noise, and narrow spectral width, making it a cost-effective, ideal narrow linewidth laser for fiber optic communication and sensing applications.

#DFBlasers are used to generate a signal with a single frequency. It offers distraction grating above the active region. It provides a higher modulation speed up to 15Gbps. DFB lasers are less susceptible to temperature variations. So, the periodic variation of the refractive index is obtained using a diffraction grating. Except for the single-mode, all other modes are suppressed by oscillators near the Bragg wavelength.