A polarization-maintaining jumper, also known as a PM jumper, is a type of optical fiber jumper that is designed to maintain the polarization state of light as it travels through the fiber. It is commonly used in applications where the preservation of polarization is critical, such as in fiber optic communication systems, interferometers, and laser systems. The PM jumper is typically available in various lengths and connector types to suit different applications. It is important to choose the correct length and connector type to ensure proper polarization alignment and compatibility with the system.
