Get to Know All about PM Patch Cables

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You may learn about LC fiber patch cables or MTP/MPO fiber cables while talking about fiber optic patch cables. Apart from these cables, there are some special fiber patch cables, such as Polarization maintaining patch cable and mode conditioning patch cables that have been introduced in the previous article. At first, let me check the basic definition of the PM patch cables. On a high precision, butt-style connection technique is polarization maintaining isolator is based. By using male connectors with a positioning key and a bulkhead female receptacle with a tight tolerance keyway the PM axis orientation is maintained, and hence ensures good repeatability in extinction ratios and insertion losses. Stresses are induced in the fiber when a normal fiber is bent or twisted and the polarization state of light will be changed by the stresses traveling through the fiber. The final output polarization varies with change in temperature or position of the fiber.

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