![]() 2 for a schematic diagram of the process.) The deposited material will form the core region of the optical fiber( see Fig. As the burner traverses over the deposited soot, the heat transforms these solid white particles into pure, transparent glass, in a process called vitrification. Once the soot is formed, it is deposited on the inner wall of the tube. As the gasses flow inside the tube, they react to the heat by forming solid submicron particles, called "soot," in the vicinity of the heat zone. The pure silica tube is mounted on a lathe equipped with a special heat torch. In the Modified Chemical Vapor Deposition (MCVD) process, the highly controlled mixture of chemicals described above is passed through the inside of a rotating glass tube made of pure synthetic SiO2. There are several methods used to manufacture preforms. Also, the core composition and the refractive index of graded-index multimode fibers changes across the core of the fiber to give the refractive index a parabolic shape. Multimode fibers typically have a much higher refractive index, and therefore much higher germania content. Single-mode fibers typically have only small amounts of germania and have a uniform composition within the core. The core composition of all standard communication fibers consists primarily of silica, with varying amounts of germania added to increase the fiber's refractive index to the desired level. GeCl4 (gas) + O2 > GeO2 (solid) + 2Cl2 (in the presence of heat) SiCl4 (gas) + O2 > SiO2 (solid) + 2Cl2 (in the presence of heat) The basic chemical reaction of manufacturing optical glass is: These chemicals are used in varying proportions to fabricate the core regions for the different types of preforms. Ultra-pure chemicals - primarily silicon tetrachloride (SiCl4) and germanium tetrachloride (GeCl4) - are converted into glass during preform manufacturing. The first step in manufacturing glass optical fibers is to make a solid glass rod, known as a preform. manufacturing of the pure glass preform and 2. There are two main steps in the process of converting raw materials into optical fiber ready to be shipped:ġ. Using a graded index core, where layers of light have lower index of refraction as you go further from the center of the core, minimizes dispersion but complicates the manufacturing process. ![]() With its relatively large core, multimode fiber suffers more dispersion than singlemode. Therefore, multimode fiber propagates more than one mode of light. Multimode fiber has a large core diameter compared to the wavelength of the transmitted light 50 or 62.5 microns. The small core size limits the transmitted light in the fiber to only one principle mode, which minimizes dispersion of light pulses, increasing the distance the signal can be sent. Single-mode fiber has a smaller core - only 9 microns in diameter - and only 6 times the wavelength of light it transmits. Both types of fiber are composed of only two basic concentric glass structures: the core, which carries the light signals, and the cladding, which traps the light in the core (Fig. Some basic facts about how optical fiber is manufactured may help to provide a better understanding of how optical fiber works too.Īs you know, there are two main types of optical fiber: single-mode and multimode. It's certainly not obvious how something only 1/8 of a mm - 0.005 inches - in diameter can be made with such precison. Kindly share your thoughts with us, let’s see what we can do together.The Fiber Optic Association - Tech Topics Over the years we have also implemented a number of customized solutions for individual needs of our customer. We continue to bring new processes and equipment to the industry. Optogear is well connected with manufacturing industry and global research community. The design is robust, industrial and elegant, ready to work for generations. The equipment is designed for the process, to serve the process. The heart of Optogear offering is in world class scientific work. Our offering covers whole range from preform manufacturing to fiber draw, from non-traditional fiber coating technologies to state of art fiber handling equipment. Optogear has addressed this need and developed interesting product portfolio since the year 2008. Recent scientific findings have opened possibility for new processes, for which equipment has not traditionally been available. Modern specialty fibers are key components in optical lasers and amplifiers, in medical optical applications and in demanding sensor applications in various industries. ![]() Specialty optical fiber manufacturing equipment is the core of Optogear offering. Optogear provides equipment and technology for manufacturing of optical fibers used in modern photonics industry.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |