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In recent years, we've been introduced to various advanced lasers that have been developed to address the growing demand for communication. The DFB laser is one such name on the list. DFB Lasers produce a single-mode output and are much more stable than Fabry-Perot Lasers and Distributed Bragg Reflector Lasers. A diffraction grating placed along the active region of the chip can accomplish this. Distributed feedback lasers are commonly used as a light source for metro, long-distance, and underwater applications due to their narrow spectral width and wavelength stability. In this blog, we'll look at how distributed feedback lasers work and how important they are. But first, let us define the DFB laser and its various types. What Is DFB Laser and What Are Its Different Types? A DFB laser is a narrow linewidth laser diode or optical fiber laser in which the grating occurs throughout the cavity rather than just at the two ends. The diode's structure creates a one-dime...

The 21st century is an era of technological revolution. We have witnessed a major technological paradigm shift in almost every sector, including manufacturing, customer service, education, and so on. During this time, we were introduced to cutting-edge technologies in the medical field as well. Some of the most widely used and advanced imaging technologies are TD-OCT (Time-Domain Optical Coherence Tomography), SD-OCT (Spectral-Domain Optical Coherence Tomography), and Swept source OCT–a type of laser incorporated in the device. In this blog, we will discuss the swept source laser, its principles, and its applications, among other things. Let's start with what swept source-OCT is in a nutshell. What is a Swept Source Laser? Swept source OCT, also known as SS-OCT, is an ophthalmic imaging technology used to diagnose and treat various eye diseases. It is a non-invasive method for cross-sectional imaging of internal retinal structures that employ low coherence interferometry ...