Polarization Maintaining Fiber (PMF) is a type of optical fiber used in optoelectronics that is designed to maintain the polarization of light signals. It is made of a birefringent material, which has two different refractive indices for light travelling in different directions. This allows the fiber to maintain the polarization of light signals, even when the fiber is bent or twisted. PMF is used in a variety of applications, such as telecommunications, sensing, and laser systems. It is also used in fiber-optic gyroscopes, which measure angular velocity and orientation. PMF is becoming increasingly popular in optoelectronics due to its ability to maintain the polarization of light signals. This makes it ideal for applications that require high-precision measurements, such as in fiber-optic gyroscopes. Some companies in the PMF market include Corning, OFS, Sumitomo Electric, and Fujikura. Show Less Read more
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