The 3 Ports 1310nm High Power Polarization Maintaining Optical Circulator is a precision-engineered, non-reciprocal passive optical device designed to transmit light sequentially from Port 1 → Port 2 and Port 2 → Port 3, while maintaining the input polarization state with excellent stability. Operating at 1310 nm, this device ensures low insertion loss, high isolation, high return loss, and a superior polarization extinction ratio (PER), delivering reliable performance in high-power polarization-sensitive optical systems.