Polarization Maintaining Fiber Patch Assemblies

Polarization-maintaining (PM) fibers are optical fibers that preserve the polarization state of light. PM fibers contain stress elements along their length that create two orthogonal axes with different indices of refraction. These, in turn, give rise to birefringence, which creates well-defined polarization axes that are maintained along the fiber length.

The connectors on PM fiber patch assemblies need to be precisely aligned to the stress elements of the fiber so that when two fibers are mated, the polarization axes are aligned. Care must also be taken to minimize mechanical stresses that might upset the fiber’s birefringence.

Berkshire Photonics offers its 53XX series of PM fiber patch assemblies (“jumpers”) in standard configurations and lengths as shown below. Each assembly is delivered with insertion loss and extinction ratio measurement results.

Most assemblies we make are to customer specifications. We use high-quality fiber, connectors, protective sheathing options, etc. from reputable manufacturers, and follow well-documented, continuously-monitored production processes so that every assembly we deliver meets the highest standards of reliability and dependability.

Contact us today and talk to us about the custom cable assemblies you require. We’ll work with you to quickly identify the best solution, and build them to your exact specifications.