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DFB Lasers are available at wavelengths from 640nm to 14,000nm. The most common wavelengths include 1064nm, 1310nm, and 1550nm. The 1064nm devices are commonly used as seed sources in fiber lasers, while the 1310/1550nm devices are used in many telecommunications applications. Other common applications for include gas sensing and LiDAR. These lasers are typically offered in fiber coupled butterfly packages or TO-can packages.

What is a DFB Laser? This acronym stands for Distributed Feedback Laser; these types of laser diodes have a grating in the active region of the semiconductor. Their primary advantage is a relatively narrow single peak (single mode) gaussian waveform. A technical introduction to these devices can be found in the following article which was writted by Dr. Matthias Pospiech and Sha Liu. This article provides an in depth technical understanding of the structure and key properties of DFB lasers ».