Polarization Maintaining
Polarization-maintaining (PM) fiber devices preserve the linear polarization state of light through the optical path — a requirement for coherent transceivers, fiber-optic gyroscopes, quantum-key-distribution links, and high-end interferometric sensors. The device construction (Panda or Bow-Tie stress-rod fibers, with the slow axis aligned through every splice) maintains a polarization extinction ratio > 20 dB end-to-end. Optiunik supplies PM PLC splitters in 1×2, 1×4, 1×8, and 2×8 ratios; PM dense-WDM filter couplers for 1310 / 1550 nm coherent links; and PM in-line optical isolators with > 30 dB isolation for protecting laser sources from back-reflection. Operating wavelengths cover 980 / 1064 / 1310 / 1480 / 1550 nm. Every unit is shipped with a PM extinction-ratio measurement and an axis-orientation map.
3 products
Polarization Maintaining Isolator 1310/1550nm
In-line PM optical isolator with > 30 dB isolation for protecting PM laser sources from back-reflection.
Polarization Maintaining Dense WDM
Polarization-maintaining DWDM filter coupler for 1310/1550 nm and ITU-grid channels, used in coherent transceivers and PM sensor links.
Polarization Maintaining PLC Splitter
PM PLC splitter preserving polarization state across 1×2 / 1×4 / 1×8 / 2×8 split ratios for coherent and quantum-grade optical paths.