Characteristics of DFB Laser for Optical Fiber Communication System

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 Rapid and reliable communication technologies are becoming increasingly necessary. Since the world is rapidly transitioning to digital platforms, there is an increased demand for communication tools and solutions.

This has resulted in the development of communication systems that are quick, sophisticated, and reliable. However, the development of these systems is heavily reliant on their components, such as DFB lasers.

In this article, we will look at the characteristics of distributed lasers, also known as DFB lasers, and why they have been a popular choice for telecommunication systems in recent years.

Characteristics of DFB Laser

Characteristics of Distributed Feedback Laser :

Some of the primary characteristics of DFB laser that make it a favored choice for fiber communication systems are listed below.

1. For a long time, Fabry Perot (FP) lasers were used as a light source for fiber communication. However, these lasers were effective for short-distance transmission only. Because when it comes to long-distance transmission, FP lasers have severe issues. The solution to all of these limitations was the DFB laser.

2. In the case of a DFB laser, the Bragg grating is placed in the laser cavity of the FP laser. For the unknown, it is nothing more than the periodic variation in the reflective index of the gain zone throughout its length.

3. Moreover, DFB lasers are frequently designed with a “Quantum Well” structure. The light source behaves as a particle rather than a wave when it is trapped in a cavity smaller than the wavelength.

If you want to know more details about DFB laser and its Characteristics, check our blog: DFB Laser for Optical Fiber Communication System

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